Abstract

Nenn).

IPC Classes  ?

• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor

Abstract

A rotor blade mold and a method for manufacturing a rotor blade for a wind energy installation, wherein the rotor blade includes a blade root and a blade tip and wherein the rotor blade extends in a longitudinal direction from the blade root to the blade tip. The mold includes a first rotor blade mold segment adapted for manufacturing a portion of the rotor blade that includes the blade root, a second rotor blade mold segment adapted for manufacturing a portion of the rotor blade that includes the blade tip, and at least a third rotor blade mold segment adapted to be integrated in the rotor blade mold between the first mold segment and the second mold segment, and/or to be removed from the rotor blade mold and thereby lengthen or shorten the rotor blade mold in the longitudinal direction.

IPC Classes  ?

• B29C 33/30 - Mounting, exchanging or centering
• F03D 1/06 - Rotors

Abstract

A method of manufacturing a rotor blade component for a rotor blade of a wind energy installation, a rotor blade component, and a wind energy installation comprising such a rotor blade component. The method includes manufacturing a layer system including a first layer of a first material and a second layer of a second material. The second material has a smaller modulus of elasticity than the first material, and the second layer extends at least partially along the first layer. The layer system is beveled at least at one end with the aid of at least one separation process such that the second layer projects beyond the first layer at the at least one end of the layer system. The layer system is connected to at least one other such layer system so as to form the rotor blade component.

IPC Classes  ?

• F03D 1/06 - Rotors
• B29C 65/00 - Joining of preformed partsApparatus therefor
• B29D 99/00 - Subject matter not provided for in other groups of this subclass
• F03D 13/10 - Assembly of wind motorsArrangements for erecting wind motors
• B29L 31/08 - Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers

Abstract

A wind turbine having a support structure and a method for operating a wind turbine. The support structure includes a structural component and a reinforcing element. The structural component has fastening holes provided for fastening an operating means. The wind turbine can be operated in at least two states. In an operating state, the reinforcing element is screwed to the fastening portion of the structural component by screw connections which are preloaded in a defined manner using the fastening holes. In a maintenance state, the screw connections are released and the reinforcing element is removed from the structural component of the support structure. A maintenance device can be connected to the fastening portion of the structural component using the fastening holes provided for fastening a maintenance device.

IPC Classes  ?

• F03D 80/50 - Maintenance or repair
• F03D 13/10 - Assembly of wind motorsArrangements for erecting wind motors

Abstract

A wind turbine comprising a converter connected to a generator, which converter supplies at least some of the energy generated by the electrical generator into an electrical grid, sensors for interference in the electrical grid and a controller module for controlling the converter and/or the wind turbine. The controller module comprises a grid interference module which, in the case of detected interference in the electrical grid, counteracts the interference. The controller module comprises an override module which, in the case of a detected interference in the grid, is provided in order to deactivate the grid interference module at least in part. This improves the behavior in interference situations in that the controller module detects, over the course of the interference, that at least parts of the inherent grid stabilization functions do not counteract the interference and, in this specific situation, it deactivates the respective harmful grid stabilization functions.

IPC Classes  ?

• F03D 9/00 - Adaptations of wind motors for special useCombinations of wind motors with apparatus driven therebyWind motors specially adapted for installation in particular locations
• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
• F03D 9/25 - Wind motors characterised by the driven apparatus the apparatus being an electrical generator
• H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks
• H02J 3/50 - Controlling the sharing of the out-of-phase component

Abstract

A method of parameterizing a controller of a first wind energy installation wherein the controller sets a manipulated variable of the wind energy installation as a function of an input variable. An artificial intelligence determines at least one value of a parameter of the controller for at least one state/degree of being iced up of the wind energy installation based on a power curve, load, and/or downstream flow of the wind energy installation predicted with a mathematical model of the wind energy installation for at least one state/degree of being iced up, and/or determines at least one value of a parameter of the controller for at least one state/degree of being iced up of the wind energy installation, based on at least one determined state/degree of being iced up and a power, load, and/or downstream flow of the wind energy installation and/or at least one second wind energy installation.

IPC Classes  ?

• F03D 7/04 - Automatic controlRegulation
• F03D 80/40 - Ice detectionDe-icing means

Abstract

An arrangement comprising a regenerative energy generator and a store for electrical energy to be output to a grid, the regenerative energy generator including an energy converter for converting renewable energy sources into electrical energy and a power control unit which has an input for a target power output and controls the power generation by the regenerative energy converter, with a charge controller for the store also being provided, which sets a minimum operating reserve and outputs a signal for a target state of charge (SoC) of the store. In order to achieve improved utilization of the store, a correction unit is connected to the charge controller and continuously modifies the signal for the target state of charge (SoC). A sequence control unit is actuated by the correction unit and influences the power control unit of the regenerative energy generator according to an output value of the correction unit.

IPC Classes  ?

• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
• H02J 3/46 - Controlling the sharing of output between the generators, converters, or transformers
• H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks

Abstract

A rotor blade for a wind energy installation includes a blade root, a blade tip, and at least one rotor blade shell extending in a longitudinal direction from the blade root to the blade tip, and having an inner shell region and an outer shell region. The inner shell region includes a first fiber composite with at least two first fiber layers, and the outer shell region includes a second fiber composite with at least two second fiber layers. The first and second fiber layers extend substantially in the longitudinal direction. At least a first fiber layer of the first fiber composite terminates in the region of at least one end position in the longitudinal direction, whereas the remaining first fiber layers extend beyond the end position. At least a second fiber layer of the second fiber composite terminates in the region of the end position in the longitudinal direction, whereas the remaining second fiber layers extend beyond the end position.

IPC Classes  ?

• F03D 1/06 - Rotors

Abstract

The invention relates to a method for operating a wind turbine, to a wind turbine designed to carry out the method, and to a computer program product. The method for operating a wind turbine comprising a rotor with rotor blades that can be angularly adjusted via a turbine controller, in which a state variable that reflects the current thrust of the rotor is detected, has the following steps: a) ascertaining a short-term average value of the state variable; b) ascertaining the difference between the short-term average value of the state variable and the detected current state variable; c) ascertaining a first target blade angle correction value from the ascertained difference; and d) taking into consideration the target blade angle correction value while adjusting the blade angle by means of the turbine controller.

IPC Classes  ?

• F03D 7/00 - Controlling wind motors
• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
• F03D 7/04 - Automatic controlRegulation

Abstract

A device and a method for manufacturing a rotor blade for a wind energy installation, wherein the rotor blade includes at least two rotor blade shells which are bonded together, includes a holding device arranged to hold a rotor blade shell such that at least one bonding surface on the rotor blade shell and/or on a web attached to the rotor blade shell is exposed. The bonding surface of the rotor blade shell can be bonded to a further rotor blade shell. The device further includes a robot arm arranged to apply adhesive to the at least one bonding surface, a carriage on which the robot arm is mounted, and a guide device mounted on the holding device. The carriage is mounted on the guide device so as to be movable. The guide device is arranged to guide the carriage and the robot arm along the holding device, in particular along the bonding surface.

IPC Classes  ?

• F01D 1/06 - Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor traversed by the working-fluid substantially radially
• F03D 1/06 - Rotors
• B05C 13/02 - Means for manipulating or holding work, e.g. for separate articles for particular articles
• B29C 65/00 - Joining of preformed partsApparatus therefor
• B29L 31/08 - Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers

Abstract

A method of operating a wind energy installation wherein a rotor has a first rotor blade which can be angularly adjusted, a first adjustment drive for adjusting the rotor blade, and a safety control system. In a normal mode of operation, the first adjustment drive is supplied with energy from a source and is controlled by a first pitch control system. In a failure mode of operation, the supply of energy to the first adjustment drive is switched from the source to an energy storage device and the safety control system monitors a position and/or movement of the first rotor blade. The first rotor blade is adjusted by the first adjustment drive in a direction of a predetermined stopping position, while the safety control system, as a function of the monitored position and/or movement, enables or effects a deactivation of a first power supply shut-off device. In the failure mode of operation, the safety control system, as a function of the monitored position and/or movement, closes a first pitch brake and activates a first blocking mode in which the supply of energy to the first adjustment drive from the energy storage device and/or an opening of the first pitch brake is prevented.

IPC Classes  ?

• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor

Abstract

A method of operating a wind energy installation having a rotor with at least one rotor blade that is angularly adjustable by an adjustment drive. In response to the occurrence of at least one special operating case, in particular at least one malfunction case, the rotor blade is adjusted in a direction of a shutdown position by the adjustment drive. In the shutdown position, a supply of energy from an energy storage device to the adjustment drive is switched off and/or a pitch brake for holding the rotor blade in its current position is closed. In response to at least one activation signal, the rotor blade is adjusted by the adjustment drive in an adjustment mode of operation while the special operating case is still ongoing, in particular while the malfunction case is still ongoing.

IPC Classes  ?

• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor

Abstract

The invention relates to a method for accessing SCADA data of a wind turbine in a protected manner and to an assembly designed to carry out said method. The SCADA data together with master data of the wind turbine is transmitted to a broker server in a digitally signed form, said broker server generating a metadata set on the basis of said data and transmitting the metadata set to user clients. If the user client is interested in the SCADA data, the user client transmits the metadata set back to the broker server in a digitally signed form. The broker server responds with a likewise digitally signed delivery data set comprising the metadata set signed by the user client and the SCADA and master data belonging to the metadata set.

IPC Classes  ?

• F03D 7/04 - Automatic controlRegulation
• F03D 17/00 - Monitoring or testing of wind motors, e.g. diagnostics
• H04L 9/32 - Arrangements for secret or secure communicationsNetwork security protocols including means for verifying the identity or authority of a user of the system
• H04L 67/562 - Brokering proxy services
• G06Q 50/06 - Energy or water supply
• H04L 9/00 - Arrangements for secret or secure communicationsNetwork security protocols

Abstract

A method for producing a component of a rotor blade, by providing a production mould (2) with a curved support surface (1), at least one flexible pultrudate (4) being laid onto the support surface (1), the at least one flexible pultrudate (4) being covered with a vacuum film (6), a vacuum being generated and the at least one flexible pultrudate (4) being pressed entirely onto the curved support surface (1) of the production mould (2) by the vacuum.

IPC Classes  ?

• B29C 70/34 - Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or coreShaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression
• B29C 70/44 - Shaping or impregnating by compression for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
• B29D 99/00 - Subject matter not provided for in other groups of this subclass
• F03D 1/06 - Rotors

Abstract

The invention relates to an assembly method for a vibration damper of a tower of a wind power plant, in which the vibration damper is switched into a transport state from a state of use. The vibration damper is connected to a structural component of the tower such that a damper mass of the vibration damper can be set in motion, during which movement the distance between the damper mass and a central axis of the tower varies. The vibration damper is switched into the transport state by tilting the vibration damper compared to the state of use. The invention also relates to an associated assembly system.

IPC Classes  ?

