A power generation system for feeding electrical power from a generation unit into a three-phase grid via three AC terminals is disclosed. The system includes a relay arrangement for disconnecting the system from the grid having at least three relays. Each of the three relays includes a control coil and two switching contacts operated by the corresponding control coil. Each of the AC terminals is connectable to the grid via a first and a second switching contact, each of which is assigned to a different one of the relays. Further disclosed are a relay arrangement and an inverter with a relay arrangement.
H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
H01H 47/00 - Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
2.
SOFTWARE-BASED CONFIGURATION OF THE POWER CLASS AND ADDITIONAL FUNCTIONS OF AN INVERTER
The disclosure relates to a method for operating a power electronics device that includes checking, at the start of operation, whether exactly one activated power class profile is present from a plurality of different power class profiles, and only when exactly one activated power class profile is present, will a start of operation of the device be permitted under the conditions stored in the activated power class profile. In response to receiving a deactivation request from an authorized person, the activated power class profile is converted into a deactivated power class profile and a deactivation confirmation marked secret and stored on the device is sent to the authorized person. A corresponding power electronics device is likewise disclosed.
The application relates to a method for operating an inverter configured to exchange power between a DC side and an AC side. The inverter includes a bridge circuit and a divided intermediate circuit with at least two partial capacitances, arranged between the DC side and the bridge circuit. The method includes producing a first asymmetry of the partial capacitances relative to one another for generating a first potential position of DC potentials of the partial capacitances of the intermediate circuit relative to ground potential, setting the first potential position of the DC potentials of the partial capacitances of the intermediate circuit to a first setpoint value by varying the asymmetry, the first setpoint value being constant for a first period of time or modulated at a frequency which is at least 100 times lower than an AC frequency of the exchange power.
The application discloses an arrangement/method for insulation measurement on an electric vehicle (EV). The arrangement is configured to be connected to a battery of the EV via EV terminals. The arrangement has a power converter with AC terminals for connecting to an AC grid and DC terminals. A first DC terminal is connectable to a first EV terminal via a first DC switch and a second DC terminal is connectable to a second EV terminal via a second DC switch or via a parallel circuit composed of the second DC switch and a third DC switch. The arrangement is configured to, when the power converter and the AC grid are connected: connect one of the DC terminals to the corresponding EV terminal by closing one of the DC switches, set a DC voltage at the DC terminals by clocking the power converter, and perform the insulation measurement.
B60L 58/16 - Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH]
G01R 31/00 - Arrangements for testing electric propertiesArrangements for locating electric faultsArrangements for electrical testing characterised by what is being tested not provided for elsewhere
G01R 31/52 - Testing for short-circuits, leakage current or ground faults
A method for operating an electrolysis device, having a converter which is connected on an AC voltage side to an AC voltage grid via a decoupling inductance and draws an AC active power from the AC voltage grid, and an electrolyzer, which is connected to the converter on the DC voltage side, is provided. The method includes operating the electrolysis device, when a grid frequency corresponds to a nominal frequency of the ACT voltage grid and is substantially constant over a time period, with an electrical power which is between 50% and 100% of a nominal power of the electrolyzer, and operating the converter in a voltage-impressing manner, such that an AC active power drawn from the AC voltage grid is changed on the basis of a change and/or a rate of change of the grid frequency in the AC voltage grid.
The disclosure relates to a control method for operating an inverter in an energy grid that is connected to an energy supply grid via a controllable disconnecting switch. The method includes operating the inverter in a current-impressing mode when the disconnecting switch is closed, and monitoring the power supply network for a voltage drop. When a voltage drop is detected, the inverter operating mode is changed to a voltage-setting mode, wherein a provisional voltage is set by the inverter. After a predetermined period of time has elapsed after detection of the voltage drop, when the voltage drop persists, the disconnecting switch opens and the voltage set by the inverter is increased to the grid normal voltage. After a predefined time period after detection of the voltage drop, when failure of the energy supply grid does not persist, the inverter operates in the current-impressing mode.
H02J 3/14 - Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
H02M 7/537 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
9.
VOLTAGE SOURCE INVERTER AND POWER GENERATION SYSTEM
The disclosure describes a voltage source inverter having an internal control loop with a setpoint input for a setpoint signal for an active power component of the inverter, and an actual value input for a current actual value of the active power component of the inverter. The inner control loop is a controller with a proportional component and an integral component and is configured to determine a frequency shift as a controller output variable from the difference between the setpoint signal and the current actual value. The inverter is configured to provide an AC voltage that deviates from a predefined fundamental frequency by the determined frequency shift. An outer control loop of the inverter is configured to supply a setpoint signal to the setpoint input as a function of the determined frequency shift in islanded operation. A power generation system can comprise two such inverters.
H02M 7/493 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode the static converters being arranged for operation in parallel
The disclosure relates to a bridge circuit for providing an alternating current at a phase terminal, having first and second direct current terminals for connecting to a direct current source or load. The bridge circuit includes an intermediate circuit, and a bridge with bridge switches. The bridge receives potentials at the direct current terminals and outputs potentials at first and second bridge outputs and a second bridge output which are clocked independently of one another based thereon. First and second connection paths extend between the respective bridge outputs and the phase terminal, wherein each of the connection paths comprises a filter choke. A disconnector with a plurality of relay contacts is arranged between the bridge outputs and the phase terminal. The disclosure relates to an energy conversion system with such a bridge circuit.
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
The disclosure relates to a method for establishing a defined state in an electrochemical system connected to an AC/DC converter via a switch disconnector to exchange electric power. At least one DC connection of the electrochemical system is connected to the AC/DC converter via the disconnecting switch. The method includes, in a first operating state, closing a first switch to establish an electric connection between the DC connections of the electrochemical system. The application additionally relates to a disconnecting device, a power converter, and to an assembly.
The disclosure relates to a method for increasing the lifetime of converter switches in a system having an energy source connected to a DC bus and a DC-to-DC converter having the converter switches. The method includes determining a system state in which electrical power of the energy source is available for which no transmission via the DC-to-DC converter and no output to further participants of the DC bus is provided, and operating the DC-to-DC converter during the determined system state such that power dissipation is generated in the DC-to-DC converter without power being transmitted via the DC-to-DC converter. A system having an energy source and a DC-to-DC converter having the converter switches is disclosed, as well as an energy-generating system having such a system.
H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
H02J 3/32 - Arrangements for balancing the load in a network by storage of energy using batteries with converting means
H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
H02M 1/32 - Means for protecting converters other than by automatic disconnection
A housing of an electrical device for converting electrical power has a main body with a rear wall, side walls and a cover. The cover and body define a an interior space. Components of the electrical device are arranged in the interior space. The cover is connected to the body by a cover closure that includes a fastening structure and a closure housing. The fastening structure is retained in the closure housing, which is fastened to the cover. The body includes a pin that extends from the rear wall of the housing to the cover. A connection between the cover and pin is releasable by turning the fastening structure using a guide peg of the pin and a helically encircling guide groove of the fastening structure.
The disclosure describes an energy supply device for an electrolysis unit and an electrolysis installation comprising the energy supply device and an electrolysis unit connected thereto.
H02M 7/23 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only arranged for operation in parallel
C25B 9/65 - Means for supplying currentElectrode connectionsElectric inter-cell connections
H02M 7/00 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output
15.
METHOD FOR DETERMINING AN OPERATING PARAMETER OF A PV INSTALLATION, PV INSTALLATION HAVING AN INVERTER AND INVERTER FOR SUCH A PV INSTALLATION
A method and associated system for determining an operating parameter of a PV installation having a plurality of PV modules is disclosed. The PV modules each include a shutdown apparatus connected to a transmission apparatus of the PV installation and has a feed-in operation and a shutdown operation. At least one PV module is equipped with a power-optimizing device which is configured to set an operating point of the PV module in an optimizing operation. The method includes determining a first total electrical power of the PV modules in a non-optimizing operation and in the feed-in operation of the shutdown apparatuses, and determining a second total electrical power of the PV modules in the optimizing operation and in the feed-in operation of the shutdown apparatuses. The method includes determining the operating parameter using a difference between the determined first and second total electrical powers.
