An electric motor with stator-side bar windings comprises a number of inverters for controlling the bars, wherein: the inverters are mounted on one or more circuit boards, the circuit boards are mounted on at least one cooling plate, and at least one heat pipe is provided and its evaporator side is located in the cooling plate and its condenser side is located outside the cooling plate.
H02K 9/22 - Dispositions de refroidissement ou de ventilation par un matériau solide conducteur de la chaleur s'encastrant dans, ou mis en contact avec, le stator ou le rotor, p. ex. des ponts de chaleur
2.
METHOD AND DEVICE FOR USING A DATA MODEL TO MONITOR AND ASSESS A BELT CONVEYOR
A data model (3) is used in a method for analysing a belt conveyor (1), wherein the data model (3) relates to a digital image of the belt conveyor (1), wherein a first function value (45) of the belt conveyor (1) is determined, wherein the first function value (45) and a second function value (46) are used to analyse the belt conveyor, wherein the second function value (46) relates to the belt conveyor (1) or to a further belt conveyor (2), wherein the function values (45, 46) are determined in an interval of time, or wherein the function values (45, 46) relate to different belt conveyors (1, 2). As a result of the described standardization, it is possible to create a benchmark for assessing the performance of a belt conveyor as well as for assessing the performance of belt conveyors with a similar transport task.
An electric motor having stator-side bar windings comprises a plurality of inverters for controlling the bars, wherein: the power components of the inverters are arranged on one or more circuit boards, and the circuit boards form at least two circular or annular structures that are axially off-set from each other; the circuit boards are electrically connected by means of a connecting printed circuit board; the connecting printed circuit boards extend axially and are plugged onto the circuit boards on the outer circumference and the inner diameter of the circular and annular structures, respectively.
H02K 3/04 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p. ex. avec des conducteurs en barre
H02K 9/22 - Dispositions de refroidissement ou de ventilation par un matériau solide conducteur de la chaleur s'encastrant dans, ou mis en contact avec, le stator ou le rotor, p. ex. des ponts de chaleur
H02K 11/33 - Circuits d’entraînement, p. ex. circuits électroniques de puissance
An electric motor having stator-side bar windings comprises a plurality of inverters for controlling the bars, wherein: the power components of the inverters are arranged on one or more circuit boards, and the circuit boards form at least one circular or annular structure; the circuit boards are electrically connected by means of a connecting printed circuit board; and the connecting printed circuit board is annular and is plugged onto the circuit boards.
H02K 3/04 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p. ex. avec des conducteurs en barre
H02K 9/22 - Dispositions de refroidissement ou de ventilation par un matériau solide conducteur de la chaleur s'encastrant dans, ou mis en contact avec, le stator ou le rotor, p. ex. des ponts de chaleur
H02K 11/33 - Circuits d’entraînement, p. ex. circuits électroniques de puissance
An electric motor with stator-side bar windings comprises a number of inverters for controlling the bars, wherein: the inverters are mounted on one or more circuit boards, the circuit boards are mounted on at least one cooling plate, and the cooling plates are attached directly to the bars or to bar-shaped current conductors attached to the bars. Between the stator/rotor block and the cooling plates the bars or the current conductors have cooling channels resting against the exterior of the bars or current conductors.
The invention relates to a brake adjuster (1) for a modular multilevel converter (5), having a resistor (3), a first switching group (21) and also a first connection point (11) and a second connection point (12). To improve the usability of the brake adjuster in a converter, it is proposed that the brake adjuster (1) also has a second switching group (22), the first switching group (21) and the second switching group (22) each having at least one sub-module (2), the first switching group (21) being arranged between the resistor (3) and the first connection point (11) and the second switching group (22) being arranged between the resistor (3) and the second connection point (12) in such a way that the first switching group (21), the resistor (3) and the second switching group (22) form an electrical series circuit (40) between the first connection point (11) and the second connection point (12). The invention furthermore relates to a modular multilevel converter (5) comprising a brake adjuster (1) of this kind. The invention also relates to a converter assembly (6) having a modular multilevel converter (5) and a feed device (61), the feed device (61) comprising at least one diode rectifier (62). The invention also relates to a method for operating a brake adjuster (1) of this kind, a modular multilevel converter (5) of this kind, or a converter assembly (6) of this kind, with all sub-modules (2) of the brake adjuster (1) being switched on simultaneously for rapid reduction of a braking current.
H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
H02M 7/483 - Convertisseurs munis de sorties pouvant chacune avoir plus de deux niveaux de tension
H02M 7/757 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continuTransformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif avec possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type thyratron ou thyristor exigeant des moyens d'extinction utilisant uniquement des dispositifs à semi-conducteurs
8.
ATTACHMENT COOLER OF A DYNAMO-ELECTRIC MACHINE WITH PLATE COOLERS
The invention relates to an attachment cooler (4) of a dynamo-electric machine (5) that has a stator (17) with a winding system and a rotor (18) rotatably mounted about an axis (7), - wherein the attachment cooler (4) is designed as a heat exchanger which has a primary circuit (2) and a secondary circuit (3) which is separate therefrom in terms of flow, - wherein the attachment cooler (4) has a casing (15) with receiving openings (22) into which exchangeable modules (1) which are designed as plate heat exchangers can be inserted, - wherein the casing (15) of the attachment cooler (4) has a, in particular an axially parallel, central channel (20) of the secondary circuit (3), which channel runs in particular in the centre of the casing (15), and a waste air channel (38) of the secondary circuit (3) leads out of the side of the housing (15), in particular perpendicular to a supply-air channel (37).