• F03D 13/10 - Assembly of wind motorsArrangements for erecting wind motors
• F03D 13/20 - Arrangements for mounting or supporting wind motorsMasts or towers for wind motors
• F03D 13/40 - Arrangements or methods specially adapted for transporting wind motor components
• F16F 15/131 - Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon the rotating system comprising two or more gyratory masses

Abstract

The method according to the invention for operating a wind turbine, comprising a tower and a rotor arranged at the top of the tower and having at least one rotor blade, which can be adjusted about a blade setting axis, has a first operating mode in which the at least one rotor blade has an operating angular position about the blade setting axis and a wind-force-dependent rotation of the rotor is converted into electrical power using a generator unit, which power is delivered from the wind turbine into an electrical network and/or stored, and a second operating mode in which the at least one rotor blade is adjusted by at least 60° and/or max. 110° about the blade setting axis relative to the operating angular position into a damping angular position, and a counter torque braking the rotor is controlled based on a vibration of the tower.

IPC Classes  ?

• F03D 9/00 - Adaptations of wind motors for special useCombinations of wind motors with apparatus driven therebyWind motors specially adapted for installation in particular locations
• H02P 9/04 - Control effected upon non-electric prime mover and dependent upon electric output value of the generator
• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
• F03D 9/11 - Combinations of wind motors with apparatus storing energy storing electrical energy
• F03D 9/25 - Wind motors characterised by the driven apparatus the apparatus being an electrical generator
• H02P 9/00 - Arrangements for controlling electric generators for the purpose of obtaining a desired output
• H02P 101/15 - Special adaptation of control arrangements for generators for wind-driven turbines

Abstract

A condition monitoring system and method for electrical power components, in particular a transformer. A partial discharge detector unit captures acoustic signals of the partial discharge by means of an A-sensor. A processing unit captures a frequency of the partial discharges detected by the A-type sensor and a histogram module determines a temporal profile of the frequency from the frequency signal and a time signal. An analysis unit monitors the temporal profile for a fall and/or rise, preferably by means of pattern recognition. A warning signal is triggered if an adjustable threshold is exceeded. An imminent failure of an electrical power component can therefore be detected in good time and warned of; the component can be automatically disconnected if appropriate.

IPC Classes  ?

• G01R 31/12 - Testing dielectric strength or breakdown voltage
• F03D 17/00 - Monitoring or testing of wind motors, e.g. diagnostics
• F03D 80/50 - Maintenance or repair
• G01R 31/62 - Testing of transformers
• G08B 21/18 - Status alarms

Abstract

The invention relates to a method for operating a wind turbine or a plurality of wind turbines combined in a wind farm, to a control unit designed for carrying out the method and to a corresponding computer program product. For the method the wind turbine or the wind farm has a control unit connected to a remote-access data transmission network for controlling the power supply to the wind turbine(s). The control unit is designed for receiving control signals of at least two higher-level controls with different priorities, and stored in the control unit is a schedule of whether, and for which of the higher-level controls, the control unit is reserved for converting control signals at a point in time, the received control signals being converted or discarded as a function of the timetable and the priority of the respective transmitting higher-level control.

IPC Classes  ?

• H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks
• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
• H02J 13/00 - Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the networkCircuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
• F03D 7/04 - Automatic controlRegulation
• H02J 3/46 - Controlling the sharing of output between the generators, converters, or transformers

Abstract

A management system for controlling a wind turbine according to prescribed rules and a safety system, separate from the management system, for monitoring the wind turbine on the basis of operational characteristic values, wherein the safety system transfers the wind turbine to a safe plant state independently of the management system if safety-critical operational characteristic values violate safety parameters stored in the safety system, in order to change at least one safety parameter stored in the safety system a parameter block comprising the at least one safety parameter and at least two safety features is supplied to the safety system and accepted by the safety system only after a positive check on the safety features, wherein the check on at least one of the safety features requires comparison against check information available directly on the wind turbine.

IPC Classes  ?

• F03D 7/04 - Automatic controlRegulation
• F03D 17/00 - Monitoring or testing of wind motors, e.g. diagnostics
• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
• G05B 23/02 - Electric testing or monitoring

Abstract

A method and a system for calibrating a wind vane of a wind turbine, a method for monitoring a wind turbine, and a method for operating a wind turbine are provided. The method comprises: measuring first and second wind speeds with anemometers and a wind direction with a wind vane, a multiplicity of measurement values being recorded over a defined time period; determining differences between the first and second wind speeds; determining a model function for a relationship between measured wind directions and determined differences, at least one first model function being determined for a first wind-speed bin and at least one second model function being determined for a second wind-speed bin; determining at least one intersection point value of the measured wind direction where the first model function and the second model function intersect; and outputting the intersection point value as an installation angle of the wind vane.

IPC Classes  ?

• F03D 17/00 - Monitoring or testing of wind motors, e.g. diagnostics
• G01P 13/02 - Indicating direction only, e.g. by weather vane
• G01P 21/00 - Testing or calibrating of apparatus or devices covered by the other groups of this subclass
• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor

Abstract

A method for determining a correction function for a wind turbine, a method and system for determining an alignment correction function for a nacelle of a wind turbine, and a method for operating a wind turbine are provided. Measurement values of the power measure of the wind turbine and of the leeward wind direction are assigned to measurement values of the leeward wind speed, corrected by a correction function, and are grouped into at least one wind-speed bin on the basis of instants at which the measurement values were recorded. A model function is determined and outputted for a relationship between the power measure and the leeward wind direction for the wind-speed bin, and an alignment correction function is determined for a target alignment of the nacelle relative to the measured leeward wind direction on the basis of the model function.

IPC Classes  ?

• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
• F03D 7/04 - Automatic controlRegulation

Abstract

A mainframe mounts the drivetrain of a wind turbine, and to an arrangement comprising such a mainframe, and to a wind turbine having a corresponding arrangement. For the purpose of mounting the drivetrain of a wind turbine, the mainframe is realized with two bearing points that are spaced apart from each other, a partial flange, having a fastening region shaped as a circular ring segment, being provided at at least one bearing point. The arrangement comprises, besides the mainframe, at least one ring element configured to radially encompass the drivetrain. At least one ring element is fastened to the fastening region, shaped as a circular ring segment, of a bearing point of the mainframe. In the case of the wind turbine, the drivetrain is mounted by means of the described arrangement.

IPC Classes  ?

• F03D 80/70 - Bearing or lubricating arrangements
• F03D 13/20 - Arrangements for mounting or supporting wind motorsMasts or towers for wind motors
• F03D 80/80 - Arrangement of components within nacelles or towers
• F03D 15/10 - Transmission of mechanical power using gearing not limited to rotary motion, e.g. with oscillating or reciprocating members
• F16H 57/025 - Support of gearboxes, e.g. torque arms, or attachment to other devices
• F16H 57/028 - GearboxesMounting gearing therein characterised by means for reducing vibration or noise

Abstract

A method for the maintenance of a first wind energy installation from a group of wind energy installations. In the method, a future maintenance time period is identified in which a boost power of the group of wind energy installations is greater than a prescribed threshold value, wherein the boost power results from a wind speed predicted for the future maintenance time period, said wind speed being greater than a rated wind speed. The power of the first wind energy installation is reduced after the start of the maintenance time period and a boost power is drawn from a plurality of wind energy installations from the group of wind energy installations. A maintenance process is carried out at the first wind energy installation. The invention furthermore relates to a control unit suitable for carrying out the method.

IPC Classes  ?

• F03D 80/50 - Maintenance or repair
• F03D 9/25 - Wind motors characterised by the driven apparatus the apparatus being an electrical generator
• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
• F03D 7/04 - Automatic controlRegulation
• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers

Abstract

A method for controlling a wind turbine with a wind rotor (2), a doubly-fed induction generator (1) driven therewith, and a converter (4), which is electrically connected to feed electrical energy into an electrical grid (8) with at least one grid parameter, and having a controller with a memory in which rotation rate parameters are stored, characterized in that at least one variable characteristic curve is determined between at least one of the rotation rate parameters and the at least one grid parameter, the at least one characteristic is stored in the memory, the at least one grid parameter is measured, the grid parameter measurements are fed to the controller, the values of the at least one rotation rate parameter associated with the grid parameter measurements via the at least one characteristic curve are activated.

IPC Classes  ?

• H02P 9/00 - Arrangements for controlling electric generators for the purpose of obtaining a desired output
• F03D 9/25 - Wind motors characterised by the driven apparatus the apparatus being an electrical generator
• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
• H02P 9/10 - Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load
• H02P 101/15 - Special adaptation of control arrangements for generators for wind-driven turbines

Abstract

A wind turbine has a drive train that comprises a rotor shaft and a planetary gear train having a first gear stage, the rotor shaft being connected to the planet carrier of the first gear stage in a fixed and backlash-free manner. The rotor shaft is supported, on the side that faces away from the first gear stage, by a toroidal roller bearing, on a first carrying structure. The planet carrier that is connected to the rotor shaft in a fixed and backlash-free manner is supported by a moment bearing, as a fixed bearing. The outer ring of the moment bearing is connected to a housing. The combination of the outer ring of the moment bearing and the housing is connected to a second carrying structure via at least three elastic suspension elements arranged in an annular manner around the rotor axis.

IPC Classes  ?

• F16H 57/08 - General details of gearing of gearings with members having orbital motion
• F16H 57/021 - Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
• F03D 15/00 - Transmission of mechanical power
• F03D 80/70 - Bearing or lubricating arrangements
• F16H 1/28 - Toothed gearings for conveying rotary motion with gears having orbital motion
• F16C 19/36 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
• F16H 57/02 - GearboxesMounting gearing therein
• F16C 17/00 - Sliding-contact bearings for exclusively rotary movement
• F16C 19/38 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
• F16C 19/54 - Systems consisting of a plurality of bearings with rolling friction

Abstract

A method for operating a plurality of wind turbines, in which a first current estimated wind value is derived from operating parameters of a first wind turbine, and in which a second current estimated wind value is derived from operating parameters of a second wind turbine. A prediction model is applied to derive, from the first current estimated wind value and the second current estimated wind value, a wind prediction, applicable to a future time point, for a third wind turbine. The wind prediction is processed in a controller, in order to generate a control signal for the third wind turbine that is effective before the future time point. The invention additionally relates to an associated control system. The loading for particular wind turbines can be reduced in that the wind conditions are predicted for a future time point.

IPC Classes  ?

• F03D 7/04 - Automatic controlRegulation
• F03D 1/00 - Wind motors with rotation axis substantially parallel to the air flow entering the rotor
• G05B 13/04 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators

Abstract

A method for operating a first wind turbine and a second wind turbine, the second wind turbine being located in the wake of the first wind turbine. A prediction model is fed with a current wind value of the first wind turbine, in order to predict a future time point at which the area swept by the rotor of the second wind turbine becomes partially overlapped by the wake of the first wind turbine. The second wind turbine reacts to the prediction in that a control signal is generated in order to alter the pitch angle of a rotor blade of the second wind turbine relative to the pitch angle of another rotor blade of the second wind turbine. The invention additionally relates to a control system suitable for executing the method. Implementation of the disclosed method by a control system can reduce the loading of the second wind turbine.

IPC Classes  ?