A method for operating a battery converter in a system includes controlling an exchange power of the battery converter using a battery, which is connected to the battery converter, depending on a voltage of the intermediate circuit in accordance with a converter characteristic curve, identifying a decrease in the intermediate circuit voltage below a rectifying value of the permissible AC voltage of the grid connected to the inverter, and when the decrease is identified, temporarily shifting the converter characteristic curve so that a maximum discharging power of the battery converter is reached at a value of the intermediate circuit voltage that is above or at the rectifying value. A battery converter and a system having such a battery converter are also described.
A device for converting electrical power between a PV generator and an electrolyzer. The device has an inverter arranged between a first side thereof and a transformer, and an active rectifier is arranged between the transformer and a second side of the device, such that an AC side of the active rectifier and an AC side of the inverter are connected to one another via the transformer. The inverter is configured to convert a first DC voltage on the DC side of the inverter into a first AC voltage on the AC side of the inverter and the active rectifier is configured designed to convert a second AC voltage on the AC side of the active rectifier into a second DC voltage on the DC side of the active rectifier. The device has a controller configured to influence a power flow between the first side and the second side of the device from a connected PV generator to a connected electrolyzer by adjusting an AC/DC transformation ratio of the active rectifier between the second AC voltage and the second DC voltage.
The disclosure is directed to an island network detection method using a voltage-impressing converter, and includes determining the frequency and phase of a voltage curve of a sub-network connected to a network connection point of the converter, and generating a voltage curve using a bridge circuit of the converter with the determined frequency. The method also includes determining a correlation between a first temporal variation and a second temporal variation of an output exchanged by the converter with the sub-network, and detecting an island network if the determined correlation undershoots a specified correlation measurement.
The present disclosure includes a system diagnosis method in an energy management system for electrical energy and at least one additional form of energy. The method includes acquiring actual values of one or more operating parameters; comparing the actual values with target values of the operating parameters in order to obtain a deviation; determining whether the deviation of the actual values of the operating parameters from the target values of the operating parameters exceeds a deviation threshold value; determining existence of a malfunction and where it is occurring when the deviation exceeds the deviation threshold value; assigning the malfunction to predefined malfunction groups based on the deviation; and producing a notification signal.
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
The disclosure relates to a housing of an electrical device for converting electrical power, including a main body and a cover. The cover closes the main body to define a self-contained interior space, wherein electrical and electronic components of the electrical device are arranged in the interior space of the housing. The cover is connected to the main body via a detachable securing structure, which may be arranged in the geometrical center of the cover. An electrical device has a housing of this type.
The application discloses a filter-choke to be used in an EMI filter that includes a closed magnetic core having two core-legs, wherein the magnetic core is configured to be assembled out of at least two core-segments, at least two bobbins, each bobbin having a base flange and a tubular section extending in perpendicular direction from the base flange, wherein the tubular section has an opening for receiving one of the two core-legs, and a coil formed by an electric conductor having multiple windings arranged around the tubular section of each bobbin.
The application describes a method for operating an electrolyzer and a fuel cell which, in parallel with one another, are connected to a device-side converter connection of a common bidirectional converter, on
H01M 8/0656 - Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants by electrochemical means
H02M 3/04 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
H02M 7/44 - Conversion of DC power input into AC power output without possibility of reversal by static converters
24.
Power-electronic device comprising a transformer unit and method
The disclosure relates to a power electronics device having at least two inverters and a transformer apparatus having a core arrangement, at least one primary winding and at least one secondary winding that wind around the core arrangement at least in sections.
An electrolysis system includes an electrolyzer and a conversion device for power supply of the electrolyzer out of a grid is disclosed. The electrolyzer includes a plurality of electrolysis cells connected in series to each other. The series connection of electrolysis cells is connected through a positive DC-line and through a negative DC-line to a DC-output of the conversion device. A conscious grounding of the series connection is provided via a grounding line at a connection point of the positive DC-line, at a connection point of the negative DC-line or at a connection point of an intermediate power line between two adjacent electrolysis cells. The electrolysis system has at least one overcurrent protection circuit that is arranged between two adjacent electrolysis cells of the series connection of electrolysis cells and connected in series with an intermediate power line connecting the two adjacent electrolysis cells of the series connection of electrolysis cells, and/or arranged in series with the grounding line between the connection point and ground (PE). If a ground fault is occurring at the series connection of electrolysis cells, one or more of the at least one overcurrent protection circuit is configured to trip and prevents an application of a damaging overcurrent and/or a damaging overvoltage to the electrolysis cells.
The disclosure is a method for operating an inverter with a DC input and an AC output. The DC input is connected to a DC source, bridge branches of a bridge circuit are connected to the AC output via power chokes, and the AC output is connected to an AC grid via isolating switches. The method includes opening the isolating switches, and controlling semiconductor switches of at least two bridge branches of the bridge circuit that are connected downstream of at least one power choke at the AC side, such that a DC source connected to the DC input is loaded. The sum of the currents flowing out of at least one of the at least two bridge branches on the AC side corresponds to the sum of the currents flowing into at least one other bridge branch of the at least two bridge branches on the AC side.
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
H02M 1/088 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
27.
Method for operating an energy supply system, device for exchanging electrical power in an energy supply system, and energy supply system
The disclosure relates to a method for operating an energy supply system, wherein a first and a second DC unit exchange power with an AC bus using a first and a second power converter. With transmission using a transformer, this power is combined and converted using a third power converter into a DC grid power of a DC grid and/or vice versa.
A method for acquiring a characteristic curve of a PV generator is disclosed. In a power generation installation, an output side of each PV generator is connected via an assigned DC-DC converter, in parallel to a DC link as the input element of a DC-AC converter. The method includes reducing a cumulative output power of those DC-DC converters for which the associated PV generators are not intended for acquiring the characteristic curve during the acquisition of the characteristic curve of the PV generator to be scanned to ensure that the sum of the reduced cumulative output power and of the expected maximum power of the PV generator to be scanned does not exceed a nominal power of the DC-AC converter, and subsequently acquiring the characteristic curve of the PV generator to be scanned.
A method for starting an electrolysis system is disclosed. A supply circuit has an AC terminal connected to an AC grid, a DC terminal connected to an electrolyzer, and an AC/DC converter arranged between the AC terminal and the DC terminal. The method includes charging an output capacitor connected to a DC converter terminal of the AC/DC converter, by operating the electrolyzer in a reverse mode, while the AC/DC converter is connected to the electrolyzer and disconnected from the AC grid, connecting the AC/DC converter to the AC grid, reversing the operation of the electrolyzer from the reverse mode to a normal mode as a DC load, to suppress a power flow between the AC grid and the electrolyzer, and operating the electrolyzer in the normal mode with electrical power drawn from the AC grid which is rectified by the AC/DC converter.
C25B 15/06 - Detection or inhibition of short circuits in the cell
H02M 1/32 - Means for protecting converters other than by automatic disconnection
H02M 7/219 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
30.
Electrolysis device having a converter and method for providing instantaneous reserve power for an AC voltage grid
A method for operating an electrolysis device, having a converter which is connected on an AC voltage side to an AC voltage grid via a decoupling inductance and draws an AC active power from the AC voltage grid, and an electrolyzer, which is connected to the converter on the DC voltage side, is provided. The method includes operating the electrolysis device, when a grid frequency corresponds to a nominal frequency of the ACT voltage grid and is substantially constant over a time period, with an electrical power which is between 50% and 100% of a nominal power of the electrolyzer, and operating the converter in a voltage-impressing manner, such that an AC active power drawn from the AC voltage grid is changed on the basis of a change and/or a rate of change of the grid frequency in the AC voltage grid.
A busbar for measuring a direct and/or alternating current has connection regions and at least one resistance region arranged between the connection regions, and two measuring contacts arranged in the resistance region. The busbar has a geometry in which the measuring contacts are currentless during operation of the busbar. The busbar is formed in one piece. An apparatus for determining current and having such a busbar and a power converter having such an apparatus are also disclosed.