H02K 1/20 - Parties fixes du circuit magnétique avec des canaux ou des conduits pour l'écoulement d'un agent de refroidissement
H02K 9/10 - Dispositions de refroidissement ou de ventilation par un agent de refroidissement gazeux circulant en circuit fermé, dont une partie est à l'extérieur de l'enveloppe de la machine
H02K 9/18 - Dispositions de refroidissement ou de ventilation dans lesquels l'agent de refroidissement gazeux circule entre l'enveloppe de la machine et une chemise extérieure dans lesquels la partie extérieure du circuit fermé comprend un échangeur de chaleur associé structurellement à l'enveloppe de la machine
9.
SOLUTION PREVENTING PERMANENT DEFORMATION IN AN ARC FAULT EVENT OR SHORT CIRCUIT EVENT
An electric device (100) includes an arc quenching device (140), an arc fault rated cabinet (120) rated to resist an electric arc or short circuit, and an elastic support structure (200) configured to absorb energy based on electrodynamic forces in an arc fault event or a short circuit event. Further, an electric system and a method of calculating elasticity of an elastic beam (200-A, 200-B) configured to absorb energy of electrodynamic forces are described.
An electric drive, particularly a low-voltage, high current electric drive featuring bars as field conductors has first inverters arranged at a first axial end of the stator and second inverters arranged at a second axial end of the stator, the second axial end being opposite the first axial end.
An electric machine includes a stator and a housing. The stator includes a laminated stator core and a first stator¬ side coupling element located at a height of an axis of the electric machine in an area of the laminated core. The first stator-side coupling element includes a first slot. The stator includes annular stator elements accommodating the first stator-side coupling element. The housing includes a first housing-side coupling element located at the height of the axis of the electric machine in an area of the laminated core and having a second slot. Screw connections provide a connection between the first stator-side coupling element and the first housing-side coupling element, and a key forms part of the connection between the first stator-side coupling element and the first housing-side coupling element. The stator is aligned in relation to the housing by at least two keys.
The invention relates to a method (PRC) for monitoring the operation of a machine (MCH), in particular of a motor (ENG) or electrically driven motor (EEG). To improve the monitoring, the method proposes a method of this type comprising the following steps: c) training phase (TPH): i. providing training data (TDT) comprising state variables (PHC) of multiple operating points (OPP) of the machine (MCH), ii. recognizing and combining operating points (OPP) in the training data (TDT) through clustering (CLS) to form operating-point clusters (OCL), iii. training a classifier (CLF), which assigns operating points (OPP) to the recognized operating-point clusters (OCL), iv. training an anomaly recognition model (ARM) for recognizing operating anomalies, d) application phase: i. recording operating data (OPD) comprising state variables (PHC) of operating points (OPP) of the machine (MCH) in an operating state, ii. assigning the operating data (OPD) to the operating-point clusters (OCL) using the classifier (CLF), recognizing operating anomalies using the anomaly recognition model (ARM).
An electric machine includes a housing and a stator. The housing includes a double-walled bearing receptacle for receiving a bearing. A segmented ring adapter fastens the bearing to the housing. The electric machine has, in addition to the stator, a first stator-side coupling element and the housing has a first housing-side coupling element, wherein the first stator-side coupling element and the first housing-side coupling element are located at an axial height of the electrical machine in a region of a stator laminated core of the stator.
A multilevel converter (300, 310) includes a plurality of power cells (302, 304) receiving power from a source and supplying power to multiple output phases (U, V, W), wherein each output phase (U, V, W) includes a high voltage power cell (302) that is designed to output more than three voltage levels.
An electric system (100) includes a plurality of electric devices (110), each electric device (110) having a cabinet (112), a common power source (130), each electric device (110) being electrically coupled to the common power source (130), wherein a first electric device (110-1) includes an arc fault rated cabinet (112-1) and an arc quenching device (114), and wherein, in an event of an electric arc occurring in any of the plurality of electric devices (110), energy of the arc is transferred to the first electric device (110-1) and the arc quenching device (114) activated.
A regenerative drive system includes a plurality of power cells receiving power from a source and supplying power to one or more output phases, wherein each power cell is operable in multiple operation modes, each power cell including multiple switching devices including active front-end switching devices, and a central control system controlling operation of the plurality of power cells, wherein the central control system is configured to control the active front-end switching devices of each power cell with variable conduction angles in the multiple operation modes.
H02M 1/12 - Dispositions de réduction des harmoniques d'une entrée ou d'une sortie en courant alternatif
H02M 5/14 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant alternatif, p. ex. pour changement de la tension, pour changement de la fréquence, pour changement du nombre de phases sans transformation intermédiaire en courant continu par convertisseurs statiques utilisant des transformateurs pour la transformation entre des circuits à nombre de phases différent
H02M 7/219 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs dans une configuration en pont
H02M 7/49 - Combinaison des formes de tension de sortie d'une pluralité de convertisseurs
H02M 7/797 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continuTransformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif avec possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
H02M 7/81 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continuTransformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif avec possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande agencés pour la marche en parallèle
A rotor of a rotary dynamoelectric machine incudes a magnetically conductive body, having substantially axially running slots distributed around the circumference. A squirrel cage includes electrical conductors which are arranged in the slots. The electrical conductors are electrically contacted at the two end faces of the rotor by short-circuit rings. The magnetically conductive body includes a base body and at least two further additional bodies, which axially adjoin the base body. A first one of the at least two additional bodies directly axially adjoins the end face of the base body, and a second one of the at least two additional bodies and optionally any further additional body axially adjoin the first additional body. The slots have radially exposed slot portions in the axial end regions of the rotor such that the conductors can be moved radially outward.