• G05B 13/04 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
• F03D 7/04 - Automatic controlRegulation
• F03D 1/00 - Wind motors with rotation axis substantially parallel to the air flow entering the rotor
• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor

Abstract

Apparatus for storing, tapering, cutting and dispensing preform layers of material includes a device for storing coiled lengths of the preform layers of material and a mechanism for receiving coiled lengths of the preform layers of material. The mechanism includes a grinding mechanism to grind portions of the preform layers of material and a cutter to cut the grinded portions of material. A programmable controller is configured to control the operations of at least one of the device and mechanism.

IPC Classes  ?

• B23P 15/04 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass turbine or like blades from several pieces
• F03D 80/00 - Details, components or accessories not provided for in groups
• B29C 70/02 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising combinations of reinforcements and fillers incorporated in matrix material, forming one or more layers, with or without non-reinforced or non-filled layers
• B29B 11/16 - Making preforms characterised by structure or composition comprising fillers or reinforcements
• B29D 99/00 - Subject matter not provided for in other groups of this subclass
• B29C 70/08 - Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, with or without non-reinforced layers
• F03D 1/06 - Rotors
• B29C 70/54 - Component parts, details or accessoriesAuxiliary operations
• B29L 31/08 - Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers

Abstract

The invention relates to a system and a method for monitoring a flange connection of a wind turbine, and to a corresponding wind turbine. According to the invention, one or more monitoring bodies (90) are mounted on one or more bolt nuts (20) and/or bolt heads of at least one flange connection of a wind turbine, and a circuit of the monitoring bodies (90) is produced with connecting cables (100) such that, upon rotation of a slackening bolt nut (20) or of a bolt head of a slackening bolt and of the monitoring body (90) mounted thereon, at least one connecting cable (100) connected to the concomitantly rotating monitoring body (90) becomes detached, owing to increasing tensile stress on the connecting cable (100), a fault in the flange connection being signaled upon slackening of a bolt nut (20) or bolt.

IPC Classes  ?

• G01M 5/00 - Investigating the elasticity of structures, e.g. deflection of bridges or aircraft wings
• F03D 17/00 - Monitoring or testing of wind motors, e.g. diagnostics
• F03D 1/06 - Rotors

Abstract

Method for retrofitting a lightning protection device of a rotor blade of a wind turbine. In the method, a cable section of a lightning protection cable is stripped of insulation. A connection piece and a lightning protection receptor are fitted to the cable section which is stripped of insulation, so that the lightning protection receptor is electrically coupled to the lightning protection cable. The invention also relates to a rotor blade which is retrofitted using the method. The risk of lightning strikes in specific regions of a rotor blade can be reduced by the invention by means of the retrofitting operation.

IPC Classes  ?

• F03D 80/30 - Lightning protection

Abstract

target) on the basis of the requisite controlling capacity and the dynamic security margin. Statistical uncertainty is determined and the target value is then dynamically offset such that a corresponding buffer margin (security margin) is generated: large in the event of high uncertainty, low in the event of low uncertainty. Under consistent wind conditions, the security margin is significantly narrower, thus resulting in a larger target value.

IPC Classes  ?

• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
• F03D 9/25 - Wind motors characterised by the driven apparatus the apparatus being an electrical generator
• G05B 19/04 - Programme control other than numerical control, i.e. in sequence controllers or logic controllers

Abstract

A method for operating a wind farm in a reduced-power throttle mode in which a farm master determines an individual setpoint power reduction for each participating wind power plant by determining an available power for each wind power plant, reducing this available power by a reduction proportion; determining the reduction proportions using an optimization method with the optimization condition of equal increase time for the wind power plants; and repeating until the optimization method reaches a presettable termination criterion.

IPC Classes  ?

• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
• F03D 7/04 - Automatic controlRegulation
• G05B 13/02 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric

Abstract

A nacelle component for a nacelle of a wind turbine, comprising a mainframe module and a power electronics module. The mainframe module and the power electronics module in each case have a length greater than a width. In the assembled state of the nacelle component, the mainframe module is oriented with its longitudinal axis parallel to a vertical plane which extends through the axis of a rotor shaft. The longitudinal axis of the power electronics module intersects the vertical plane which extends through the axis of the rotor shaft. A method for mounting such a nacelle component is also disclosed.

IPC Classes  ?

• F03D 80/80 - Arrangement of components within nacelles or towers
• F03D 13/10 - Assembly of wind motorsArrangements for erecting wind motors
• F03D 9/25 - Wind motors characterised by the driven apparatus the apparatus being an electrical generator
• F03D 13/20 - Arrangements for mounting or supporting wind motorsMasts or towers for wind motors
• F03D 80/50 - Maintenance or repair
• F03D 80/00 - Details, components or accessories not provided for in groups

Abstract

An enclosure for a nacelle of a wind turbine is connected to a substructure in a manner that allows the enclosure to move relative to the substructure. An imaginary straight line extends over the panel and is aligned with an edge of the panel. The imaginary straight line defines a first sub-portion of the panel, said first sub-portion comprising the edge. The first sub-portion butts against the substructure. The first sub-portion is retained against the substructure by a tension element acting in a direction of tension. The first sub-portion can be displaced relative to the substructure in a direction which intersects the direction of tension. The invention facilitates the operation of assembling the enclosure.

IPC Classes  ?

• F03D 13/10 - Assembly of wind motorsArrangements for erecting wind motors
• F03D 80/30 - Lightning protection
• F03D 80/80 - Arrangement of components within nacelles or towers
• F03D 1/00 - Wind motors with rotation axis substantially parallel to the air flow entering the rotor
• F03D 80/70 - Bearing or lubricating arrangements

Abstract

A blade adapter for rotor blades of wind turbines, for increasing the rotor diameter, has a first end for attaching to the rotor hub, and a second end, spaced apart in the axial direction, for connecting to the blade root of a rotor blade. In addition, the blade adapter, at its first and second end, has a pitch circle for connecting to the rotor hub or to the rotor blade, wherein the wall of the blade adapter extending in the axial direction is open outwardly, in the form of a truncated cone, from the first end toward the second end, in at least one portion.

IPC Classes  ?

• F03D 80/10 - Arrangements for warning air traffic
• F03D 1/06 - Rotors
• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
• F03D 80/70 - Bearing or lubricating arrangements

Abstract

A wind turbine includes a wind rotor, a generator, and a converter. The generated electric power is fed from the converter by means of a feed to a turbine transformer for delivery to a grid. The feed is designed as a double branch including a power-branched power circuit breaker unit having a first feed line and a second feed line connected in parallel, wherein a separate low-voltage winding of the turbine transformer and a separate power circuit breaker at the connector of the converter is associated with each feed line.

IPC Classes  ?

• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
• F03D 80/80 - Arrangement of components within nacelles or towers
• F03D 9/25 - Wind motors characterised by the driven apparatus the apparatus being an electrical generator
• H02P 9/10 - Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load
• H02P 101/15 - Special adaptation of control arrangements for generators for wind-driven turbines

Abstract

set). The wind turbine according to the invention makes it possible to reduce a drop in power following requested additional power. The invention additionally comprises a corresponding method for operating a wind turbine.

IPC Classes  ?

• F03D 7/04 - Automatic controlRegulation
• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
• F03D 9/25 - Wind motors characterised by the driven apparatus the apparatus being an electrical generator

Abstract

A method for operating a wind turbine, the method including, in response to receiving a request for a system start of the wind turbine, monitoring at least one measured value over a predetermined monitoring period; and effecting the system start in response to determining that the at least one measured value in the monitoring period corresponds to defined specifications, wherein: the at least one measured value is stored continuously in a data storage and a storage period in the data storage corresponds to at least the predetermined monitoring period, and monitoring the at least one measured value in response to receiving the request for the system start comprises checking, on the basis of the data storage, whether the at least one measured value in a storage period corresponding to the monitoring period before the request corresponds to the defined specifications.

IPC Classes  ?

• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
• F03D 7/04 - Automatic controlRegulation

Abstract

An adapter device for the horizontal preassembly of a wind turbine rotor includes a connection piece on the underside of the adapter device for fastening the adapter device to a tower system of a tower crane, and a rotor flange on the top side of the adapter device for fastening the rotor hub of the wind turbine rotor to be assembled.

IPC Classes  ?

• F03D 13/10 - Assembly of wind motorsArrangements for erecting wind motors
• F03D 1/06 - Rotors
• F03D 13/20 - Arrangements for mounting or supporting wind motorsMasts or towers for wind motors
• E02D 27/42 - Foundations for poles, masts, or chimneys
• E04H 12/34 - Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the like

Abstract

Structural preform layers of multiple rigid unidirectional strength elements or rods are constructed and arranged for use in fabricating load-bearing support structures and reinforcements of wind turbine blades. Individual preform layers include multiple elongate unidirectional strength elements or rods arranged in a single layer along a longitudinal axis of the preform layer. Each preform layer includes one or more fibrous carrier layers to which the multiple strength elements or rods are joined and arranged in the single layer. Each strength element or rod is longitudinally oriented and adjacent to other elements or rods. Individual strength elements or rods include a mass of substantially straight unidirectional structural fibers embedded within a matrix resin such that the elements or rods have a substantially uniform distribution of fibers and high degree of fiber collimation. The relative straightness of the fibers and fiber collimation provide strength elements or rods and the preform layers with high rigidity and significant compression strength.

IPC Classes  ?

• F04D 29/38 - Blades
• F03D 1/06 - Rotors
• B29B 11/16 - Making preforms characterised by structure or composition comprising fillers or reinforcements
• B29C 70/02 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising combinations of reinforcements and fillers incorporated in matrix material, forming one or more layers, with or without non-reinforced or non-filled layers
• B29C 70/08 - Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, with or without non-reinforced layers
• B29D 99/00 - Subject matter not provided for in other groups of this subclass
• F03D 80/00 - Details, components or accessories not provided for in groups
• F03D 9/25 - Wind motors characterised by the driven apparatus the apparatus being an electrical generator
• B29L 31/08 - Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers

Abstract

A method for installing tower fittings by introducing at least two separate supply modules into a wind turbine tower, wherein a separate supply module structurally includes one segment each of at least two system components of the wind turbine tower, and wherein an upper segment end is arranged on an upper edge, and a lower segment end on a lower edge, of the supply module, including: arranging the upper edge of a first separate supply module at an upper end of the wind turbine tower; connecting an upper segment end of the first separate supply module to a lower segment end of a corresponding system component of a second separate supply module; and arranging the upper edge of the second separate supply module at the upper end of the wind turbine tower.

IPC Classes  ?

• E04H 12/34 - Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the like
• E04H 12/08 - Structures made of specified materials of metal
• E04H 12/12 - Structures made of specified materials of concrete or other stone-like material, with or without internal or external reinforcement, e.g. with metal coverings, with permanent form elements
• F03D 80/80 - Arrangement of components within nacelles or towers
• F03D 13/10 - Assembly of wind motorsArrangements for erecting wind motors

Abstract

The invention relates to a load-handling means for a tower or a tower section of a wind turbine, which load-handling means has tower-attachment means for attachment to an upper end or in the region of an upper end of a tower or a tower section of a wind turbine, and attachment points for attaching at least one anchoring means of a lifting gear unit. The invention also relates to a method for erecting a wind turbine, in particular an offshore wind turbine. The load-handling means according to the invention includes at least one oscillation damper, or at least one oscillation damper is attached, in particular releasably and/or exchangeably, to the load-handling means, the damping frequency of which oscillation damper lies in the region of a natural frequency of a clamped or freestanding tower or tower section without a gondola.