G01R 1/20 - Modifications of basic electric elements for use in electric measuring instrumentsStructural combinations of such elements with such instruments
G01R 15/14 - Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
G01R 19/00 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof
A method for logging a user into a device for a power generation plant, using a service gateway, wherein an access authorization of the user for the device is stored on the service gateway, is disclosed. The method includes authenticating the user on the service gateway, sending a device access request using an access device from the user to the service gateway specifying an identifier of the device for the power generation plant, and comparing a device secret stored on the service gateway with a copy of the device secret generated using the device secret and stored on the device, via an SRP protocol.
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
33.
PLATFORM FOR SPACE-SAVING CONFIGURATION OF AN ENERGY CONVERSION INSTALLATION, AND ENERGY CONVERSION INSTALLATION
The disclosure relates to a platform stack for the space-saving configuration of an energy conversion installation, comprising at least two platforms stacked one over another to form the platform stack, wherein each of the platform is configured to position a skid with a respective converter unit of the energy conversion installation such that they are stacked one on top of the other on via the two platforms. The platforms each include a frame structure having a storage surface for the skid, and have alignment elements on a first side and support posts on a second side of the frame structure, opposite the first side.
The application describes operating an inverter having an AC connection, a DC connection and an inverter bridge therebetween. The operation includes operating the inverter in a first mode in which, at the AC connection, an AC grid is supplied with electrical power via the inverter, and the voltage of the AC grid is controlled via a regulation of the inverter. If an increase in a current at the AC connection exceeds a current limit value: changing to a second mode and operating the inverter, wherein a regulation is adapted such that, via a virtual impedance, it limits the current at the AC connection.
H02M 1/32 - Means for protecting converters other than by automatic disconnection
H02M 7/797 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
35.
METHOD AND DEVICE FOR MEASURING AN INSULATION RESISTANCE OF A DC VOLTAGE SOURCE CONNECTED TO A SPLIT INTERMEDIATE CIRCUIT IN MAINS PARALLEL OPERATION
To measure an insulation resistance of a DC voltage source connected to a split intermediate circuit, a midpoint potential of the DC voltage source is shifted by different operation of two voltage converters by way of which two poles of the DC voltage source are each connected to one of two parts of the split intermediate circuit. A change in a residual current across all lines that carry a current flowing across the intermediate circuit from the DC voltage source, resulting from the shifting of the midpoint potential of the DC voltage source, is measured.
The application describes a transfer circuit or system with a first DC bus for connecting a plurality of battery racks to an inverter bridge for a first power exchange with an AC grid. The transfer circuit or system has a second DC bus which is connected to the first DC bus via a DC/DC converter. The transfer circuit or system is arranged to disconnect at least one battery rack of the plurality of battery racks from the first DC bus and to connect it to the second DC bus for performing an intra-battery equalization process. The application also describes a system with a transfer unit and a method for performing an intra-battery equalization process.
An explosion-proof housing for a power electronics unit includes a housing pan and a cover that closes the housing pan via a seal, wherein the cover and the housing pan are pressed against each other at two opposing sides formed by edge regions of the cover and the housing pan via a plurality of fasteners that are configured to be released by rotation and that engage in latching structures. The plurality of fasteners are arranged in a central third of the respective sides. The explosion-proof housing can be used, for example, for a photovoltaic inverter.
The disclosure describes a method for operating an energy supply installation which is connected to an AC supply grid via a transformer, and exchanges electrical power with the AC supply grid via the transformer. The transformer is connected on a first side to the AC supply grid and on a second side to an AC installation grid of the energy supply installation, wherein the energy supply installation has at least one inverter which exchanges electrical power between a DC unit on the DC side of the inverter and the AC installation grid on the AC side of the inverter. The method includes receiving at least one parameter of the power conversion of the at least one inverter by an installation controller, determining a setpoint AC voltage for the AC installation grid by the installation controller according to the parameter, transmitting the setpoint AC voltage to the transformer.
A power converter between an AC side and DC of the power converter is disclosed. The AC side is connected to an AC supply grid and the DC side is connected to a DC grid. The power converter includes a bridge circuit connected to the AC side of the power converter via AC switches and connected to the DC side of the power converter via circuit breakers, wherein a DC link circuit of the power converter is chargeable from the AC supply grid via an AC precharging circuit. The power converter has an insulation monitor to measure the insulation resistance of the DC side when the AC precharging circuit is connected to the DC link circuit. The disclosure also includes a related method.
The application describes a method for balancing voltages on a first and a second DC conductor in a DC grid using a balancing circuit with a first and second semiconductor switch connected in series between the first and second DC conductors, and a connection to a ground potential that is arranged between the first and second semiconductor switches. In the presence of an asymmetry in the voltages of the first and second DC conductors to ground potential, a compensation current is generated between at least one of the DC conductors ground potential via at least one of the semiconductor switches, with the asymmetry in the voltages being reduced by the compensation current (IA), with the voltages of the DC conductors to ground potential being balanced.
H02J 1/08 - Three-wire systemsSystems having more than three wires
G05F 1/613 - Regulating voltage or current wherein the variable actually regulated by the final control device is DC using semiconductor devices in parallel with the load as final control devices
41.
Method for operating a DC voltage grid and power converter for connecting a DC voltage grid to an AC voltage grid
An electrical system includes a power converter and a DC/DC converter configured to transfer power between an AC side and a DC side thereof. The AC side is connected to an AC supply grid and the DC side is connected to a DC grid. The power converter has a bridge circuit connected to the AC side of the power converter via AC relays and connected to the DC side of the power converter via circuit breakers. A measuring device measures a DC power converter voltage and a DC/DC output voltage present on the output side of the DC/DC converter. A control circuit is configured to drive the DC/DC converter. The application also describes a method for operating an electrical system.
A method for defining authentication data of a user at an energy conversion device connected to a grid and a source via a network connection includes receiving at the energy conversion device, via the network connection, a request from the user to newly assign authentication data, receiving at the energy conversion device desired authentication data of the user via the network connection, and storing the desired authentication data in the energy conversion device for an authentication of the user in the event of subsequent attempts to access the energy conversion device, when the energy conversion device is disconnected from the connected grid within a first predefined time window after receiving the request.
A method for operating a hybrid rectifier includes an AC input, a DC output and a thyristor rectifier arranged in a first path, and a transistor rectifier arranged in a second, parallel path. The method includes when a DC voltage at the DC output of the hybrid rectifier is below a voltage threshold value, operating the hybrid rectifier in a first operating state in which the transistor rectifier is isolated from the DC output and connected to the AC input and the thyristor rectifier is connected both to the AC input and to the DC output. When the DC voltage at the DC output of the hybrid rectifier reaches or exceeds the voltage threshold value, operating the hybrid rectifier in a second operating state in which the thyristor rectifier and the transistor rectifier are each connected to the AC input and to the DC output.
H02M 7/23 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only arranged for operation in parallel
H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
H02M 7/17 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only arranged for operation in parallel
H02J 3/18 - Arrangements for adjusting, eliminating or compensating reactive power in networks
44.
Method for self-testing of a phase of a 3-level ANPC converter with LC filter
A method for testing an inverter having a bridge comprising a first switch (T1) arranged between a positive connection (DC+) of a divided link circuit, having a center point (M), and a positive inner connection (PI), a second switch (T2) arranged between the positive inner connection (PI) and a bridge output (BR), a third switch (T3) arranged between the bridge output (BR) and a negative inner connection (NI), a fourth switch (T4) arranged between the negative inner connection (NI) and a negative connection (DC−) of the divided link circuit, a fifth switch (T5) arranged between the center point (M) and the positive inner connection (PI), and a sixth switch (T6) arranged between the center point (M) and the negative inner connection (NI) is disclosed. A grid filter having a filter inductor (LF) and a filter capacitor (CF) is connected to the bridge output (BR). The method comprises applying a link circuit voltage to the divided link circuit, while the bridge output (BR) is isolated from a connected grid using the connected grid filter, fully discharging the filter capacitor (CF), closing the first switch (T1) and the sixth switch (T6), while the fourth switch (T4) and the fifth switch (T5) are open, subsequently clocking the second switch (T2) using a plurality of short pulses, wherein the duty cycle of the short pulses is predetermined between 1% and 5%, subsequently to the clocking determining a voltage dropped across the filter capacitor (CF) and identifying a fault state of the bridge when the voltage dropped is outside of a voltage window with an upper window limit and a lower window limit. An inverter is also disclosed, which has a control system designed and set up to execute the method according to one of the preceding claims and to connect the inverter to a connected grid only if a fault state is not identified.