A variable frequency drive system includes a power converter with a plurality of power cells supplying power to one or more output phases, each power cell having multiple switching devices incorporating semiconductor switches; a plurality of sensors monitoring values of the power converter; and a control system in communication with the power converter and controlling operation of the plurality of power cells, the control system comprising a processor configured via executable instructions to access a first reduced order model of the power converter; receive the values provided by the plurality of sensors; analyze the values in connection with the first reduced order model to determine one or more operating modes; and output one or more determined operating modes of the power converter.
H02M 7/00 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continuTransformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif
H02M 7/525 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type thyratron ou thyristor exigeant des moyens d'extinction utilisant uniquement des dispositifs à semi-conducteurs avec commande automatique de la forme d'onde ou de la fréquence de sortie
H02M 7/529 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type thyratron ou thyristor exigeant des moyens d'extinction utilisant uniquement des dispositifs à semi-conducteurs avec commande automatique de la forme d'onde ou de la fréquence de sortie par modulation de largeur d'impulsions utilisant une commande numérique
H02M 7/5387 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p. ex. onduleurs à impulsions à un seul commutateur dans une configuration en pont
H02M 7/539 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p. ex. onduleurs à impulsions à un seul commutateur avec commande automatique de la forme d'onde ou de la fréquence de sortie
H02M 7/758 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continuTransformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif avec possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type thyratron ou thyristor exigeant des moyens d'extinction utilisant uniquement des dispositifs à semi-conducteurs avec commande automatique de la forme d'onde ou de la fréquence de sortie
The invention relates to an electrical feedthrough (1) for a pressure housing (3). The electrical feedthrough (1) comprises two feedthrough elements (5, 6), which each run in a straight line along an element axis (5.1, 6.1) between a first element end portion (5.2, 6.2) and a second element end portion (5.3, 6.3) and the outer shape and dimensions of which are substantially the same, and a connection element (8), which is releasably connected to feedthrough elements (5, 6) arranged one on each of two opposite sides. The connection element (8) comprises at least one electrical connection conductor (25), and at least one feedthrough element (5, 6) comprises an electrical feedthrough conductor (22) for each connection conductor (25), each of which feedthrough conductors runs along the element axis (5.1, 6.1) of the feedthrough element (5, 6) and bears against the connection conductor (25).
Method, device and computer program for managing units of bulk material of an ore mine with a throughput of a few tons of bulk material per minute, wherein a material property of each unit, in particular on a conveyor system, is determined, an entry for each unit containing the respective material property of the unit and the position of each unit are stored in a database, and additional includes at least one (i) determining a transport path downstream for the each unit based on the respective entry in the database, (ii) adapting the subsequent processing of each unit based on the material property of the unit, and creating a virtual model of the repository if a unit is supplied to a repository, where a position of each unit is stored, together with its respective material property, in the database.
An integrated air cooling and arc resistant system is provided for a voltage drive. The system comprises a cabinet including a back, an upper portion and a lower portion. The system further comprises a plurality of power cells disposed in the cabinet. The system further comprises a central chimney vertically disposed in the cabinet. The system further comprises a transformer disposed in the cabinet and being underneath the plurality of power cells. The transformer has a top end and a bottom end. The system further comprises a vertical plenum disposed in the back of the cabinet. The vertical plenum is configured to flow cool air passing from the plurality of power cells towards the bottom end of the transformer.
A method for controlling multiple switching devices (15a-d, 75a-b) of a multilevel converter (1, 70) includes providing a plurality of carrier signals (C1-C6) and a reference signal (34, 80), the reference signal (34, 80) having a waveform range divided in a plurality of contiguous bands (B1-B6), dynamically allocating the plurality of carrier signals (C1-C6) to the multiple switching devices (15a-d, 75a-b), and generating pulse width modulation signals (18, 77) to generate switching events of the multiple switching devices (15a-d, 75a-b) based on a comparison of dynamically allocated carrier signals (C1-C6) with the reference signal (34, 80), wherein the plurality of carrier signals (C1-C6) have a phase shift between the carrier signals (C1-C6), and wherein the plurality of carrier signals (C1-C6) are dynamically allocated to the multiple switching devices (15a-d, 75a-b) such that for each switching device (15a-d, 75a-b) the plurality of carrier signals (C1-C6) are rotated and selected based on a position of the reference signal (34, 80) with respect to the plurality of bands (B1-B6).
H02M 1/12 - Dispositions de réduction des harmoniques d'une entrée ou d'une sortie en courant alternatif
H02M 7/49 - Combinaison des formes de tension de sortie d'une pluralité de convertisseurs
H02M 7/5395 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p. ex. onduleurs à impulsions à un seul commutateur avec commande automatique de la forme d'onde ou de la fréquence de sortie par modulation de largeur d'impulsions
23.