IPC Classes  ?

• B66C 1/10 - Load-engaging elements or devices attached to lifting, lowering, or hauling gear of cranes, or adapted for connection therewith for transmitting forces to articles or groups of articles by mechanical means
• F16F 7/10 - Vibration-dampersShock-absorbers using inertia effect
• F03D 80/00 - Details, components or accessories not provided for in groups
• F03D 13/20 - Arrangements for mounting or supporting wind motorsMasts or towers for wind motors
• F03D 13/10 - Assembly of wind motorsArrangements for erecting wind motors
• E04B 1/98 - Protection against other undesired influences or dangers against vibrations or shocksProtection against other undesired influences or dangers against mechanical destruction, e.g. by air-raids
• E04H 12/34 - Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the like
• F16F 15/02 - Suppression of vibrations of non-rotating, e.g. reciprocating, systemsSuppression of vibrations of rotating systems by use of members not moving with the rotating system
• F03D 13/40 - Arrangements or methods specially adapted for transporting wind motor components

Abstract

A composite beam for a wind turbine blade includes a preform layer, the preform layer including multiple elongate strength rods arranged longitudinally relative to one another in a single layer, each strength rod being disposed adjacent to and spaced from at least one adjacent strength rod. Each strength rod has a rectangular cross section and includes multiple, substantially straight collimated structural fibers fixed in a solidified matrix resin. The preform layer includes at least one carrier layer to which the multiple strength rods are joined by an adhesive. The carrier layer spaces adjacent strength rods a fixed distance apart to facilitate the flow of liquid bonding resin between adjacent strength rods of the preform layer to its joined carrier layer, the carrier layer being of a permeable material suitable to facilitate the flow of liquid bonding resin through the carrier layer.

IPC Classes  ?

• F04D 29/38 - Blades
• F03D 1/06 - Rotors
• B29B 11/16 - Making preforms characterised by structure or composition comprising fillers or reinforcements
• B29C 70/02 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising combinations of reinforcements and fillers incorporated in matrix material, forming one or more layers, with or without non-reinforced or non-filled layers
• B29C 70/08 - Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, with or without non-reinforced layers
• B29D 99/00 - Subject matter not provided for in other groups of this subclass
• F03D 80/00 - Details, components or accessories not provided for in groups
• F03D 9/25 - Wind motors characterised by the driven apparatus the apparatus being an electrical generator
• B29L 31/08 - Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers

Abstract

The invention relates to a rotor-blade extension body for use with a rotor blade of a rotor of a wind turbine. The rotor-blade extension body is elongate and is realized, for example, as a steel tube segment. There is a lift-generating element mounted on the circumference of the rotor-blade extension body.

IPC Classes  ?

• F03D 1/06 - Rotors

Abstract

A method for controlling a wind turbine which is connected to an electrical grid, detects a grid frequency present in the grid and in the case of which the power output is regulated on the basis of the grid frequency by a controller and, in particular, switches off the power feed into the electrical grid if a limit value of a grid frequency is exceeded, wherein a change in the grid frequency over time is detected, a rate of change is determined and the rate of change is compared with a rate of change limit value and a modified frequency value is used to regulate the power output in the event of the rate of change limit value being exceeded.

IPC Classes  ?

• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
• F03D 9/25 - Wind motors characterised by the driven apparatus the apparatus being an electrical generator

Abstract

The invention relates to a method and a system for monitoring an individual blade adjustment of a wind turbine which includes a tower, a rotor which is arranged on the tower and has at least two rotor blades whose blade angle can be adjusted individually, and a blade adjustment system, wherein the blade adjustment system includes a blade controller and sensors for sensing individual actual blade angles of the at least two rotor blades, wherein an individual blade controller is included which receives a collective set point blade angle from the blade controller and which actuates at least two rotor blades with respectively individual set point blade angles, as well as a corresponding wind turbine.

IPC Classes  ?

• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
• F03D 17/00 - Monitoring or testing of wind motors, e.g. diagnostics

Abstract

A method for anchoring a foundation structure (3) in a seabed (1) that includes introducing a receiving structure (6) into the seabed, lowering a support post (5) of the foundation structure (3) into the receiving structure (6), producing a connection between the receiving structure (6) and foundation structure (3) by filling the receiving structure (6) with a curable filling compound (7), and curing the curable filling compound (7), wherein the support post (5) is fixed in the receiving structure (6) prior to filling the receiving structure (6) with the curable filling compound (7). Also disclosed is a foundation structure (3) for an offshore wind turbine, for anchoring in a seabed (1), which includes at least one support post (5) to be introduced into a receiving structure (6), which has fixing elements (11, 20) for temporarily fixing in the receiving structure (6) before grouting is carried out.

IPC Classes  ?

• E02D 27/42 - Foundations for poles, masts, or chimneys
• E02B 17/00 - Artificial islands mounted on piles or like supports, e.g. platforms on raisable legsConstruction methods therefor
• E02D 5/34 - Concrete or concrete-like piles cast in position
• E02D 27/12 - Pile foundations
• E02D 27/32 - Foundations for special purposes

Abstract

A rotor blade (5) of a wind turbine, which has a profile (1-4) having an upper side (suction side) (7) and an underside (pressure side) (8). The profile (1-4) includes a camber line (21, 25) and a chord (18) between a leading edge (10) and a trailing edge (11) of the profile (1-4). The profile (1-4) has a relative profile thickness of more than 45%. At least one vortex generator (50, 50′, 50″, 50′″) is disposed, in the region of the profile (1-4), on the suction side (7) of the rotor blade (5). The profile (1-4) is provided with a blunt trailing edge. And, The thickness of the trailing edge is between 15% and 70% of the chord length.

IPC Classes  ?

• F03D 1/06 - Rotors

Abstract

A wind farm comprises a plurality of wind turbines connected to a network internal to the wind farm, a network feed-in point in the network internal to the wind farm for feeding electrical power into a supply network, a control device associated with the network feed-in point designed to control the wind turbines feeding power into the supply network by the network feed-in point on the basis of measured values recorded at the network feed-in point, and at least one additional network feed-in point having an additional control device designed to control the wind turbines feeding power into the supply network by the additional network feed-in point on the basis of measured values recorded at the additional network feed-in point, wherein the network internal to the wind farm is designed to variably connect at least one wind turbine to one of the plurality of network feed-in points.

IPC Classes  ?

• G06F 19/00 - Digital computing or data processing equipment or methods, specially adapted for specific applications (specially adapted for specific functions G06F 17/00;data processing systems or methods specially adapted for administrative, commercial, financial, managerial, supervisory or forecasting purposes G06Q;healthcare informatics G16H)
• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
• F03D 7/04 - Automatic controlRegulation
• F03D 9/25 - Wind motors characterised by the driven apparatus the apparatus being an electrical generator
• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers

Abstract

A method for monitoring the operation of a wind energy plant having at least one blade angle adjustable rotor blade. Rotor blade vibrations are registered during operation by at least one measuring device, and at least one current natural frequency is established from the registered vibrations. At least one environmental parameter and/or at least one operational parameter, which influence the natural frequency of the rotor blade, is or are additionally registered. At least one natural frequency expected value dependent on the additionally registered parameter(s) and at least one confidence interval are calculated for the at least one established current natural frequency of the rotor blade, and whether the established current natural frequency lies within, or outside of, the confidence interval around the natural frequency expected value is monitored. Also disclosed is an operational control apparatus of a wind energy plant and a corresponding wind energy plant.

IPC Classes  ?

• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
• F03D 7/04 - Automatic controlRegulation
• F03D 17/00 - Monitoring or testing of wind motors, e.g. diagnostics
• F03D 80/40 - Ice detectionDe-icing means

Abstract

A wind turbine comprises a wind rotor, a generator driven by the wind rotor, a converter, wherein the generator and the converter generate electrical energy output via a connecting line with an inductively acting line reactor to a grid, and an overvoltage protection device comprising a plurality of different active modules, which are designed in such a way that they each effect, in different ways, a reduction in the voltage at the output of the converter, a switching matrix, which connects and disconnects the different active modules, and a selector comprising an overvoltage classifier, which is designed to select a predetermined stage depending on the overvoltage and to actuate the switching matrix in such a way that successive ones of the active modules are disconnected, wherein the overvoltage classifier defines a plurality of overvoltage ranges by virtue of in each case the selector setting different switching groups.

IPC Classes  ?

• F03D 9/00 - Adaptations of wind motors for special useCombinations of wind motors with apparatus driven therebyWind motors specially adapted for installation in particular locations
• H02P 9/04 - Control effected upon non-electric prime mover and dependent upon electric output value of the generator
• H02P 9/02 - Arrangements for controlling electric generators for the purpose of obtaining a desired output Details
• H02M 1/32 - Means for protecting converters other than by automatic disconnection
• H02H 7/12 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for convertersEmergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for rectifiers for static converters or rectifiers
• H02J 3/18 - Arrangements for adjusting, eliminating or compensating reactive power in networks
• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
• H02M 5/458 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters using discharge tubes or semiconductor devices to convert the intermediate DC into AC using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
• H02M 1/00 - Details of apparatus for conversion

Abstract

A method for adjusting the azimuth of a wind power plant, in which, during an azimuthal rotation of a machine housing with a rotor on a tower of the wind power plant, a constant residual pressure for generating a constant residual holding torque is applied to at least one azimuth braking device. Also an azimuth adjustment system for a wind power plant and to a wind power plant. In the disclosed method, the constant residual pressure and/or the constant residual holding torque are/is set as a function of at least one wind speed parameter before commencement of the azimuthal rotation, and the residual pressure and/or the residual holding torque are/is not changed during the azimuthal rotation, in particular during energization of azimuth drive motors.

IPC Classes  ?

• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
• F03D 80/00 - Details, components or accessories not provided for in groups
• F03D 9/25 - Wind motors characterised by the driven apparatus the apparatus being an electrical generator

Abstract

A composite structure for a pile foundation for anchoring a tower structure (e.g., an offshore wind turbine) in ground, which includes a hollow pile introduced into the ground at an erection site of the tower structure and a corner post which is connected to the tower structure and which, on a connection side, is arranged within the pile. The pile and the corner post are fixedly bonded to one another in a bonding region by a cured bonding material. At least one bonding means for transmitting shear forces is fixedly arranged on the pile and/or on the corner post in the bonding region. The bonding means has at least one aperture which is filled with the bonding material or, together with the corner post or pile, forms the aperture that is filled with the bonding material. The aperture encloses the bonding material by an angular range of 90° or more.

IPC Classes  ?