H02M 7/537 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
45.
Device for electrolysis from photovoltaically supplied power and a method of operating such a device
The disclosure relates to a device and associated method for electrolysis from photovoltaically generated DC power, including an electrolyzer and a DC/DC converter. The DC/DC converter feeds DC power to the electrolyzer, the DC power is generated by a photovoltaic (PV) sub-generator connected to the DC/DC converter. The PV sub-generator is connected to the DC/DC converter via a first disconnector that is coupled to an isolation monitoring structure in such a way that closure of the first disconnector requires a successful check for sufficient isolation of the PV sub-generator. The PV sub-generator has a main string and a second disconnector arranged between the main string and the first disconnector. The second disconnector is coupled to a fault current monitoring circuit in such a way that the second disconnector is opened in the event that a predefinable limit value of the fault current is exceeded.
H02H 7/20 - 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 electronic equipment
H02H 1/00 - Details of emergency protective circuit arrangements
H02S 40/36 - Electrical components characterised by special electrical interconnection means between two or more PV modules, e.g. electrical module-to-module connection
H02S 50/10 - Testing of PV devices, e.g. of PV modules or single PV cells
46.
METHOD FOR OPERATING A POWER SUPPLY PLANT, AND POWER SUPPLY PLANT
In a method for operating a power supply plant having a plurality of inverters and a plant controller connected to the inverters for communication, the power supply plant has a grid connection, which is connected to an AC voltage grid. Via the grid connection, the inverters exchange electrical interchange powers with the AC voltage grid such that the power supply plant exchanges a total interchange power, composed of the respective electrical interchange powers, with the AC voltage grid. By means of a respective regulator, the inverters adjust their respective interchange powers depending on a respective deviation of a voltage profile of a grid voltage from a respective reference profile with respect to a respective reference frequency and/or depending on a respective voltage amplitude differential between a respective grid voltage and a respective reference voltage. The plant controller influences the regulators of the inverters depending on a power differential between the total interchange power and a specified interchange power. A power supply plant according to the application is designed to carry out this method.
H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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
G05B 19/042 - Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
47.
METHOD FOR SETTING A POWER CLASS OF AN INVERTER, AND INVERTER
The disclosure relates to a method for setting a power class of an inverter, wherein the inverter has a device type plate containing information about the inverter which is device-specific and independent of the selected power class, and wherein the inverter has a class plate which is selected from a plurality of power class-specific class plates each assigned to one power class from a plurality of power classes and contains information about the assigned power class. The method includes capturing an image of the device type plate and the class plate and reading out the device-specific information and the information about the assigned power class from the data captured as an image,—transferring a setting sequence to the inverter, wherein the setting sequence has the information about the assigned power class,—setting the power class of the inverter using the setting sequence following authentication of the read-out information. The disclosure also relates to an inverter having a power class that can be set.
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
G06V 10/94 - Hardware or software architectures specially adapted for image or video understanding
G06V 40/10 - Human or animal bodies, e.g. vehicle occupants or pedestriansBody parts, e.g. hands
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
48.
Method for operating a battery converter, battery converter and system
A described method for operating a battery converter in a system, in which, in addition to the battery converter, an inverter, which is connected to a grid, and a DC load are connected to a common intermediate circuit via a DC bus, includes: —controlling an exchange power of the battery converter using a battery, which is connected to the battery converter, depending on a voltage of the intermediate circuit in accordance with a converter characteristic curve, —identifying a decrease in the intermediate circuit voltage below a rectifying value of the permissible AC voltage of the grid connected to the inverter, and—if the decrease is identified, temporarily shifting the converter characteristic curve so that a maximum discharging power of the battery converter is reached at a value of the intermediate circuit voltage that is above or at the rectifying value. A battery converter, which is configured to carry out the method, and a system having such a battery converter are also described.
The disclosure relates to a housing for a power electronics device, including a tray for receiving power electronics components and a cover for placing on the tray so that a closed housing is formed. The cover is fixed on the tray by a plurality of fixing screws. At least one opening element is provided that is made of one of the fixing screws, each of which is guided through a sleeve with deformation structures. The sleeve is arranged between the screw head of the fixing screw and the housing such that a pressing force is exerted by the screw head between the cover and the tray via the sleeve. The deformation structures are designed such that under the effect of the force of an explosion that exceeds the pressing force, the sleeve is compressed in a manner defined by the deformation structures such that a gap with a specified width is formed between the cover and the tray.
A modular electronic power converter is disclosed and includes a first housing, a second housing, and a coupling element. The coupling element is arranged between the housings and is connected to at least one of the housings via a detent connection.
An inverter includes a battery terminal configured to connect to an electrical storage unit, a load terminal configured to connect to at least one electrical-energy consumer, and a grid terminal configured to connect to a superordinate distribution grid. The inverter also includes a bidirectional inverter bridge connected to the battery terminal, a first switching circuit, and a second switching circuit. The first switching circuit is arranged between the bidirectional inverter bridge and the second switching circuit, and the second switching circuit is arranged between the first switching circuit and the grid terminal. The first switching circuit is configured to enter a first state without a holding current and to switch into a second state with a holding current, and the second switching circuit is configured to be switched over between the first and second states by a signal.
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
H02M 7/797 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
52.
Device and method for detecting a fault current in a photovoltaic installation, and photovoltaic inverter comprising the device
A method is disclosed for stabilizing a DC voltage in a DC grid that includes a DC bus connected to a higher-order grid and to which an energy generating system and at least one load are connected.
A method of detecting a serial arc fault in a DC-power circuit includes injecting an RF-signal with a narrow band-width into the DC-power circuit and measuring a response signal related to the injected RF-signal in the DC-power circuit. The method further includes determining a time derivative of the response signal, analyzing the time derivative, and signaling an occurrence of a serial arc fault in the power circuit based on the results of the analysis. A system for detecting an arc fault is configured to perform a method as described before.
The disclosure relates to an inverter including a first bridge branch with a first phase output, a second bridge branch with a second phase output, a third bridge branch with a third phase output, wherein the phase outputs of the bridge branches can each be connected to a phase conductor of a three-phase power distribution network. The inverter is configured, in a normal operating mode of the three-phase power distribution network and/or of a higher-level power supply network connected thereto, to connect the phase outputs to the relevant phase conductor and, in the event of a fault in the three-phase power distribution network and/or in the higher-level power supply network connected thereto, to disconnect the three-phase power distribution network from the higher-level power supply network via a network disconnector, to disconnect the first phase output from the first phase conductor by means of a switching unit and to connect same to a neutral conductor of the three-phase power distribution network, and to establish a neutral potential for the neutral conductor via the first bridge branch. The disclosure further relates to a method for operating an inverter of this kind.
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
56.
Method for extending a voltage range of a rectifier, rectifier for carrying out the method, and electrolysis system
1(t) with the AC grid is executed during or shortly before an electrical connection or an electrical isolation of the DC load to or from the rectifier circuit.
H02M 7/219 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
C25B 1/04 - Hydrogen or oxygen by electrolysis of water
C25B 9/65 - Means for supplying currentElectrode connectionsElectric inter-cell connections
The application describes a method for operating an electrolyzer to generate hydrogen from water using an electrolysis reaction, supplied with power from an AC grid via an actively controlled rectifier circuit. The method includes operating the electrolyzer in a normal operating mode with an input voltage UEI above a no-load voltage ULL with predominantly ohmic behavior, operating the electrolyzer in a standby operating mode with an input voltage UEI below the no-load voltage ULL with predominantly capacitive behavior, and transitioning from the standby operating mode to the normal operating mode during a first transition duration Δt1, wherein the first transition duration Δt1 is reduced by keeping the input voltage UEI at the electrolyzer input during the standby operating mode above a first voltage threshold value UTH,1 different from 0 V. The application furthermore describes a connection circuit, an actively controlled rectifier circuit and an electrolysis system for performing the method.