METHOD FOR OPERATING A SYSTEM, SYSTEM AND COMPUTER PROGRAM PRODUCT
In a method for operating a system, a first vibration is imparted to a component of the system and the first vibration of the component is detected by a sensor. The sensor generates a sensor signal for transmission to a control device, which analyzes the sensor signal and determines whether a buildup is present on the component based upon the analysis of the sensor signal. A second vibration is imparted to the component to remove the buildup when the buildup has been detected.
B02C 17/18 - Désagrégation au tonneau, c.-à-d. par des appareils constitués par une cuve où les produits à désagréger sont chargés, avec ou sans éléments particuliers de désagrégation tels que billes ou boulets Parties constitutives
B02C 23/00 - Procédés auxiliaires, dispositifs auxiliaires ou accessoires spécialement adaptés au broyage ou à la désagrégation non prévus dans les groupes ou non adaptés spécialement aux appareillages couverts par un seul des groupes
B02C 25/00 - Systèmes de commande spécialement adaptés au broyage ou à la désagrégation
B65D 88/66 - Grands réceptacles caractérisés par des moyens pour faciliter le remplissage ou le vidage en empêchant la formation de ponts par des dispositifs à vibration ou à chocs
B65D 90/48 - Aménagements des dispositifs indicateurs ou de mesure
24.
METHOD AND DEVICE FOR DETACHING AN ADHERING CHARGE FROM THE INNER SIDE OF A GRINDING PIPE OF A TUBE MILL
85871043ABSTRACTIn a method for detaching a frozen charge from an inner wall of a grinding tube of a tube mill, a motor of a drive system is operated in a first mode to rotate the grinding tube for grinding. In a second mode, the motor of the drive system is operated to remove the frozen charge from the inner wall of the grinding tube such that operation of the motor to effect a rotational movement of the grinding tube is repeatedly disturbed by a disturbance signal to cause a repeated disturbance within a variable time interval, with the time interval of the repeated disturbance being shortened.Date Recue/Date Received 2020-11-05
B02C 17/18 - Désagrégation au tonneau, c.-à-d. par des appareils constitués par une cuve où les produits à désagréger sont chargés, avec ou sans éléments particuliers de désagrégation tels que billes ou boulets Parties constitutives
A drive device for a working machine for heavy industry, particularly for the raw-materials and mining industry, includes a permanent-magnet-excited motor and a frequency converter, wherein the motor has a rotor and a stator, and wherein the motor is a segment motor, in the case of which the rotor and/or the stator is composed of a plurality of segments, where considerable improvement in the availability of the motor is achieved because the motor has a segmented design, whereby the reliability during operation of the drive device is also increased.
In a method for actuating a motor for starting up a mill containing material to be ground, the motor for triggering sedimentation of the material to be ground in the mill is initially fed by a first inverter. The motor is subsequently disconnected from the first inverter, and in a further step the motor is connected to a first supply which has a first supply voltage. The maximum output voltage of the first inverter is lower than the first supply voltage.
B02C 25/00 - Systèmes de commande spécialement adaptés au broyage ou à la désagrégation
H01P 1/30 - Dispositifs de compensation des effets de la température ou de l'humidité ou de protection contre ces effets
H02P 27/048 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de tension d'alimentation utilisant une tension d’alimentation à fréquence variable, p. ex. tension d’alimentation d’onduleurs ou de convertisseurs utilisant une alimentation en courant alternatif pour le circuit rotorique uniquement ou pour le circuit statorique uniquement
A method for starting a grinding tube with an assigned drive device, wherein during the operation of the grinding tube a grinding mode and a charge release mode can be set such that a particularly reliable monitoring of the state of charge located in the grinding tube is ensured, where the grinding tube is rotated and, at a first rotational angle, a first actual torque is detected, a setpoint torque is calculated for a second, relatively large rotational angle based on the first actual torque, an actually occurring, second actual torque is detected when the second rotational angle is reached, an investigation is performed to determine the difference of the second actual torque from the setpoint torque, and the charge release mode of the grinding tube is set when the second actual torque is within the threshold range, otherwise the grinding tube is operated in the grinding mode.
B02C 17/18 - Désagrégation au tonneau, c.-à-d. par des appareils constitués par une cuve où les produits à désagréger sont chargés, avec ou sans éléments particuliers de désagrégation tels que billes ou boulets Parties constitutives
Systems and method for controlling an alternating current (AC) electrodynamic machine (390) with a variable frequency drive (VFD) (380) include a control system (300) with a phase-locked-loop (PLL) circuit (382) for providing a stator flux angle signal (338) to the VFD (380), the PLL circuit (382) comprising a proportional integral (PI) regulator (332) providing an output signal (334); and a feedforward generator (350) in communication with the PLL circuit (382), wherein the feedforward generator (350) tracks a stator flux position of the AC electrodynamic machine (390) such that the feedforward generator (350) determines a stator frequency signal (352) based on stator flux signals (308, 310, 312) and supplies the stator frequency signal (352) downstream of the PI regulator (332), and wherein the stator frequency signal (352) is summed with the output signal (334) of the PI regulator (332) to provide a dynamically adapted output signal (335) of the PI regulator (332), and wherein the adapted output signal (335) is used to determine the stator flux angle signal (338).
H02P 21/00 - Dispositions ou procédés pour la commande de machines électriques par commande par vecteur, p. ex. par commande de l’orientation du champ
H02P 27/04 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de tension d'alimentation utilisant une tension d’alimentation à fréquence variable, p. ex. tension d’alimentation d’onduleurs ou de convertisseurs
29.