• E02D 27/42 - Foundations for poles, masts, or chimneys
• E02D 5/48 - Piles varying in construction along their length
• E02D 5/52 - Piles composed of separable parts, e.g. telescopic tubes
• E02D 27/12 - Pile foundations

Abstract

The invention relates to a turn drive for a wind turbine. The turn drive comprises a shaft, a hydraulic motor for driving the shaft, and a drive line for supplying a pressurized hydraulic fluid to the hydraulic motor. According to the invention, the drive line is provided with a settable pressure-limiting valve. The invention additionally relates to an associated method for rotating the rotor shaft of the wind turbine. By means of the method according to the invention and the turn drive, the rotor blades can be mounted individually on the hub of the rotor, without the gearbox of the wind turbine becoming overloaded.

IPC Classes  ?

• F16D 31/02 - Fluid couplings or clutches with pumping sets of the volumetric type, i.e. in the case of liquid passing a predetermined volume per revolution using pumps with pistons or plungers working in cylinders
• F15B 15/18 - Combined units comprising both motor and pump
• F15B 15/02 - Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
• F15B 15/26 - Locking mechanisms
• F03D 13/10 - Assembly of wind motorsArrangements for erecting wind motors

Abstract

A wind turbine diagnostic device for diagnosing mechanical damage to generator components of at least one wind turbine, comprising at least one speed sensor for determining a variation over time of the rotational speed of a generator of a wind turbine, the speed sensor having at least one speed signal output for outputting the determined variation over time of the rotational speed, a frequency analysis module and a frequency spectrum signal output for outputting a frequency spectrum, the frequency analysis module determining a frequency spectrum from the determined variation over time of the rotational speed, and a comparator element for comparing a frequency spectrum with a prescribed standard frequency spectrum and for diagnosing mechanical damage to generator components on the basis of the comparison. This increases the possibility of predicting mechanical damage to generator components caused by vibrations.

IPC Classes  ?

• F01D 21/00 - Shutting-down of machines or engines, e.g. in emergencyRegulating, controlling, or safety means not otherwise provided for
• F03D 7/04 - Automatic controlRegulation
• F01D 15/10 - Adaptations for driving, or combinations with, electric generators
• G01P 3/00 - Measuring linear or angular speedMeasuring differences of linear or angular speeds
• F03D 17/00 - Monitoring or testing of wind motors, e.g. diagnostics
• F03D 9/25 - Wind motors characterised by the driven apparatus the apparatus being an electrical generator

Abstract

A method for operating a wind energy installation having a tower, a nacelle arranged on the tower, the azimuth of which can be adjusted, and a rotor having at least one rotor blade, the blade angle of which can be adjusted, in which tower oscillations are detected and monitored during operation using at least one measuring apparatus and power operation is switched off if a sliding average of the tower oscillations exceeds a tower oscillation limit value. The tower oscillation limit value is defined, at least during load operation of the wind energy installation, as at least one limit value function which is dependent on a sliding average of prevailing wind speed and/or a parameter associated therewith, and has different functional dependencies in a plurality of different value ranges of the prevailing wind speed or the parameter associated therewith. The invention also relates to a wind energy installation.

IPC Classes  ?

• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
• F03D 1/06 - Rotors
• F03D 17/00 - Monitoring or testing of wind motors, e.g. diagnostics
• F03D 13/20 - Arrangements for mounting or supporting wind motorsMasts or towers for wind motors
• F03D 9/25 - Wind motors characterised by the driven apparatus the apparatus being an electrical generator

Abstract

The invention relates to a system and to a method for producing a rotor-blade spar cap with pultruded rods made of a fiber-reinforced material. According to the invention, the system includes at least one retaining apparatus for rotatably mounting at least one rod-layer roll with a rolled-up layer of pultruded rods arranged one beside the other, and a laminating mold for receiving layers of pultruded rods. The system further includes at least one guiding apparatus and additionally at least one trimming apparatus. The guiding apparatus is designed to guide onto the laminating mold a layer of pultruded rods which has been unrolled from a rod-layer roll. And, the trimming apparatus, for trimming the layers of pultruded rods, has a sawing apparatus and/or a milling apparatus.

IPC Classes  ?

• B32B 38/18 - Handling of layers or the laminate
• B29D 99/00 - Subject matter not provided for in other groups of this subclass
• B32B 38/00 - Ancillary operations in connection with laminating processes
• B29C 70/52 - Pultrusion, i.e. forming and compressing by continuously pulling through a die

Abstract

An apparatus and method for producing a rotor blade spar cap for a rotor blade of a wind turbine. The apparatus includes a mold, which has a cavity-like depression in cross section, in which material for a rotor blade spar cap can be placed, and a sheet-like mold covering for sealing off the depression. The depression has side walls, an opening bounded by the side walls and a base area between the side walls. In accordance with the method, fiber material and/or fiber-reinforced material is placed in the depression of the mold such that the material finishes flush with the side walls with respect to the height of the rotor blade spar cap, the depression is sealed off by the sheet-like mold covering, the material is fused together to form the rotor blade spar cap and the rotor blade spar cap is removed from the mold.

IPC Classes  ?

• B29C 70/48 - Shaping or impregnating by compression for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs and impregnating the reinforcements in the closed mould, e.g. resin transfer moulding [RTM]
• B29C 70/34 - Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or coreShaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression
• B29C 70/44 - Shaping or impregnating by compression for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
• F01D 5/14 - Form or construction
• B29C 70/52 - Pultrusion, i.e. forming and compressing by continuously pulling through a die
• B29L 31/08 - Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
• B29K 105/08 - Condition, form or state of moulded material containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns

Abstract

The invention relates to a method for producing a rotor blade by arranging foam (23, 24) in a semi-finished product, introducing resin into the foam-containing semi-finished product, and curing the introduced resin while heat is dissipated and a curing temperature distribution is obtained, a first foam (23) being arranged in regions of the semi-finished product with a higher curing temperature, and a second foam (24) in regions with a lower curing temperature, and a foam with a higher temperature resistance than the second foam (24) being chosen as the first foam (23).

IPC Classes  ?

• B29C 67/24 - Shaping techniques not covered by groups , or characterised by the choice of material
• B29C 70/44 - Shaping or impregnating by compression for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
• B29D 99/00 - Subject matter not provided for in other groups of this subclass
• B29C 44/56 - After-treatment of articles, e.g. for altering the shape
• B29C 70/86 - Incorporating in coherent impregnated reinforcing layers
• F01D 5/28 - Selecting particular materialsMeasures against erosion or corrosion
• B29K 25/00 - Use of polymers of vinyl-aromatic compounds as moulding material
• B29K 27/06 - PVC, i.e. polyvinylchloride
• B29K 75/00 - Use of polyureas or polyurethanes as moulding material
• B29L 31/08 - Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers

Abstract

An openwork load-bearing structure for a wind turbine, in particular a lattice-tower structure for a wind turbine, in particular a foundation structure for a wind turbine, in particular for anchoring an offshore wind turbine in the ground via driven foundation piles, wherein the openwork load-bearing structure has primary structures, via which loads which occur in the load-bearing structure as a result of the wind turbine are dissipated, and secondary structures, which perform functional, rather than load-dissipating, tasks, wherein the secondary structures are arranged on the primary structures and are connected integrally thereto, and wherein the integral connection between the primary and the secondary structures is in the form of a connecting layer arranged therebetween. Also, a method for producing a lattice-tower structure for a wind turbine, in particular a foundation structure for a wind turbine, in particular for anchoring an offshore wind turbine in the ground via foundation piles.

IPC Classes  ?

• E04B 1/41 - Connecting devices specially adapted for embedding in concrete or masonry
• E02D 27/42 - Foundations for poles, masts, or chimneys
• E04B 1/19 - Three-dimensional framework structures
• E04H 12/22 - Sockets or holders for poles or posts
• E04H 12/34 - Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the like

Abstract

A method for manufacturing a composite fiber component for a rotor blade of a wind turbine that includes introducing a fiber material into a mold, supplying a flowable matrix material via a longitudinally extending runner of the mold using a vacuum infusion method such that the fiber material is soaked with matrix material from the runner and the matrix material flows transversely to the longitudinal extension of the runner such that a first region of the fiber material is substantially soaked with matrix material from a first section of the runner and a second region of the fiber material is substantially soaked with matrix material from a second region of the runner, and matrix material flow rates are set for the first section and the second section of the runner depending on thicknesses of the fiber material in the first region and the second region of the runner, respectively.

IPC Classes  ?

• B29C 33/00 - Moulds or coresDetails thereof or accessories therefor
• B29C 70/44 - Shaping or impregnating by compression for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
• B29C 70/54 - Component parts, details or accessoriesAuxiliary operations
• B29C 70/48 - Shaping or impregnating by compression for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs and impregnating the reinforcements in the closed mould, e.g. resin transfer moulding [RTM]
• B29K 105/08 - Condition, form or state of moulded material containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
• B29L 31/08 - Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers

Abstract

A composite fiber component for a rotor blade of a wind power plant including a first sandwich core and a second sandwich core arranged next to each other, each having an inside facing a rotor blade interior and an outside facing a rotor blade exterior. A first fiber-containing laminate layer is arranged on the inside of the first sandwich core and on the outside of the second sandwich core. A second fiber-containing laminate layer is arranged on the outside of the first sandwich core and on the outside of the second sandwich core. And, a third fiber-containing laminate layer is arranged on the inside of the first sandwich core and on the inside of the second sandwich core. Also disclosed is a rotor blade for a wind power plant having a composite fiber component as disclosed.

IPC Classes  ?

• B29C 70/68 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers
• F01D 5/28 - Selecting particular materialsMeasures against erosion or corrosion
• F03D 1/06 - Rotors

Abstract

A wind turbine having a rotor, a generator driven by the rotor, a converter, a control device having an input for a control signal for reactive power output and a controller for the converter, the controller determining a reactive power target value for the wind turbine and correcting the output reactive power in dependence on the voltage present at the wind turbine, and an additional module for the controller having separate small and large signal paths and interacting with the controller such that the small signal path has an additional storage element in comparison with the large signal path, which additional storage element stores state values of the small signal path for the past. Thus, small voltage changes can be reacted to more slowly and while taking into account past values, whereas large changes can be reacted to quickly, in particular in the event of a network short circuit.

IPC Classes  ?

• F03D 9/00 - Adaptations of wind motors for special useCombinations of wind motors with apparatus driven therebyWind motors specially adapted for installation in particular locations
• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
• F03D 7/04 - Automatic controlRegulation
• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
• F03D 7/00 - Controlling wind motors
• H02P 9/30 - Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices using semiconductor devices
• H02J 3/16 - Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power

Abstract

An apparatus is disclosed for storing, tapering, cutting and dispensing preform layers of material includes a device for storing coiled lengths of the preform layers of material and a device for receiving coiled lengths of the preform layers of material. The device includes a grinding device to grind portions of the preform layers of material and a cutter to cut the grinded portions of material. A programmable controller is configured to control the operations of at least one of the device and mechanism.

IPC Classes  ?