C25B 1/04 - Hydrogen or oxygen by electrolysis of water
H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
A device for current determination includes a shunt and a device for temperature measurement including a printed circuit board, an evaluation unit and a temperature sensor. The printed circuit board has a milled groove which runs spirally around the temperature sensor, so that the temperature sensor is arranged on a printed circuit board plateau defined by the milled groove and is displaceable in a direction that is parallel to a normal vector of a plane defined by the printed circuit board. When the temperature sensor is displaced relative to the plane of the printed circuit board, a restoring force is brought about between the printed circuit board and the temperature sensor, wherein the shunt includes a resistance region having a substantially flat surface, wherein the device for current determination is arranged in the resistance region on the surface of the shunt in such a way that the temperature sensor is arranged in thermal connection with the resistance region of the shunt, wherein voltage taps are arranged on both sides of the temperature sensor and electrically contact the surface of the shunt in order to detect a potential difference along the resistance region.
G01K 1/02 - Means for indicating or recording specially adapted for thermometers
G01K 1/024 - Means for indicating or recording specially adapted for thermometers for remote indication
G01K 1/14 - SupportsFastening devicesArrangements for mounting thermometers in particular locations
G01K 1/143 - SupportsFastening devicesArrangements for mounting thermometers in particular locations for measuring surface temperatures
G01K 11/22 - Measuring temperature based on physical or chemical changes not covered by group , , , or using measurement of acoustic effects
G01K 13/02 - Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
G01K 13/20 - Clinical contact thermometers for use with humans or animals
G01R 1/20 - Modifications of basic electric elements for use in electric measuring instrumentsStructural combinations of such elements with such instruments
The disclosure relates to a method for supplying a consumer device with electrical energy from an industrial DC network. The method having includes establishing a connection between an energy storage and the industrial DC network and transferring electrical energy from the DC network to the energy storage. When the connection is established between the energy storage and the industrial DC network, a connection between the energy storage and the consumer device is disconnected and the consumer remains galvanically isolated from the industrial DC network. The method also includes establishing a connection between the consumer device and the energy storage and transferring electrical energy from the storage energy storage to the consumer device. When the connection is established between the consumer device and the energy storage, a connection between the energy storage and the industrial DC network is disconnected and the consumer device remains galvanically isolated from the industrial DC network. The disclosure also relates to a system and an apparatus for supplying a consumer device with electrical energy.
B60L 53/10 - Methods of charging batteries, specially adapted for electric vehiclesCharging stations or on-board charging equipment thereforExchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
In large PV power plants, grounding of individual PV modules may lead to problems. The present invention overcomes such problems. The basis for the invention is a PV power plant comprising one or more PV generators, each comprising a PV string and an inverter with a DC input and an AC output. The PV string comprises at least one PV module and is electrically connected to the DC input of the inverter. The inverter comprises means for controlling the DC potential at the DC input depending on the DC potential at the AC output. The AC outputs of the inverters are coupled in parallel. The novel feature of the invention is that the PV power plant further comprises an offset voltage source, which controls the DC potential at the AC outputs. Thereby, the DC potential at the DC input will be indirectly controlled, and it is thus possible to ensure that the potentials with respect to ground at the terminals of the PV modules are all non-negative or all non-positive without grounding the PV modules. Ground loops can be avoided, and there is no need for the use of transformer-based inverters.
H02J 1/00 - Circuit arrangements for dc mains or dc distribution networks
H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks
H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
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
A circuit arrangement for balancing a split DC link arranged between a first DC-voltage terminal and a second DC-voltage terminal is disclosed. The first DC-voltage terminal is connected via a first semiconductor switch to a first intermediate point that is connected via a second semiconductor switch to a bridge center point that is connected via a third semiconductor switch to a second intermediate point that is connected via a fourth semiconductor switch to the second DC-voltage terminal. A first terminal of a resonant capacitor is connected to the first intermediate point, and a second terminal of the resonant capacitor is connected to a DC-link center point via a connecting path, in which a resonant inductor is arranged in a series circuit with the third semiconductor switch, and which runs via the second intermediate point. An additional winding is magnetically coupled to the resonant inductor and a first terminal thereof is connected via a first diode to a first terminal of a countervoltage source, and a second terminal thereof is connected to a second terminal of the countervoltage source so that an energy coupled into the additional winding from the resonant inductor is discharged into the countervoltage source.
H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
H02M 7/483 - Converters with outputs that each can have more than two voltage levels
62.
Fail-safe operating method for a decentralized power generation plant
A fail-safe operating method for a decentralized power generation plant DG includes determining a leakage capacitance of a generator of the DG before connecting the DG. The method also includes comparing the determined leakage capacitance with a predetermined first limit value, and connecting the DG to a grid only if the determined leakage capacitance is smaller than the predetermined first limit value. A decentralized power generation plant is configured to perform the method.
Disclosed is an electrical unit with a first port configured to be operatively connected to an AC-grid, a second port configured to be operatively connected to an AC-load, and a third port to be operatively connected to an AC-side of a first inverter. The electrical unit includes a first choke arranged between the third port and the second port. The electrical unit is configured to transfer electrical power provided by the first inverter from the third port via the first choke to the second port. The electrical unit is configured to provide grid-forming electrical power to the second port in case of disconnection from the AC-grid at the first port. Further disclosed is a backup power system and a method for operating a backup power system.
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
H02J 9/00 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
64.
Method and circuit arrangement for detecting an arc, and photovoltaic (PV) inverter having a corresponding circuit arrangement
2. Detection of a current I and/or a voltage U in two consecutive active time windows and comparison of the detected values of current I and/or voltage U of the active time window with the corresponding detected values from the preceding active time window can signal an arc if these values of the active time window differ from the corresponding values of the preceding active time window by more than a threshold value.
H02S 50/00 - Monitoring or testing of PV systems, e.g. load balancing or fault identification
G01R 31/66 - Testing of connections, e.g. of plugs or non-disconnectable joints
H02J 3/14 - Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
H02S 40/32 - Electrical components comprising DC/AC inverter means associated with the PV module itself, e.g. AC modules
H02S 40/36 - Electrical components characterised by special electrical interconnection means between two or more PV modules, e.g. electrical module-to-module connection
65.
METHOD FOR SUPPLYING A DC LOAD, ENERGY CONVERSION SYSTEM AND ELECTROLYSIS SYSTEM
The disclosure is directed to a method for supplying power to a DC load using an energy conversion system that includes first and second rectifiers and a transformer system. Each of the rectifiers contains an AC-DC converter connected to an AC grid via a separate secondary side of the transformer system. The transformer system provides a first AC voltage having a first voltage amplitude Û1 on the first secondary side and a second AC voltage having a second voltage amplitude Û2 on the second secondary side, wherein a value of the second voltage amplitude Û2 exceeds a corresponding value of the first voltage amplitude Û1. The method includes operating the first rectifier with a first non-zero power flow P1 to supply power to the DC load when an input voltage UDC,load at the input of the DC load falls below a voltage threshold value UTH: wherein a second power flow P2 through the second rectifier is suppressed, and operating the second rectifier with a second non-zero power flow P2 to supply power to the DC load when the input voltage UDC,load at the input of the DC load reaches or exceeds the voltage threshold value UTH. The application likewise discloses an energy conversion system for performing the method and an electrolysis system.
G01R 31/66 - Testing of connections, e.g. of plugs or non-disconnectable joints
H02J 3/14 - Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
H02S 40/32 - Electrical components comprising DC/AC inverter means associated with the PV module itself, e.g. AC modules
H02S 40/36 - Electrical components characterised by special electrical interconnection means between two or more PV modules, e.g. electrical module-to-module connection
H02S 50/00 - Monitoring or testing of PV systems, e.g. load balancing or fault identification
67.
Changeover device, retrofit kit and method for supplying electrical power to a load
A changeover device for selectively supplying power to at least one load from a grid or a bidirectional inverter includes an input having a grid neutral conductor connection and a grid phase conductor connection for connection to the grid. The changeover device further includes a first output having an inverter neutral conductor connection and an inverter phase conductor connection for connecting the bidirectional inverter, a second output having a load neutral conductor connection and a load phase conductor connection for connecting the load and a switching circuit, the actuator of which is connected to an actuator input of the changeover device. The switching circuit includes a first and a second normally closed contact and a normally open contact that are connected in an interconnection to the grid phase conductor connection, the inverter phase conductor connection, and the load phase conductor connection. An associated method is also disclosed.