METHOD FOR ACTUATING A HOIST, HOIST AND CONTROL DEVICE FOR ACTUATING A HOIST DRIVE
The invention relates to a method for actuating a hoist (2), in particular for a shaft hoisting system, comprising a drive (4) having an associated control device (6), a cable carrier (8), at least one hoisting cable (10), and at least one hoist container (12, 14) for the vertical transport of transported material. The hoisting cable (10) elongates during loading of the hoist container (12, 14) due to the weight increase of the hoist container (12, 14). During unloading of the hoist container (12, 14), the hoisting cable (10) contracts again. In order to ensure height compensation during loading and unloading of the at least one hoist container, the drive (4) remains activated during loading or unloading and, to compensate for a change to the hoisting cable length, a rotation angle (.alpha.) of the cable carrier (8) is continually adjusted based on a predetermined rotation angle progression.
A multilevel converter includes single phase configurations. A single phase configuration has a first half-bridge (HB) module, a second HB module separated by a first capacitor coupled to a DC link, and a neutral point clamped (NPC) module clamped to the first HB module and the second HB module. Further, the single phase configuration has a first individual switching device and a second individual switching device, the first individual switching device operably connected to the first HB module and the NPC module, and the second individual switching device operably connected to the second HB module and the NPC module. The converter further includes a power output assembly comprising multiple phases and providing multiple-phase alternating (AC) power, wherein the single phase configuration supplies power to one of the multiple phases of the power output assembly.
A multilevel converter (10) includes a power supply assembly with a plurality of phases (U, V, W), and a power cell assembly with first power cells (12) and second power cells (12). The first power cells (12) and second power cells (12) have a same topology and a same current rating, and supply power to the plurality of phases (U, V, W) of the power supply assembly. Each phase of the plurality of phases (U, V, W) includes a first power cell (12) and a second power cell (12) of the power cell assembly, voltage ratings of the first power cells (12) and the second power cells (12) being different. Furthermore, a method for controlling a multilevel converter (10) and an electric drive system (1) comprising a multilevel converter (10) are disclosed.
H02M 1/12 - Dispositions de réduction des harmoniques d'une entrée ou d'une sortie en courant alternatif
H02M 7/49 - Combinaison des formes de tension de sortie d'une pluralité de convertisseurs
H02M 7/501 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande les tensions de sortie sinusoïdales étant obtenues par la combinaison de plusieurs impulsions de tension d'amplitude et de largeur différentes
H02M 7/5395 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p. ex. onduleurs à impulsions à un seul commutateur avec commande automatique de la forme d'onde ou de la fréquence de sortie par modulation de largeur d'impulsions
32.
DRIVE FOR A BELT CONVEYOR SYSTEM, METHOD FOR MOUNTING A DRIVE ON A BELT CONVEYOR SYSTEM, AND BELT CONVEYOR SYSTEM
A drive for a belt conveyor system includes a permanently excited synchronous motor having a stator and a rotor, wherein a gap size is formed between the rotor and the stator, and a holding device is provided, which is secured to the stator via a first securing device and to the rotor via a second securing device in order to provide secure assembly of the drive, such that the gap size is maintained, where the first securing device and/or the second securing device are detachably formed, such that an uninterrupted operation of the belt conveyor system is guaranteed.
Conductive elements (104A-C) are positioned within a housing (100) of an electric device. The conductive elements (104A-C) are arranged such that in an event of an electric arc (106) occurring between the conductive elements (104A-C) an electromagnetic force is exerted upon plasma of the electric arc (106) such that the electric arc (106) is directed towards a wall (108) of the housing (100). Furthermore, a conductor configuration (102) includes conductors (104A, 104B, 104C) and sacrificial electrodes (118A-C) positioned within a housing (100) of an electric device, wherein the conductors (104A-C) are arranged such that in an event of an electric arc (106) occurring between the conductors (104A-C) an electromagnetic force is exerted upon plasma of the electric arc (106) such that the electric arc (106) is directed towards the sacrificial electrodes (118A-C).
The invention relates to a method for detaching an adhering charge (22) from an inner wall (20) of a grinding tube (6) and to an arrangement (8) for detaching an adhering charge (22) from an inner wall (20) of a grinding tube (6). According to the method, the grinding tube (6) is rotated back in a drive-free manner from a pre-determinable, assumed rotary position (28) by the weight force (30) of the adhering charge (22), wherein at least one movement state variable (40) of the grinding tube (6) is detected and the grinding tube (6) is braked while being rotated back in dependence on the at least one detected movement state variable (40) in order to detach the adhering charge (22) from the inner wall (20) of the grinding tube (6). The arrangement (8) comprises a detecting device (14), a drive unit (10), a braking device (12) and a control device (16) which are each provided to carry out the method according to the invention.
B02C 17/18 - Désagrégation au tonneau, c.-à-d. par des appareils constitués par une cuve où les produits à désagréger sont chargés, avec ou sans éléments particuliers de désagrégation tels que billes ou boulets Parties constitutives
A method for producing an annular active part of an electric machine, where the active part has ring segment-shaped sections with grooves for receiving electric conductors, an electric machine with the ring segment-shaped section, a mill with the electric machine, and a service method for such an electric machine or such a mill, and where the goal is to assembly the electric machine inexpensively.