• B23P 15/04 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass turbine or like blades from several pieces
• F03D 80/00 - Details, components or accessories not provided for in groups
• B29C 70/02 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising combinations of reinforcements and fillers incorporated in matrix material, forming one or more layers, with or without non-reinforced or non-filled layers
• B29B 11/16 - Making preforms characterised by structure or composition comprising fillers or reinforcements
• B29D 99/00 - Subject matter not provided for in other groups of this subclass
• B29C 70/08 - Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, with or without non-reinforced layers
• F03D 1/06 - Rotors
• B29C 70/54 - Component parts, details or accessoriesAuxiliary operations
• B29L 31/08 - Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers

Abstract

The invention relates to a test bench (1) for testing a drive train of a wind turbine, comprising a drive device (40) for introducing test power into the drive train, which can be detachably connected to a drive train to be tested. The invention further relates to a method for testing a drive train of a wind turbine by way of a test bench (1), and to a drive train of a wind turbine. The test bench (1) according to the invention is characterized in that the drive device (40) for testing a drive train is or will be fitted and mounted on or to the drive train so as to be removable, wherein most of the weight of the drive device (40) is borne by the drive train when the drive device (40) is fitted or mounted.

IPC Classes  ?

• G01L 1/02 - Measuring force or stress, in general by hydraulic or pneumatic means
• G01M 13/02 - GearingsTransmission mechanisms
• F03D 17/00 - Monitoring or testing of wind motors, e.g. diagnostics

Abstract

Wind farm comprising a farm master and a plurality of wind energy installations. The farm master has a controller with an input for a control parameter for power supplied to a grid and transmits desired value specifications to a local controller of the wind energy installations. The local controller has a dual structure and comprises a desired value channel, to which the desired value specification is applied by the farm master and which is designed to output a stationary reactive power desired value, and a responsive channel comprising an autonomous controller, to which no desired value specification is applied by the farm master and to which an actual voltage of the particular wind energy installation is applied via a washout filter. The autonomous controller with the washout filter enables a fast and dependent response to transient disturbances (e.g., voltage spikes and voltage dips as a result of a short circuit).

IPC Classes  ?

• F03D 7/04 - Automatic controlRegulation
• G05B 15/02 - Systems controlled by a computer electric
• H02J 3/18 - Arrangements for adjusting, eliminating or compensating reactive power in networks
• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers

Abstract

Structural preform layers of multiple rigid unidirectional strength elements or rods are constructed and arranged for use in fabricating load-bearing support structures and reinforcements of wind turbine blades. Individual preform layers include multiple elongate unidirectional strength elements or rods arranged in a single layer along a longitudinal axis of the preform layer. Each preform layer includes one or more fibrous carrier layers to which the multiple strength elements or rods are joined and arranged in the single layer. Each strength element or rod is longitudinally oriented and adjacent to other elements or rods. Individual strength elements or rods include a mass of substantially straight unidirectional structural fibers embedded within a matrix resin such that the elements or rods have a substantially uniform distribution of fibers and high degree of fiber collimation. The relative straightness of the fibers and fiber collimation provide strength elements or rods and the preform layers with high rigidity and significant compression strength.

IPC Classes  ?

• F03D 11/00 - Details, component parts, or accessories not provided for in, or of interest apart from, the other groups of this subclass
• F03D 1/06 - Rotors
• B29B 11/16 - Making preforms characterised by structure or composition comprising fillers or reinforcements
• B29C 70/02 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising combinations of reinforcements and fillers incorporated in matrix material, forming one or more layers, with or without non-reinforced or non-filled layers
• B29C 70/08 - Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, with or without non-reinforced layers
• B29D 99/00 - Subject matter not provided for in other groups of this subclass
• B29L 31/08 - Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers

Abstract

lim) is altered as a function of a blade pitch angle movement rate (ω) set by the control. The invention also relates to a corresponding wind turbine (10).

IPC Classes  ?

• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
• F03D 7/04 - Automatic controlRegulation
• F03D 9/25 - Wind motors characterised by the driven apparatus the apparatus being an electrical generator

Abstract

A converter including a converter control for a wind turbine and a chopper, wherein the converter control includes a dynamic limit value which is allowable for a first tolerance time and a static limit value of the converter. Furthermore, an overcurrent module is provided which includes a limit value expander which is designed to increase the static limit value by a portion of the difference from the dynamic limit value as additional current, and a dynamic module which interacts with the limit value expander in such a way that overcurrents between the static limit value which is increased by the additional current and the dynamic limit value are routed in a first stage to the converter and in a second stage at least partially to the chopper, wherein a switch is made to the second stage after a second tolerance time.

IPC Classes  ?

• H02J 1/10 - Parallel operation of dc sources
• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
• H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
• H02M 1/32 - Means for protecting converters other than by automatic disconnection
• H02P 29/024 - Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
• H02M 5/04 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters
• H02P 29/032 - Preventing damage to the motor, e.g. setting individual current limits for different drive conditions
• H02P 9/00 - Arrangements for controlling electric generators for the purpose of obtaining a desired output
• H02P 101/15 - Special adaptation of control arrangements for generators for wind-driven turbines

Abstract

In the method according to the invention for communicating between installations, which are organized in an order according to a sortable feature, for example installation numbers, in a wind farm, in which information transmitted by an installation in the form of a message is received by all other installations in the wind farm, a cyclically recurring, temporal transmission interval is set up. A point in time in the transmission interval at which the installation can transmit a message is assigned to each installation on the basis of the position thereof in the order, wherein points in time are organized from the start of the transmission interval, starting from the installation number at the first position in the order, in accordance with the position in the order. The start of the transmission interval is synchronized in all installations using a message from the installation at the first position in the order.

IPC Classes  ?

• H04L 12/417 - Bus networks with decentralised control with deterministic access, e.g. token passing

Abstract

Method for operating an offshore wind farm with at least one wind turbine system and a navigation device, which is operated in a normal mode, wherein a hazard signal is received by a receiving device, the received hazard signal is supplied to a control device that switches the navigation device from the normal mode to a an emergency lighting mode.

IPC Classes  ?

• F03D 11/00 - Details, component parts, or accessories not provided for in, or of interest apart from, the other groups of this subclass
• G08B 5/38 - Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmissionVisible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electromagnetic transmission using visible light sources using flashing light
• F03D 80/00 - Details, components or accessories not provided for in groups
• F03D 80/10 - Arrangements for warning air traffic

Abstract

A direct mold includes a plank frame and a mold surface body held in shape by the plank frame. The plank frame is made of a plurality of planar panels that are aligned transversely to the longitudinal extension of the rotor blade and are arranged spaced with respect to each other in the direction of the longitudinal extension of the rotor blade. The panels of the plank frame have recesses, into which the mold surface body is inserted and which reproduces in its sequence in the plank frame mainly a progression of a contour of a part of a rotor blade profile. The mold surface body has a layer structure that includes a support layer and a sandwich layer. The support layer is made of rails that are aligned in the longitudinal direction of the rotor blade in a manner bridging the distances between the panels.

IPC Classes  ?

• F03D 1/06 - Rotors
• B29C 70/02 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising combinations of reinforcements and fillers incorporated in matrix material, forming one or more layers, with or without non-reinforced or non-filled layers
• B29D 99/00 - Subject matter not provided for in other groups of this subclass
• B29C 33/02 - Moulds or coresDetails thereof or accessories therefor with incorporated heating or cooling means
• B29L 31/08 - Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
• B29C 33/30 - Mounting, exchanging or centering
• B29C 33/38 - Moulds or coresDetails thereof or accessories therefor characterised by the material or the manufacturing process

Abstract

A method for handling a wind powerplant's rotor hub or to handle a wind powerplant's rotor using a hoist, in particular for erecting a wind powerplant or for assembling or disassembling a rotor to and from such a powerplant, in particular a hub or a rotor being configured by means of one assembly side to the wind powerplant's tower, the hub or rotor being raised or held by the hoist. In the raised state, the hub is tilted by a tilting mechanism acting on it out of the initial, raised position by a predetermined angle of tilting, or the rotor is tilted by a tilting mechanism acting on the rotor blade roots of the rotor through a predetermined angle of tilting. A mechanism to handle a wind powerplant's rotor hub of a wind powerplant's rotor, in particular for assembling or dismantling a rotor to or from its wind powerplant.

IPC Classes  ?

• F03D 1/00 - Wind motors with rotation axis substantially parallel to the air flow entering the rotor
• B66C 1/10 - Load-engaging elements or devices attached to lifting, lowering, or hauling gear of cranes, or adapted for connection therewith for transmitting forces to articles or groups of articles by mechanical means
• B66C 1/62 - Load-engaging elements or devices attached to lifting, lowering, or hauling gear of cranes, or adapted for connection therewith for transmitting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
• F03D 1/06 - Rotors

Abstract

The invention relates to a mobile rotary drive for a wind rotor of a wind power plant having a frame comprising a drive wheel for driving a segment of a rotor shaft of the wind power plant and a drive set which drives the drive wheel in rotation as a drive pinion, wherein the drive wheel is a friction wheel and interacts with a pressing device in such a way that the pressing device generates a force which presses the friction wheel onto the segment with the result that the friction wheel can apply a drive torque to the segment through friction, wherein a torque support for supporting an opposing torque to the drive torque generated by the friction wheel is also provided. Thanks to the friction wheel drive, there is no need for specific pre-equipping of the wind power plant. The invention makes available a mobile rotary drive which can be transported from one wind power plant to another.

IPC Classes  ?

• F03D 11/02 - Transmission of power, e.g. using hollow exhausting blades
• F03D 1/00 - Wind motors with rotation axis substantially parallel to the air flow entering the rotor

Abstract

The invention relates to a device (10) for manufacturing a fiber composite component (3, 4, 5), which is connected to an attachment element (22), for a rotor blade (2) of a wind turbine (1), wherein the fiber composite component (3, 4, 5) is or will be manufactured from at least one fiber material (15, 21) and at least one matrix material, wherein the attachment element (22) is provided with a first region (221) arranged outside of the fiber composite component (3, 4, 5) and a second region (222) integrated into the fiber composite component (3, 4, 5), comprising a manufacturing mold (11) for the fiber composite component (3, 4, 5) with a recess (12), wherein the recess (12) has a first region (121) for receiving the first region (221) of the attachment element (22), and a retention device (13), by means of which fluid matrix material is or will be retained from the first region (121) of the recess (12).

IPC Classes  ?

• F03D 1/06 - Rotors
• B29C 70/42 - Shaping or impregnating by compression for producing articles of definite length, i.e. discrete articles
• B29C 70/86 - Incorporating in coherent impregnated reinforcing layers
• B29C 70/72 - Encapsulating inserts having non-encapsulated projections, e.g. extremities or terminal portions of electrical components
• F03D 80/30 - Lightning protection

Abstract

A tower or a tower segment of a wind turbine, having a door for entering the inside of the tower, comprising a door frame, which has a door opening that is preferably closed by a door leaf, and a door frame for a door of a tower of a wind turbine, the frame having a door opening that is preferably closed by a door leaf, and a wind turbine having a tower, a door provided for entering the inside of the tower, and a staircase leading to the door on the outside of the tower, and an air passage opening in at least one advantageous location. The door frame has at least one air passage opening, particularly an air inlet opening.

IPC Classes  ?