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks
H02J 3/32 - Arrangements for balancing the load in a network by storage of energy using batteries with converting means
An inverter with a rated power of at least 3 kVA includes a first assembly which includes a first printed circuit board and a DC/AC converter stage, and a second assembly which includes a second printed circuit board and an EMC filter for the DC/AC converter stage. The first printed circuit board is mounted on a heat sink and lies substantially flat on the heat sink, and the DC/AC converter stage has converter components which comprise power semiconductors, chokes and link circuit capacitors. The chokes and the link circuit capacitors are arranged together on one side of the first printed circuit board, and the heat sink is arranged on the opposite side of the first printed circuit board, and the chokes and/or the power semiconductors are thermally connected to the heat sink via the first printed circuit board and a thermally conductive material arranged between the first printed circuit board and the heat sink. The second printed circuit board is arranged on the side of the first printed circuit board opposite the heat sink, and a metal sheet is arranged between the first assembly and the second assembly, and the second printed circuit board is mounted on the metal sheet.
A method for ascertaining a load flow map within an AC-voltage power supply grid, wherein a plurality of grid subscribers are each arranged at a respective grid connection point in the power supply grid, includes ascertaining, by each of the plurality of grid subscribers, a respective value reflecting an individual phase angle (ϕ) of the AC voltage of the power supply grid at the respective grid connection point of each of the plurality of grid subscribers. The method also includes transmitting the respective values in the form of data from the respective plurality of grid subscribers to a superordinate data receiver; and evaluating the data and generating a load flow map based on the values reflecting the individual phase angles (ϕ).
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
A converter device configured to exchange power between a first grid and a second grid, including a first inverter configured to connect on an AC side thereof to the first grid, and connected on a DC side thereof to a link circuit of the converter device, and a second inverter configured to connect on an AC side thereof to the second grid, and connected on a DC side thereof to the link circuit. The converter device also includes a solar generator connected to the link circuit, a first controller operably coupled to the first inverter and configured to set a specified converter power of the first inverter, and a second controller operably coupled to the second inverter and configured to set a voltage of the link circuit such that a power of the solar generator optimized according to a predetermined criteria.
H02J 3/34 - Arrangements for transfer of electric power between networks of substantially different frequency
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
H02J 3/32 - Arrangements for balancing the load in a network by storage of energy using batteries with converting means
H02M 5/16 - 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 using transformers for conversion of frequency
H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
71.
Method for determining an operating parameter of a PV installation, PV installation having an inverter and inverter for such a PV installation
A method and associated system for determining an operating parameter of a PV installation having a plurality of PV modules is disclosed. The PV modules each include a shutdown apparatus connected to a transmission apparatus of the PV installation and has a feed-in operation and a shutdown operation. At least one PV module is equipped with a power-optimizing device which is configured to set an operating point of the PV module in an optimizing operation. The method includes determining a first total electrical power of the PV modules in a non-optimizing operation of the at least one power-optimizing device and in the feed-in operation of the shutdown apparatuses, and determining a second total electrical power of the PV modules in the optimizing operation of all the power-optimizing devices and in the feed-in operation of the shutdown apparatuses. The method also includes determining the operating parameter using a difference between the determined first total electrical power and the determined second total electrical power.
A method for locking a connection between a connector and a mating connector arranged on an electric vehicle is disclosed. The connector is arranged on a charging cable connected to a charging post of a charging station, such as a charging cable fixedly connected to a charging post of a charging station. The connector is associated with a first locking element, and the mating connector is associated with a second locking element, wherein the first locking element and the second locking element cooperate to lock the connection between the connector and the mating connector, and each have an activated state and a deactivated state. The method includes operating the first locking element associated with the connector in an activated state in a first operating mode of the charging station to lock the connection between the connector and the mating connector when the second locking element associated with the mating connector is activated. The method further includes operating the first locking element associated with the connector in a deactivated state in a second operating mode of the charging station to unlock the connection between the connector and the mating connector when the second locking element associated with the mating connector is activated. Additionally described is a charging station which is suitable and set up for carrying out the method.
H01R 43/26 - Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for engaging or disengaging the two parts of a coupling device
B60L 53/18 - Cables specially adapted for charging electric vehicles
B60L 53/16 - Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
B60L 53/60 - Monitoring or controlling charging stations
73.
METHOD FOR OPERATING AN ENERGY GENERATING SYSTEM, AND ENERGY GENERATING SYSTEM COMPRISING SAID METHOD
The application relates to a method for operating an energy generating system including a plurality of DC sub-generators which are connected in parallel with one another and in each case to a shared DC load via a DC/DC converter. Each of the DC sub-generators includes a DC source which is connected, via at least one fuse that is connected in series to the DC source, to the particular DC/DC converter that is assigned to the corresponding DC sub-generator. The method includes monitoring each of the DC sub-generators for a fault, in particular a short-circuit fault; —wherein, if the monitoring of the DC sub-generators indicates a faulty DC sub-generator; —the DC/DC converters that are not assigned to the faulty DC sub-generator are operated at a common total current IRest which corresponds to a default value. The application also relates to an energy generating system which is designed and configured to carry out the method.
A power converter with an inverter that is configured to transform electrical power between a DC-side of the power converter and an AC-side of the power converter, includes a first port operatively connected to an AC-grid, a second port operatively connected to an AC-load, a third port connected to an external power source, and a fourth port operatively connected to a rechargeable DC-power storage. The power converter includes a DC/DC-converter between the third port and the inverter, to transfer electrical power provided by the external power source from the third port to the inverter. The inverter is configured to be grid forming and provide electrical power to the second port upon a power supply outage at the first port, the power converter includes a control unit to monitor the third port and detect parameters of the electrical power provided via the third port.
H02M 7/44 - Conversion of DC power input into AC power output without possibility of reversal by static converters
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
H02M 3/04 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
75.
Housing for an electrical device having a cover and electrical device having a housing
The disclosure relates to a housing of an electrical device for converting electrical power, including a main body and a cover. The cover closes the main body to define a self-contained interior space, wherein electrical and electronic components of the electrical device are arranged in the interior space of the housing. The cover is connected to the main body via a detchable securing structure, which may be arranged in the geometrical center of the cover. An electrical device has a housing of this type.
The disclosure relates to a platform for the space-saving formation of an energy conversion system. In this, containers are stacked one above the other as housings of components of the energy conversion system with the platform arranged between the containers, wherein the platform has a frame structure which has, on a first side, first alignment elements for placing the platform on a first container and, on a second side, opposite the first side, of the frame structure, second alignment elements for placing a second container on a placement area of the frame structure. The first and second alignment elements are arranged in such a way that they result in an arrangement, which is laterally centered and vertically spaced apart by a height (H) of the platform, of the second container above the first container, wherein the frame structure forms a standing area, which circumferentially surrounds the placement area and is walkable by persons, as access to the second container. An energy conversion system can be designed as a stack of at least two containers as housings of components of the energy conversion system, between each of which containers such a platform is arranged.
E04B 1/348 - Structures composed of units comprising at least considerable parts of two sides of a room, e.g. box-like or cell-like units closed or in skeleton form
E04H 1/12 - Small buildings or other erections for limited occupation, erected in the open air or arranged in buildings, e.g. kiosks, waiting shelters for bus stops or for filling stations, roofs for railway platforms, watchmen's huts or dressing cubicles
A local power supply system having a grid transfer point for the connection of an energy supply grid has a first transmission line for transmitting electrical energy from the grid transfer point to a first terminal for connecting an arrangement of consumers, and a second transmission line for transmitting electrical energy between the grid transfer point and a second terminal for connecting an arrangement of energy stores. A first disconnector is arranged in the first transition line between the grid transfer point and the first terminal, and a second disconnector is arranged in the second transmission line between the grid transfer point and the second terminal. A coupling device, which electrically connects the first terminal and the second terminal, has a first switch and a second switch connected in series thereto, wherein a coupling element is arranged between the two switches connected in series, which coupling element has a grounding apparatus, a phase connection apparatus, a neutral conductor connection apparatus, a connection to a diesel generator and/or an apparatus for generating a neutral conductor potential. The disclosure also relates to a method for operating such a system.