H02K 1/16 - Noyaux statoriques à encoches pour enroulements
H02K 1/18 - Moyens de montage ou de fixation des parties magnétiques fixes sur ou aux structures constituant le stator
H02K 3/38 - Enroulements caractérisés par la configuration, la forme ou la réalisation de l'isolement autour des têtes de bobines, des connexions équipotentielles ou des connexions s'y raccordant
36.
SLOT SEALING MATERIAL, SLOT SEAL AND METHOD FOR PRODUCING A SLOT SEAL
The invention relates to a slot sealing material (7) for an electric machine, which for accommodating an electric conductor arrangement (3) comprises at least one slot (2) having a slot opening (5). Said slot sealing material contains a magnetic filler, especially a soft-magnetic filler, and a reaction resin mixture comprising at least one resin component and a curing agent component. To improve the temperature resistance and mechanical strength of the slot sealing material, a dianhydride is used as curing agent component.
An interface for transmitting electrical power to a motor of a motor-compressor is provided. The interface may include a receptacle having a first end portion coupled with a stator of the motor and a second end portion defining a hole at least partially extending therethrough. The interface may also include a plug configured to be detachably coupled with the receptacle. The plug may include a rigid, conductive rod having a first end portion configured to be coupled with a penetrator of the motor-compressor, and a second end portion configured to be at least partially disposed in the hole of the receptacle and detachably coupled therewith. The rigid, conductive rod may be configured to electrically couple the penetrator with the receptacle, and the receptacle may be configured to transmit the electrical power to the stator.
The invention relates to an apparatus for transmitting an electric current to a rotatably mounted rotation body (10) which comprises at least two slip rings (11), having a contact piece support (1) and at least two contact pieces (2), wherein the contact piece support (1) is mechanically connected to the respective contact piece (2), wherein the respective contact piece (2) can be arranged in such a way that, when it is installed in an electrical machine with the rotatably mounted rotation body (14), the respective contact piece (2) is in contact with the respective slip ring (11). The invention further relates to an electrical machine having an apparatus of this kind and a rotation body (10) of this kind. In order to develop the apparatus to the effect that at least two electrical phases can be transmitted to the rotation body (10) with a high degree of reliability, it is proposed that an electrically insulating layer (3) is arranged between the contact piece support (1) and the respective contact piece (2).
The invention relates to an electrical steel sheet (11) with a layer (14) improving the electrical insulation. According to the invention, this layer is formed from tantalum oxide or titanium oxide, wherein a diffusion zone (15) that is enriched with tantalum or titanium adjoins toward the interior of the electrical steel sheet (11). This has the advantage that the layer adheres better on the electrical steel sheet (11). Furthermore, the tantalum or titanium of the diffusion zone (15) can also be used as a depot, which has the effect of spontaneously passivating impairments of the layer (14). Therefore, corrosion protection is ensured even when there are impairments of said layer (14). The invention also relates to a method for producing an electrical steel sheet in the way described.
C21D 8/12 - Modification des propriétés physiques par déformation en combinaison avec, ou suivie par, un traitement thermique pendant la fabrication d'objets à propriétés électromagnétiques particulières
C23C 10/00 - Diffusion à l'état solide uniquement d'éléments métalliques ou de silicium dans la couche superficielle de matériaux métalliques
C23C 10/28 - Diffusion à l'état solide uniquement d'éléments métalliques ou de silicium dans la couche superficielle de matériaux métalliques au moyen de solides, p. ex. au moyen de poudres, de pâtes
A power supply having one or more power electronic modules that may be replaced without shutting down the power supply. Each power electronic module may be enclosed in a separate compartment of the power supply. Each compartment may have stationary electrical connectors configured to electrically connect to the power electronic module. A racking mechanism connected to a handle outside the compartment may move a power electronic module out of electrical contact with the stationary electrical connectorsand/or into electrical contact with the stationary electrical connectors. Movement of a power electronic module within the compartment may occur without shutting down the power supply. Methods of replacing power electronic modules without shutting down the power supply are also provided, as are other aspects.
H02M 7/00 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continuTransformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif
H05K 7/14 - Montage de la structure de support dans l'enveloppe, sur cadre ou sur bâti
41.
REDUCTION OF THE ELECTRICAL RESISTANCE FOR AN ELECTRIC MACHINE HAVING WINDINGS ARRANGED IN GROOVES
An electric machine has grooves and windings, divided into strands, of electrical conductors. At least one strand has a number s of coils connected in series and arranged in the grooves. Each coil has sub-conductors connected in parallel and arranged in bundles. Each bundle is arranged in a groove at a bundle position relative to a deepest possible bundle position in the groove. The positions of all bundles in all coils define a number b of possible bundle positions of the strand. The bundles are interchanged between the coils such that each bundle is arranged in the grooves at least n times and at most n' times at each possible bundle position, wherein n is the integer quotient in regard to the quotient of the number s and the number b, wherein n'=n if s is divisible by b and n'=n+1 if s is not divisible by b.
H02K 3/12 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p. ex. avec des conducteurs en barre disposés dans des encoches
H02K 3/28 - Schémas d'enroulements ou de connexions entre enroulements
H02K 3/50 - Fixation des têtes de bobines, des connexions équipotentielles ou des connexions s'y raccordant
The invention relates to a method for operating a conveyor installation (2) comprising a belt (4) and at least one drive drum (6) for driving said belt (4), in which the torque (M) acting on the drive drum (6) is controlled, in order to alter the speed of the belt (4), within a time window (.DELTA.t) that is defined by a first rotational speed (ni) of the drive drum (6) and a second rotational speed (n2) of the drive drum (6).