• E04H 12/00 - TowersMasts or polesChimney stacksWater-towersMethods of erecting such structures
• F03D 11/00 - Details, component parts, or accessories not provided for in, or of interest apart from, the other groups of this subclass
• F03D 11/04 - Mounting structures

Abstract

A method for operating a wind power plant having at least one rotor blade, the blade angle of which can be adjusted. The wind power plant is operated with a predefinable reduced energy output set point. To determine the potential output, at least one predefinable operating parameter of the wind power plant is measured and is applied to at least one stored characteristic curve for the reduced energy output set point. The actual energy output is determined and the loss in the output is formed from the difference between the potential output and the actual energy output.

IPC Classes  ?

• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
• G01W 1/02 - Instruments for indicating weather conditions by measuring two or more variables, e.g. humidity, pressure, temperature, cloud cover or wind speed
• F03D 7/04 - Automatic controlRegulation

Abstract

A method for determining an energy yield loss of a first wind turbine of a wind farm that includes a plurality of wind turbines. The first wind turbine is operated in a reduced energy yield mode that is outside an energy-optimized normal operating mode and a reduced energy yield of the first wind turbine is determined. At least one second wind turbine is selected according to a pre-determinable criterion. The energy yield of the at least one second wind turbine is determined and depending upon the energy yield of the at least one second wind turbine, an energy yield potential of the first wind turbine is determined. The difference between the energy yield potential of the first wind turbine and the determined reduced energy yield is formed.

IPC Classes  ?

• G01R 21/133 - Arrangements for measuring electric power or power factor by using digital technique
• G01M 15/00 - Testing of engines
• F03D 7/04 - Automatic controlRegulation
• F03D 11/00 - Details, component parts, or accessories not provided for in, or of interest apart from, the other groups of this subclass

Abstract

Structural preform layers of multiple rigid unidirectional strength elements or rods are constructed and arranged for use in fabricating load-bearing support structures and reinforcements of wind turbine blades. Individual preform layers include multiple elongate unidirectional strength elements or rods arranged in a single layer along a longitudinal axis of the preform layer. Each preform layer includes one or more fibrous carrier layers to which the multiple strength elements or rods are joined and arranged in the single layer. Each strength element or rod is longitudinally oriented and adjacent to other elements or rods. Individual strength elements or rods include a mass of substantially straight unidirectional structural fibers embedded within a matrix resin such that the elements or rods have a substantially uniform distribution of fibers and high degree of fiber collimation. The relative straightness of the fibers and fiber collimation provide strength elements or rods and the preform layers with high rigidity and significant compression strength.

IPC Classes  ?

• F04D 29/38 - Blades
• B63H 1/26 - Blades
• F03D 1/06 - Rotors
• B29B 11/16 - Making preforms characterised by structure or composition comprising fillers or reinforcements
• B29C 70/02 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising combinations of reinforcements and fillers incorporated in matrix material, forming one or more layers, with or without non-reinforced or non-filled layers
• B29C 70/08 - Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, with or without non-reinforced layers
• B29D 99/00 - Subject matter not provided for in other groups of this subclass
• B29L 31/08 - Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers

Abstract

Structural preform layers of multiple rigid unidirectional strength elements or rods are constructed and arranged for use in fabricating load-bearing support structures and reinforcements of wind turbine blades. Individual preform layers include multiple elongate unidirectional strength elements or rods arranged in a single layer along a longitudinal axis of the preform layer. Each preform layer includes one or more fibrous carrier layers to which the multiple strength elements or rods are joined and arranged in the single layer. Each strength element or rod is longitudinally oriented and adjacent to other elements or rods. Individual strength elements or rods include a mass of substantially straight unidirectional structural fibers embedded within a matrix resin such that the elements or rods have a substantially uniform distribution of fibers and high degree of fiber collimation. The relative straightness of the fibers and fiber collimation provide strength elements or rods and the preform layers with high rigidity and significant compression strength.

IPC Classes  ?

• F04D 29/38 - Blades
• B63H 1/26 - Blades
• B29B 11/16 - Making preforms characterised by structure or composition comprising fillers or reinforcements
• F03D 11/00 - Details, component parts, or accessories not provided for in, or of interest apart from, the other groups of this subclass
• B29C 70/08 - Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, with or without non-reinforced layers
• B29D 99/00 - Subject matter not provided for in other groups of this subclass
• F03D 1/06 - Rotors
• B29C 70/02 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising combinations of reinforcements and fillers incorporated in matrix material, forming one or more layers, with or without non-reinforced or non-filled layers
• B29L 31/08 - Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers

Goods & Services

Wind-powered machines; turbines, in particular wind turbines (except for land vehicles); parts and accessories (included in class 7) for such wind-powered machines, in particular rotor blades, rotor consoles, blade hubs, machine housings, yaw rings, yaw gears, brakes, main drive shafts, universal joints, gears, gear boxes, couplings, motors, mechanical rotor adjusters, electric generators and emergency power generators. Switch cabinets (electric installation material) as well as therein contained electrical and electronic instruments and apparatus for recording, processing, storage and transmission of data; switch cabinets (electric installation material) as well as therein contained electrical and electronic control apparatus and instruments; electrical and electronic regulating apparatus; electrical and electronic regulating, checking (supervision), control and monitoring apparatus and instruments; data processing equipment, computer and computer software; interface apparatus and interface programs for computers; voltage surge protectors; vibration sensors; watt-hour meter; inverter units (electric converters); electric transformers; all afore-mentioned goods for wind power plants and wind farms. Professional business consultancy with regard to wind power plants and wind farms. Building construction in the field of wind power plants; installation services; maintenance services, rebuilding machines that have been worn or partially destroyed; maintenance and repair of wind power plants; assembly services relating to the installation of rotor blades for others. Production of energy using wind power; production of electricity using wind power. Remote maintenance (remote control and remote monitoring) through computerised retrieval of wind power plants and wind farms, in particular via the Internet; conducting technical measurements, inspections and calculations in the field of wind power plants and wind farms; electronic data storage; surveying within the scope of data analysis in the field of wind power plants and wind farms; design and development of computer software in the field of wind power plants and wind farms; technical planning and development as well as technical project management and consultancy therefor in the field of wind power plants; engineering services for calculation, dimensioning and design of rotor blades; technical research for wind power plants and wind farms; providing technical information about the development of wind power plants and wind farms; technical condition monitoring of rotor blades.

Abstract

A harmonic predictor for a wind farm comprising at least two wind turbines, each having a generator with a converter for generating electrical energy. The harmonic predictor determines the harmonic component expected from the wind farm in order to limit the harmonic component to a harmonic limit. The harmonic predictor comprises a calculation module, an iteration module and a summing module. The calculation module calculates a complex mean value over at least one period of the harmonic component of one of the wind turbines and determines a first equivalent vector therefrom. The iteration module successively connects the calculation module to at least one other of the wind turbines to form at least one second equivalent vector. The summing module sums the equivalent vectors to form a total vector and compares the total vector with the harmonic limit.

IPC Classes  ?

• H02P 9/04 - Control effected upon non-electric prime mover and dependent upon electric output value of the generator
• F03D 9/00 - Adaptations of wind motors for special useCombinations of wind motors with apparatus driven therebyWind motors specially adapted for installation in particular locations
• H02J 3/01 - Arrangements for reducing harmonics or ripples
• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
• H02J 3/18 - Arrangements for adjusting, eliminating or compensating reactive power in networks
• G01R 31/42 - AC power supplies
• G01R 19/25 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques

Abstract

A wind turbine having a generator for generating electrical energy and a transformer is disclosed. The transformer is designed to receive electrical energy from the generator on a secondary side and to discharge said electrical energy again on a primary side at a higher voltage. The wind turbine also comprises a temperature monitoring means for the transformer. The voltage supply to the temperature monitoring means is fed from the primary side of the transformer. The temperature monitoring means is thereby independent of the control system of the wind turbine. The temperature monitoring means reduces the risk of the transformer overheating. A method for operating such a wind turbine is also disclosed.

IPC Classes  ?

• F03D 9/00 - Adaptations of wind motors for special useCombinations of wind motors with apparatus driven therebyWind motors specially adapted for installation in particular locations
• H02P 9/04 - Control effected upon non-electric prime mover and dependent upon electric output value of the generator
• H02P 9/02 - Arrangements for controlling electric generators for the purpose of obtaining a desired output Details
• F03D 11/00 - Details, component parts, or accessories not provided for in, or of interest apart from, the other groups of this subclass

Abstract

Operating a wind farm in which the power generated by the wind energy installations is fed to a power supply system via a system internal to the wind farm and via a substation is disclosed. The farm director of the wind farm can ascertain a standard target voltage value and transmit it to the control units of the individual wind energy installations on the wind farm, which can use an overall factor to regulate the reactive power generated by a wind energy installation. The overall factor can be calculated from the difference between the actual voltage across the wind energy installation and the target voltage value, multiplied by a gain factor. On account of the impedance in the internal system of the wind farm, wind energy installations situated far away from the substation thus generate less reactive power than the wind energy installations which are situated close to the substation.

IPC Classes  ?

• H02J 3/18 - Arrangements for adjusting, eliminating or compensating reactive power in networks
• F03D 9/25 - Wind motors characterised by the driven apparatus the apparatus being an electrical generator
• H02J 3/16 - Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power

Abstract

A method for operating a wind farm and to a wind farm is disclosed. When a wind farm and the wind energy installations involve target values for the reactive power being prescribed by a farm regulatory device, said target values for the reactive power ignored by the control units when controlling the respective wind energy installation in the event of a power supply system fault in the power supply system. Only when the power supply system fault has been rectified are said target values considered by the control units again for controlling the respective wind energy installation.

IPC Classes  ?

• H02P 9/04 - Control effected upon non-electric prime mover and dependent upon electric output value of the generator
• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
• F03D 7/04 - Automatic controlRegulation
• F03D 9/00 - Adaptations of wind motors for special useCombinations of wind motors with apparatus driven therebyWind motors specially adapted for installation in particular locations
• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers

Abstract

A method for operating a wind turbine (10). The wind turbine (10) is operated with variable rotational speed between predeterminable minimum and maximum rotational speeds. A characteristic variable (51) of an oscillation of the wind turbine (10) is detected. The wind turbine (10) includes a tower (14) and a rotor (13). An open-loop or closed-loop control device (36, 50) provides open-loop control or closed-loop control of the rotational speed of the rotor (13) between a minimum rotational speed and a maximum rotational speed during a power-supplying operation of the wind turbine. A sensor (40) detects a characteristic variable (51) of an oscillation of the wind turbine (10) and the minimum rotational speed is changed depending on the characteristic value (51) of the oscillation. The minimum rotational speed is altered depending on the characteristic variable (51) of the oscillation by the open-loop or closed-loop control device (36, 50).

IPC Classes  ?

• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
• F03D 7/04 - Automatic controlRegulation

Abstract

T, a slip signal is determined from the frequency of the network and the rotational speed of the generator, a gain value is calculated according to the slip signal, and the gain value is modified according to the reactive power target signal for the network-side inverter. The distribution of the reactive power between the two inverters is thus optimized over a wide operating range, not only at individual predetermined operating points.

IPC Classes  ?