H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks
H02J 3/32 - Arrangements for balancing the load in a network by storage of energy using batteries with converting means
H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
78.
Regulating method for a decentralized energy generating system, and decentralized energy generating system
A method for regulating a decentralized energy generating system with a plurality of inverters (IN) is disclosed. The method includes receiving at the PPC a detected active power, reactive power and voltage amplitude at a grid connection point (PCC) of the energy generating system; and regulating, in a normal operating mode of the energy generating system, the reactive power and the active power to target values stipulated by a grid operator by virtue of the central control unit (PPC) dividing the stipulated target values into individual target stipulations for the plurality of inverters (IN) and communicating individual target stipulations to the inverters (IN). The method further includes selectively changing to a special operating mode of the energy generating system if particular criteria are present at the grid connection point (PCC) in a stipulated time interval. In the special operating mode, the central control unit (PPC) effects a reduction of the active power provided at the grid connection point (PCC) compared to the stipulated target values.
H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
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
H02J 3/46 - Controlling the sharing of output between the generators, converters, or transformers
79.
Method for determining a characteristic curve of a photovoltaic (PV) string, DC/DC converter, and photovoltaic system suitable for carrying out the method
H02S 40/32 - Electrical components comprising DC/AC inverter means associated with the PV module itself, e.g. AC modules
H02S 40/36 - Electrical components characterised by special electrical interconnection means between two or more PV modules, e.g. electrical module-to-module connection
H02M 3/139 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators with digital control
80.
SOLAR MODULE, SOLAR MODULE-INTEGRABLE ASSEMBLY AND POWER GENERATION SYSTEM
The disclosure relates to a solar module, which includes a plurality of solar cells which are interconnected to generate a direct-voltage power at module terminals, and a receiving unit for receiving an accurate time signal. The solar module further includes a communication unit for the synchronous transmission of the received accurate time signal to an inverter. The inverter is connected to the solar module by means of direct-voltage lines. The disclosure also relates to an assembly that can be integrated into a solar module, and to an energy generation system having a solar module of this type.
A relay arrangement includes at least two series-connected relays, which are mechanically and electrically connected to a main printed circuit board via first terminals and second terminals, and at least one flat conductor for conducting current between the at least two series connected relays. The flat conductor is mechanically connected to the main printed circuit board and electrically and thermally connected to the first terminals of the relays, and the at least one flat conductor is configured to dissipate heat produced during operation of the relays.
H01H 47/00 - Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
H01B 7/42 - Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
A battery inverter system includes a plurality of battery inverter units, wherein each of the battery inverter units includes a multiphase inverter and a battery unit connected to the inverter on the DC side. The battery unit includes a plurality of individual units connected in parallel to one another and protected against overcurrent by means of rack fuses, and the battery inverter units are connected in parallel on the AC side and are configured to operate with a common drive pulse pattern. The battery inverter units are interconnected on the DC side via compensation fuses, wherein the compensation fuses are provided such that in the event of a short circuit in one of the inverters, the compensation fuses are triggered faster than the rack fuses.
H02J 3/32 - Arrangements for balancing the load in a network by storage of energy using batteries with converting means
H02M 7/493 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode the static converters being arranged for operation in parallel
H02M 1/32 - Means for protecting converters other than by automatic disconnection
H02H 7/26 - Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occurred
83.
Method for three-phase supply into an alternating voltage network, and three-phase inverter
A method for three-phase infeed of electrical power from a DC source into a three-phase AC grid by means of an inverter includes measuring phase-specific grid voltages of the three-phase AC grid, and determining a grid frequency from the measured phase-specific grid voltages. The method also includes generating phase-specific voltage reference values from the phase-specifically measured grid voltages and the determined grid frequency, and generating phase-specific target current values using phase-specific predetermined target current amplitude values, the phase-specific voltage reference values and respective grid voltage amplitudes.
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
H02J 3/26 - Arrangements for eliminating or reducing asymmetry in polyphase networks
84.
Method and device for approximately determining voltages at a high-voltage side of a transformer
The disclosure relates to a method and related device for approximately determining voltages at a high-voltage side of a transformer on the basis of measured voltages at a low-voltage side of the transformer. The method includes measuring delta voltages and phase voltages and phase angles at the low-voltage side of the transformer, transforming the phase voltages and phase angles into positive and negative phase sequence system voltages and phase angles of the positive and negative phase sequence systems, respectively, at the low-voltage side, determining positive and negative phase sequence system voltages and phase angles of the positive and negative phase sequence systems, respectively, at the high-voltage side from the positive and negative phase sequence system voltages and phase angles of the positive and negative phase sequence systems, respectively, at the low-voltage side, determining estimated values of a zero phase sequence system voltage and of a phase angle of a zero phase sequence system at the high-voltage side from the measured delta voltages and phase voltages and phase angles at the low-voltage side, and transforming the positive, negative and zero phase sequence system voltages and the phase angles into phase voltages and/or delta voltages at the high-voltage side of the transformer.
A method for switching off power semiconductor switches in a bridge circuit having first through sixth power semiconductor switches. The method includes a switch-off process for establishing a final switch configuration in which all power semiconductor switches in the bridge circuit are in a switched-off state. Over the course of the switch-off process, a switch configuration is established in which the fifth power semiconductor switch and the sixth power semiconductor switch are concurrently in a switched-on state, while the first power semiconductor switch and the fourth power semiconductor switch are in a switched-off state. Also disclosed is a bridge circuit having a control circuit configured to carry out such a method. In addition, an inverter that includes at least one bridge circuit of this type is also provided.
H02M 7/521 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only in a bridge configuration
86.
Power electronics device and method for supplying electrical voltage to a driver circuit of a power semiconductor switch
A power electronics device has a first power semiconductor switch and a driver circuit and enables a supply of electrical voltage to a driver circuit. An auxiliary circuit arrangement has a supply capacitor, an auxiliary capacitor, a normally off auxiliary semiconductor switch, a diode and a bootstrap diode. The auxiliary semiconductor switch is connected to a reference potential connection of the first power semiconductor switch via a connection point, starting from the connection point, a series connection of the diode, a second connection point and the auxiliary capacitor is arranged in parallel with the auxiliary semiconductor switch. When the auxiliary semiconductor switch is in the off state, the auxiliary capacitor is charged by the flow of current through the first power semiconductor switch.
H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
A method provides current limitation in the event of transient voltage variations at an AC output of a multilevel inverter that includes a bridge circuit with a first DC input, a second DC input, a neutral terminal and a bridge output, as well as a line filter with a choke connected between the bridge output and the AC output, and a capacitor connected between the AC output and the neutral terminal. In the method, depending on the voltage at the capacitor, when a first current threshold is exceeded by the choke current, a regular operating mode is interrupted and measures for current limitation are initiated. A multilevel inverter is further disclosed including a control circuit that is configured to carry out such a method.
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
88.
Energy supply sub-system for an energy supply system, energy supply system, and method for providing same
A container for an energy supply system includes a first section configured to accommodate an air-conditioning unit and/or a control circuit during transport of the container and operation of the energy supply system, and a second section configured to accommodate an energy conversion unit during transport of the container. The energy conversion unit is configured to be selectively removed from the container, and the second section includes a fixing structure for shelf units, such that, after the energy conversion unit has been removed from the container, the shelf units are configured to be installed on the fixing structure and can be fitted with storage modules.
H01M 10/663 - Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an air-conditioner or an engine
H01M 50/204 - Racks, modules or packs for multiple batteries or multiple cells
89.
Method of and system for detecting a serial arc fault in a power circuit
A method of detecting a serial arc fault in a DC-power circuit includes injecting an RF-signal with a narrow band-width into the DC-power circuit and measuring a response signal related to the injected RF-signal in the DC-power circuit. The method further includes determining a time derivative of the response signal, analyzing the time derivative, and signaling an occurrence of a serial arc fault in the power circuit based on the results of the analysis. A system for detecting an arc fault is configured to perform a method as described before.