A belt-conveying installation has at least one carrying structure, a conveying belt and at least one drive apparatus for driving the conveying belt. The drive apparatus includes at least one drive shaft, at least one drive-shaft-bearing arrangement, at least one drive roller and at least one separately-excited drive motor in the form of a frequency-converter-fed alternating-current synchronous motor with a stator and a rotor. The drive shaft and the at least one drive motor are connected to one another without any gearing, and the rotor and drive shaft are arranged coaxially, each drive shaft being guided through at least one rotor. The belt-conveying installation can be operated and used for heavy industry, in particular for the extractive or mining industry.
The invention relates to a method for operating a three-phase inverter (6) of a converter-fed magnetic bearing (2), the two coils (12, 14) of which are connected by a first connection (20, 22) to a respective output (W, V) of the three-phase inverter (6) at one end and are connected by a second connection (24, 26) to each other and to a third output (U) of the three-phase inverter (6) at the other end. According to the invention, a variable control current (2*iq) of the magnetic bearing (2) is injected into an output (U). A constant bias current (id) of the magnetic bearing (2) flows between the two additional outputs (V, W) of the three-phase inverter (6) and thus serially through the two coils (12, 14). In order to form the difference control of the magnetic bearing (2), the control current (2*iq) is divided among the two additional outputs (V, W), such that a control current (iq) flows parallel through the two coils (12, 14). As a result, a converter-fed magnetic bearing (2) is obtained, the operating method of which is further developed in such a manner that the effective current load of the three-phase inverter (6) is significantly reduced and the current rise velocity of the control current of the magnetic bearing (2) is significantly increased.
An axial bearing device includes an annular electrical sheet arrangement having individual sheets which protrude radially outward. In addition, an electrical coil is provided in the axial bearing device and is inserted into the electrical sheet arrangement to generate a magnetic field in the electrical sheet arrangement. The electric sheet arrangement includes at least two concentric electrical sheet rings. All adjacent electrical sheets of each electrical sheet ring substantially abut at the inner circumference of the respective electrical sheet ring.
The present invention provides a method and a device for controlling a lifting machine (2), in which at the time of releasing a cage (1), the lifting machine is controlled, according to the withdrawal status of latches (12) above or below stop blocks for fixing (10), to automatically complete a coordinating movement up- wards or downwards and then to perform a normal movement to the destination position thereof. The control method and device of the present invention have significantly improved the operational efficiency of the lifting machine, have comprehensive safety monitoring of a cage locking system to avoid human operation errors, have very high safety performance, and at the same time have reduced the brake wearing therein.
A wind turbine is provided. The wind turbine includes a generator generating an amount of electric power, and at least two electrical converter units, with each electrical converter unit being electrically connectable to the generator and to a utility grid. Each electrical converter unit is adapted to convert electric power up to a defined admissible maximum capacity. The amount of electric power generated by the generator is equally distributed to all respective electrical converter units. If at least one electrical converter unit fails, the amount of electric power generated by the generator is distributed to the remaining electrical converter units in operation, wherein each of the remaining electrical converter units converts a respective amount of electric power up.to its respective admissible maximum capacity.
F03D 80/00 - Détails, composants ou accessoires non prévus dans les groupes
H02J 3/46 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs contrôlant la répartition de puissance entre les générateurs, convertisseurs ou transformateurs
H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
48.
DRIVE SYSTEM FOR A BALL MILL AND METHOD FOR OPERATING A BALL MILL
A drive system for a ball mill includes a motor with a slip-ring rotor. The motor is assigned a family of characteristics relating the torque of the motor to a further characteristic variable. The family of characteristics has at least two different characteristics, and it includes a switching element that switches over the drive system abruptly between the two characteristics when there is a constant value of the characteristic variable. In a method for operating a ball mill with a drive system, a drum of the ball mill is moved out of a state of rest when the first characteristic is activated. In the event of caking in the drum of the ball mill, the drum is moved until the caking is in an inclined position. Actuation of the switching element brings about switching over to the second characteristic.
B02C 17/18 - Désagrégation au tonneau, c.-à-d. par des appareils constitués par une cuve où les produits à désagréger sont chargés, avec ou sans éléments particuliers de désagrégation tels que billes ou boulets Parties constitutives
H02P 1/34 - Dispositions de démarrage de moteurs électriques ou de convertisseurs dynamo-électriques pour faire démarrer des machines dynamo- électriques ou des convertisseurs dynamo-électriques pour faire démarrer individuellement un moteur à induction polyphasé par diminution progressive d'une impédance dans le circuit secondaire
The invention relates to a tube mill (1), wherein the tube mill (1) has a body (4) arranged so as to rotate about an axis of rotation (R), wherein material to be ground (13) can be introduced into the body (4) for comminution, wherein the tube mill (1) has an electric motor (2) for rotationally driving the body (4), wherein the electric motor (2) has a rotor (18), which is arranged around the body (4) and connected to the body (4) for rotation therewith and has a stator yoke (10), which is arranged stationarily around the rotor (18), wherein the tube mill (1) has a concrete element (3) running around at least half the circumference (U) of the stator yoke (10), wherein the stator yoke (10) is connected to the concrete element (3) in such a way that forces acting on the stator yoke (10) are transferred to the concrete element (3). The invention makes it possible to reduce vibrations of the stator yoke (10) of the electric motor (2) that occur during the operation of the electric motor (2).