• H02M 5/458 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters using discharge tubes or semiconductor devices to convert the intermediate DC into AC using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 5/42 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters
• H02J 3/18 - Arrangements for adjusting, eliminating or compensating reactive power in networks
• H02P 9/00 - Arrangements for controlling electric generators for the purpose of obtaining a desired output

Abstract

A bulkhead (22) of a wind turbine (10) to be arranged on a rotor blade connection of a rotor blade (14), especially on a rotor hub (9). The bulkhead (22) has a core body (30). A layer (31, 32) of fiberglass-reinforced plastic (31, 32) is arranged on the core body (30) on both sides respectively and a metal layer body (33) is arranged on one side of the layer of fiberglass-reinforced plastic (31). A method for producing a bulkhead (22) of a wind turbine (9), which is arranged on a rotor blade connection of a rotor blade (14) and a use of a bulkhead (22) of a wind turbine (10).

IPC Classes  ?

• F03D 1/00 - Wind motors with rotation axis substantially parallel to the air flow entering the rotor
• F03D 1/06 - Rotors
• F03D 80/00 - Details, components or accessories not provided for in groups
• F03D 80/50 - Maintenance or repair

Abstract

A wind power plant tower having a multiplicity of tower segments which are arranged one on top of the other and enclose an interior tower space, and at least two system components from the group of a conductor, a lighting and a climbing device for operating personnel arranged in the tower inner space. Segments for the system components are structurally combined with a beam to form a separate supply module spanning a number of tower segments. The laborious assembly of the system components can thus be carried out at ground level, and only the supply module thus completed, which spans a number of segments, is then mounted in the tower. This obviates the need for a considerable amount of work in the form of hazardous working in the tower.

IPC Classes  ?

• E04H 12/00 - TowersMasts or polesChimney stacksWater-towersMethods of erecting such structures
• F03D 11/04 - Mounting structures
• E04H 12/28 - Chimney stacks, e.g. free-standing, or similar ducts
• F03D 11/00 - Details, component parts, or accessories not provided for in, or of interest apart from, the other groups of this subclass

Abstract

ref). Furthermore, additional regulation is provided, which has an input for an additional power and is designed to produce a rotation speed change signal therefrom, taking account of a rotator inertia moment, and to output this as an output signal, which is added to the nominal rotation speed signal via a logic element. Kinetic energy is taken from the wind rotor in a controlled manner by reducing the rotation speed and is converted by the generator to additional electrical energy. This allows primary regulation power to be made available deliberately by rotation speed variation, to be precise even in unsteady wind conditions.

IPC Classes  ?

• F03D 7/00 - Controlling wind motors
• F03D 7/04 - Automatic controlRegulation
• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor

Abstract

A wind energy plant comprising a rotor having blades and a generator driven by said rotor for generating electric energy. The pitch of the blades can be adjusted and a pitch system for adjusting the pitch angle of the blades is provided, which is supplied by a hub power source. An additional electric load is provided on the hub. A pitch power control device is provided which dynamically distributes the power of the hub power source between the pitch system and the additional electric load and further acts on the pitch system such that its power consumption during high-load operation is reduced. Thus, the power consumption of the pitch system during high-load operation can be reduced and additional power provided for operating the additional load. Even large additional loads, such as a blade heater, can be operated in this way, without having to boost the hub power source.

IPC Classes  ?

• F03D 9/00 - Adaptations of wind motors for special useCombinations of wind motors with apparatus driven therebyWind motors specially adapted for installation in particular locations
• F03D 11/00 - Details, component parts, or accessories not provided for in, or of interest apart from, the other groups of this subclass
• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor

Abstract

Structural preform layers of multiple rigid unidirectional strength elements or rods are constructed and arranged for use in fabricating load-bearing support structures and reinforcements of wind turbine blades. Individual preform layers include multiple elongate unidirectional strength elements or rods arranged in a single layer along a longitudinal axis of the preform layer. Each preform layer includes one or more fibrous carrier layers to which the multiple strength elements or rods are joined and arranged in the single layer. Each strength element or rod is longitudinally oriented and adjacent to other elements or rods. Individual strength elements or rods include a mass of substantially straight unidirectional structural fibers embedded within a matrix resin such that the elements or rods have a substantially uniform distribution of fibers and high degree of fiber collimation. The relative straightness of the fibers and fiber collimation provide strength elements or rods and the preform layers with high rigidity and significant compression strength.

IPC Classes  ?

• F04D 29/38 - Blades
• B63H 1/26 - Blades

Goods & Services

Wind-powered machines; Turbines, in particular wind turbines (except for land vehicles); Parts and fittings (included in class 07) for the aforesaid wind power machines, in particular rotor blades, rotor consoles, blade hubs, machine housings, rotation devices, yaw rings, yaw gears, brakes, main drive shafts, universal joints, gears, gear boxes, couplings, motors, mechanical rotor adjusters, electric generators and emergency power units. Switch cabinets (electric installation material) and electric and electronic instruments and apparatus contained therein for recording, processing, storage and transmission of data; Switching circuits (electric installation material) and electric and electronic control apparatus and instruments contained therein; Electric and electronic regulating apparatus; Electric and electronic regulating, checking (supervision), control and monitoring apparatus and instruments; Data processing equipment, computers and computer software; Interfaces (for computers); Power surge protection equipment; Vibration sensors; Watt-hour meters; Converters (electric converters); Electric transformers; All the aforesaid goods being for wind power installations and wind farms. Professional business consultancy with regard to wind power stations and wind farms. Building construction in the field of wind power installations; Installation services; Maintenance, reconditioning of machines that are worn out or partially destroyed, servicing and repair of wind power installations; Assembly of rotor blades, for others. Production of wind energy; Generation of electricity from wind power. Remote maintenance (remote control and remote monitoring) by means of computer-aided queries of wind power stations and wind farms, in particular via the Internet; Technical measurement, inspection and computation in the field of wind power stations and wind farms; Electronic data storage services; Technical reports in the context of analysis of data in the field of wind power stations and wind farms; Design and development of computer software in the field of wind power plants and wind farms; Technical consultancy, technical planning and development, and technical project management relating to wind power station projects; Engineering for the calculation, construction and design of rotor blades; Technical research relating to wind power stations and wind farms; Providing of technical information relating to wind power stations and wind farms; Technical condition monitoring of rotor blades.

Abstract

A wind power plant, including a generator driven by a rotor in order to generate electrical power and a controller that includes a pitch module for adjusting a pitch angle of blades of the rotor. The controller has an input for a required power reserve and determines a target pitch angle depending on an operating point of the wind power plant. A secondary pitch controller is also provided, which includes a detector for available power and a dynamic offset module. Input signals for the available reserve power determined by the detector, the required reserve power and the generated electrical power are applied to the dynamic offset module, which is designed to determine a value for a pitch angle offset. An activation element varies the target pitch angle by the pitch angle offset.

IPC Classes  ?

• F03D 9/00 - Adaptations of wind motors for special useCombinations of wind motors with apparatus driven therebyWind motors specially adapted for installation in particular locations
• H02P 9/04 - Control effected upon non-electric prime mover and dependent upon electric output value of the generator
• F03D 7/02 - Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
• F03D 9/02 - the apparatus storing power

Abstract

The invention relates to a wind energy system having a support (5), a rotor (6) that is rotatably supported on the support (5) about a rotor axis (7), said rotor having multiple rotor blades (9, 10) and being driven or drivable by means of wind energy (15), an electric generator (16) that is coupled to the rotor (6), said generator being drivable or driven by the rotor (6), a first converter (23) that is electrically coupled to the generator (16), said converter being coupled or capable of being coupled to an electric distribution network (27), at least one electric or partially electric auxiliary system (20), wherein the at least one auxiliary system (20) is or can be electrically coupled to the generator (16) while interconnecting a second converter (33).

IPC Classes  ?

• H02P 9/04 - Control effected upon non-electric prime mover and dependent upon electric output value of the generator
• F03D 9/00 - Adaptations of wind motors for special useCombinations of wind motors with apparatus driven therebyWind motors specially adapted for installation in particular locations

Abstract

A wind energy installation includes a tower and a nacelle arranged at the top of the tower such that it can swivel in the azimuth direction. The installation also includes a plurality of cables which are guided via a loop from the tower into the nacelle, the cables being held at a distance from one another in the loop by means of rotationally fixed and loose holders. The holders each have receptacles for attachment of the cables with a predetermined circumferential separation. The holders include a lower rotationally fixed guide ring and an aligning upper loose guide ring. A loop guide is formed such that the loop is subdivided by means of the rotationally fixed lower guide ring into a curved untwisted area and an extended twisted area.

IPC Classes  ?

• F03D 11/00 - Details, component parts, or accessories not provided for in, or of interest apart from, the other groups of this subclass
• H02G 11/00 - Arrangements of electric cables or lines between relatively-movable parts

Abstract

The invention relates to a rotor blade for wind energy installation, comprising at least one flange running in a longitudinal direction from a rotor blade root to a rotor blade tip, whereby a width of the flange decreases along the longitudinal direction. The invention also relates to a method for producing a rotor blade in that at least one flange with a width decreasing in the longitudinal direction is applied to a rotor blade inner wall, and to a laying assistance device for positioning strips of the flange.

IPC Classes  ?

• F01D 5/18 - Hollow bladesHeating, heat-insulating, or cooling means on blades
• B29C 70/30 - Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or coreShaping by spray-up, i.e. spraying of fibres on a mould, former or core
• F03D 1/06 - Rotors
• B29L 31/08 - Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers

Abstract

a) of greater than 0.9, particularly greater than 1.4 is achieved in turbulent flow.

IPC Classes  ?

• F01D 5/14 - Form or construction
• F03D 1/06 - Rotors

Abstract

A wind energy installation, monitoring device, and method. An exemplary wind energy installation includes a rotor including at least one blade and a generator configured to be driven by the rotor to produce electrical energy. The installation also includes a pitch device configured to vary the at least one blade of the rotor. The pitch device includes a power supply unit with a battery, an actuating drive, a monitoring unit, and a load module configured to switch the actuating drive between an operating mode and a test mode. In the test mode, the actuating drive forms a preselectable defined load for the battery. Accordingly, a high and reproducible load not dependent upon environmental conditions may be applied to conduct a stress test, even during ongoing operation.

IPC Classes  ?

• F03D 9/00 - Adaptations of wind motors for special useCombinations of wind motors with apparatus driven therebyWind motors specially adapted for installation in particular locations

Abstract

A method for access control to installation control systems of wind energy installations. The method includes receiving a requested user name and a requested password, wherein authorizations and checking information are coded in the requested password. The method further includes decoding the authorizations and the checking information from the requested password, checking the requested user name on the basis of the decoded checking information, checking the decoded authorizations if the check of the requested user name on the basis of the decoded checking information has a positive result, and allowing access to an installation control system of a wind energy installation when the decoded authorizations are sufficient. A wind energy installation for implementing the method includes an installation control system and a decoding unit.

IPC Classes  ?

• H04L 9/00 - Arrangements for secret or secure communicationsNetwork security protocols
• H04L 9/32 - Arrangements for secret or secure communicationsNetwork security protocols including means for verifying the identity or authority of a user of the system