An energy generation system provides balancing power for an AC voltage grid, and comprises a photovoltaic generator and an energy store, wherein the energy generation system exchanges a total electrical power with the AC voltage grid (1), wherein the total power exchanged is set as a function of a current maximum PV power, a predefinable basic PV power between zero and the maximum PV power and a provided or requested balancing power. When no balancing power is requested: a total basic power, which comprises the basic PV power can be fed in; When a negative balancing power is requested: the PV power can be reduced compared to the basic PV power; When a positive balancing power is requested: a battery power can be drawn from the energy store if the requested positive balancing power is greater than the difference between the maximum PV power and the basic PV power.
A method for operating an electrolysis device, having a converter which is connected on an AC voltage side to an AC voltage grid via a decoupling inductance and draws an AC active power from the AC voltage grid, and an electrolyzer, which is connected to the converter on the DC voltage side, is provided. The method includes operating the electrolysis device, when a grid frequency corresponds to a nominal frequency of the ACT voltage grid and is substantially constant over a time period, with an electrical power which is between 50% and 100% of a nominal power of the electrolyzer, and operating the converter in a voltage-impressing manner, such that an AC active power drawn from the AC voltage grid is changed on the basis of a change and/or a rate of change of the grid frequency in the AC voltage grid.
A system for distributing locally generated energy from at least one renewable DC source to a plurality of local load units of the system, including, for each load unit: an input terminal configured to connect to a grid, and an output terminal configured to connect to at least one load. Further for each load the system includes an inverter including an inverter input and an inverter output, wherein the inverter input is connected to the at least one renewable DC source and the inverter output is connected to the input terminal and to the output terminal of the respective load unit, and wherein the inverter is configured to convert a direct current at the inverter input into an alternating current at the inverter output. The system also includes a power meter including a power meter input connected to the input terminal of the respective load unit, wherein the power meter is configured to determine a current power consumption from the grid, and wherein the power meter includes a power meter output connected to the inverter of the respective load unit, and wherein the power meter is configured to transmit data relating to the current power consumption from the grid to the inverter. The inverter of the respective load unit is configured to determine an input DC voltage applied to its inverter input and to determine a power to be currently converted from the applied input DC voltage and the current power consumption data transmitted thereto.
A method for measuring insulation resistance in an inverter that has a DC link circuit and a bridge circuit, connected to the DC link circuit, for driving an AC current via a bridge center tap is disclosed. The method includes connecting the bridge center tap to a grounding point, successively connecting, by way of the bridge circuit, the bridge center tap that is connected to the grounding point to two points of the ungrounded DC link circuit that differ in terms of voltage, and measuring the current flowing from the two points that differ in terms of voltage to the grounding point. The two points of the ungrounded DC link circuit that differ in terms of voltage are selected from a group of points that includes at least one intermediate voltage point of the DC link circuit in addition to two end points of the DC link circuit, such that the voltages present between the two points that differ in terms of voltage and the grounding point do not exceed a predefined voltage limit value.
A method for identifying an assignment of phase lines of an electrical distribution grid to connections of an electrical device capable of unbalanced-load operation, wherein the device is connected to a plurality of phase lines of the electrical distribution grid, includes setting target parameters assigned to an unbalanced load profile at each of the connections of the electrical device, detecting a temporal profile of a measurement parameter on each of the plurality of phase lines using a detection circuit, comparing the detected temporal profiles of the measurement parameters with the target parameters of the unbalanced load profile for each of the plurality of phase lines, respectively, and identifying the assignment of the phase lines to the connections on the basis of the comparison.
G01R 31/67 - Testing the correctness of wire connections in electric apparatus or circuits
G01R 31/69 - Testing of releasable connections, e.g. of terminals mounted on a printed circuit board of terminals at the end of a cable or a wire harnessTesting of releasable connections, e.g. of terminals mounted on a printed circuit board of plugsTesting of releasable connections, e.g. of terminals mounted on a printed circuit board of sockets, e.g. wall sockets or power sockets in appliances
H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks
H02J 3/26 - Arrangements for eliminating or reducing asymmetry in polyphase networks
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
G01R 19/25 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
95.
Method of and system for detecting a serial arc fault in a power circuit
A method of detecting a serial arc fault in a DC-power circuit includes injecting an RF-signal with a narrow band-width into the DC-power circuit and measuring a response signal related to the injected RF-signal in the DC-power circuit. The method further includes determining a time derivative of the response signal, analyzing the time derivative, and signaling an occurrence of a serial arc fault in the power circuit based on the results of the analysis. A system for detecting an arc fault is configured to perform a method as described before.
A method of repowering a photovoltaic power plant from a first configuration is described, wherein in the first configuration, a pair of combiners is connected in series between two homeruns via a PV tie device. The combiners are configured to combine DC power produced by solar generators respectively connected thereto and provide the combined DC power at outputs thereof, and the PV tie device is configured to couple a midpoint potential of the series connected combiners to ground during operation of the power plant. The homeruns transmit the combined DC power to an old inverter for conversion into AC power for feeding into an AC grid connected to the old inverter. The method includes removing the PV tie device and interconnecting the combiner outputs by an interconnection structure with no coupling to ground, introducing at least one galvanically isolating DC/DC-converter for each combiner of the pair of combiners such that the homeruns are galvanically isolated from any of the solar generators, coupling one terminal of each of the respective solar generators to ground, and replacing the old inverter by a new inverter. The new inverter is configured to vary the potential on the homeruns relative to ground during operation of the power plant. A repowering kit is also described.
H02S 40/32 - Electrical components comprising DC/AC inverter means associated with the PV module itself, e.g. AC modules
H02S 50/10 - Testing of PV devices, e.g. of PV modules or single PV cells
H02S 40/36 - Electrical components characterised by special electrical interconnection means between two or more PV modules, e.g. electrical module-to-module connection
H02S 40/34 - Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
A disclosed intermediate circuit arrangement includes first and second partial circuit boards of identical design having a series circuit of at least two capacitor banks. The partial circuit boards each have a terminal strip having a positive intermediate circuit connection, a negative intermediate circuit connection, and a central connection. The circuit arrangement also includes a connecting circuit board for electrically connecting the respective connections of the terminal strips of the two partial circuit boards to one another. The connecting circuit board is a multi-layer circuit board with two outer metal layers and at least two inner metal layers arranged between the outer metal layers. The outer metal layers have an electric connection between corresponding connections of the terminal strips of the two partial circuit boards, and at least one first metal layer of the inner metal layers has only an electrical connection of the positive intermediate circuit connections of the two partial circuit boards and at least one second metal layer of the inner metal layers has only an electrical connection of the negative intermediate circuits of the two partial circuit boards. The intermediate circuit arrangement can be part of an inverter.
H02M 7/53 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
H05K 3/36 - Assembling printed circuits with other printed circuits
98.
Electrical or electronic device comprising a housing with two regions shielded electromagnetically from each other
An electrical or electronic device with a housing which includes a rear wall and a side wall peripherally surrounding the rear wall, contains a first region and a second region. The first region includes a shielding from the second region with respect to electromagnetic compatibility (EMC). The housing includes a stepped projection on an inner side of the side wall and/or of the rear wall. The shielding for electromagnetic compatibility includes a shielding plate, by means of which the first region is delimited from the second region. An electrical connection of the shielding plate to the side wall and/or to the rear wall is formed in that a peripheral region that delimits the shielding plate areally overlaps the stepped projection, at least along most of its length, and is fastened on it.
To operate electrical devices, power consumptions of all the electrical devices are continually captured and assigned to the individual electrical devices and at least one desired result is achieved by virtue of at least a first control instance of the electrical devices, the operation of which helps to achieve a desired result, and a second control instance of the electrical devices, the operation of which likewise helps to achieve the desired result. The devices are operated in a coordinated fashion. To this end, measured values from multiple measured value transmitters are captured by operating the multiple electrical devices. Correlations between changes in the measured values of the individual measured value transmitters over time and changes in the power consumptions of the individual electrical devices over time are determined and the desired result is selected from a subgroup of results.
H02J 3/14 - Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks
G01R 21/133 - Arrangements for measuring electric power or power factor by using digital technique
H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
100.
Power-electronic device comprising a transformer unit and method
The disclosure relates to a power electronics device having at least two inverters and a transformer apparatus having a core arrangement, at least one primary winding and at least one secondary winding that wind around the core arrangement at least in sections.
patents