Methods and arrangements for determining the fineness of a ground material in a mill are provided, wherein the acoustic spectrum of the mill during the grinding process is used for concluding the fineness. The mill comprises a drum in which the ground material is present during the grinding process, said drum being driven by a magnetic drive having at least one magnetic segment during the grinding process, so that a rotating magnetic field generated with the aid of the magnetic drive causes the drum to rotate. In order to determine the acoustic spectrum, a voltage induced in a coil of the magnetic segment is determined at least intermittently. On the basis of a model, using the detected time-dependent induced voltage, conclusions can be drawn about the acoustic spectrum and therefrom about the fineness.
B02C 17/18 - Désagrégation au tonneau, c.-à-d. par des appareils constitués par une cuve où les produits à désagréger sont chargés, avec ou sans éléments particuliers de désagrégation tels que billes ou boulets Parties constitutives
The invention relates to methods for manufacturing a rotor (14) for an electric machine (13), having the following method steps: a) manufacturing a magnetic element (8) by bonding permanent magnets (1, 1', 1'', 1''') by means of a first adhesive, each permanent magnet (1, 1', 1'', 1''') having a side with a magnetic North pole (N) and a side with a magnetic South pole (S), the permanent magnets (1, 1', 1'', 1''') being arranged during bonding such that the sides of the magnetic North poles (N) or the sides of the magnetic South poles (S) form a common underside (3, 3', 3'', 3''') of the magnetic elements (8), the first adhesive having a hard consistency in the cured state; and b) bonding the underside of the magnetic element (8) to a yoke (12) by means of a second adhesive, the second adhesive being soft and elastic in the cured state. Furthermore, the invention relates to an associated rotor. The invention permits rational manufacture of a rotor having a permanent magnet for a machine, the permanent magnets being integrally fixed to the yoke of the rotor with high reliability.
The method is used to determine the filling level of a loaded refuse container (2). The container (2) has a drive torque (M) applied to it by means of a drive (6), and causes it to rotate (.omega.). The drive torque (M) on the drive (6) is set by means of a predeterminable drive test sequence. A time/rotation speed profile of a rotation speed of the container (2) which results from the drive test sequence is recorded, and is analyzed. The filling level is determined on the basis of the results of the analysis. The method produces up to date, accurate information, determined during the refuse operation, about the filling level of the container (2).
B02C 17/18 - Désagrégation au tonneau, c.-à-d. par des appareils constitués par une cuve où les produits à désagréger sont chargés, avec ou sans éléments particuliers de désagrégation tels que billes ou boulets Parties constitutives
B02C 25/00 - Systèmes de commande spécialement adaptés au broyage ou à la désagrégation
The invention relates to a direct drive for large-scale drives, comprising a stator which is configured, when seen from the peripheral direction, by a plurality of segments, each having a self-contained winding arrangement, and a rotor which is configured from segments. The segments of the rotor are located on working elements that rotate with the rotor, and interact electromagnetically with a winding system of the stator. The inventive drive is especially suitable for ring motors and tube mill drives.
The invention relates to a speed monitoring method in an automation system for a conveyor installation, particularly for a pit. A speed monitoring method is provided that eliminates the need for detection elements for determining position that are arranged along the path of conveyance. An actual path value and an actual speed value are determined by means of at least one pulse counter. The actual path value is used for reading out a speed limiting value from a data table, which is stored in the automation system and which represents a stepped limiting value curve and for comparing the actual speed value with the read out speed limiting value.
B66B 1/16 - Systèmes de commande sans régulation, c.-à-d. sans action rétroactive électriques avec dispositifs, p. ex. des boutons poussoirs, pour commande indirecte des mouvements avec dispositifs pour enregistrer les impulsions commandant les mouvements d'une seule cabine
B66B 5/06 - Utilisation de dispositifs de vérification, de rectification, de mauvais fonctionnement ou de sécurité des ascenseurs réagissant à des conditions de fonctionnement anormales pour détecter les excès de vitesse électriques
55.
METHOD, CONTROL DEVICE AND DRIVE DEVICE FOR DETACHING A CHARGE STUCK TO THE INNER WALL OF A GRINDING PIPE
The invention relates to a method for detaching a charge (5) which is stuck to the inner wall of a grinding pipe (1), wherein the drive device (2) of the grinding pipe (1) is controlled by a control device (3) for targeted removal of the charge (5) that is stuck. The grinding pipe (1) is rotated in a targeted manner such that the charge (5) that is stuck is removed from the inner wall of the grinding pipe (1) as a result of multiple modification of the rotational speed of the grinding pipe (1) and, optionally, as a result of abrupt braking of the grinding pipe (1). Generally speaking, the material-dependent maximum angle of rotation F of the grinding pipe is not exceeded in order to avoid the charge that is stuck from falling in an uncontrolled manner. The invention supercedes labour-intensive and protracted methods for detaching such charges (5) since the tasks can be carried out by the same motor of the drive device (2) which is used to drive the grinding pipe (1) during the grinding process.
B02C 17/18 - Désagrégation au tonneau, c.-à-d. par des appareils constitués par une cuve où les produits à désagréger sont chargés, avec ou sans éléments particuliers de désagrégation tels que billes ou boulets Parties constitutives
brevets
