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WO2020079059A1 - Procédé servant à faire fonctionner une éolienne en cas d'incident - Google Patents

Procédé servant à faire fonctionner une éolienne en cas d'incident Download PDF

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Publication number
WO2020079059A1
WO2020079059A1 PCT/EP2019/078053 EP2019078053W WO2020079059A1 WO 2020079059 A1 WO2020079059 A1 WO 2020079059A1 EP 2019078053 W EP2019078053 W EP 2019078053W WO 2020079059 A1 WO2020079059 A1 WO 2020079059A1
Authority
WO
WIPO (PCT)
Prior art keywords
generator
converter
wind
side inverter
stator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2019/078053
Other languages
German (de)
English (en)
Inventor
Marc Stevens
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Senvion GmbH
Original Assignee
Senvion GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Senvion GmbH filed Critical Senvion GmbH
Publication of WO2020079059A1 publication Critical patent/WO2020079059A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/0264—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor for stopping; controlling in emergency situations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/0272—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor by measures acting on the electrical generator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • F03D9/255—Wind motors characterised by the driven apparatus the apparatus being an electrical generator connected to electrical distribution networks; Arrangements therefor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/02—Providing protection against overload without automatic interruption of supply
    • H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/007—Control circuits for doubly fed generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2220/00—Application
    • F05B2220/70—Application in combination with
    • F05B2220/706—Application in combination with an electrical generator
    • F05B2220/7064—Application in combination with an electrical generator of the alternating current (A.C.) type
    • F05B2220/70644—Application in combination with an electrical generator of the alternating current (A.C.) type of the asynchronous type, i.e. induction type
    • F05B2220/70646—Double fed induction generators (DFIGs)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/90—Braking
    • F05B2260/903—Braking using electrical or magnetic forces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00—Control
    • F05B2270/10—Purpose of the control system
    • F05B2270/107—Purpose of the control system to cope with emergencies
    • F05B2270/1071—Purpose of the control system to cope with emergencies in particular sudden load loss
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00—Control
    • F05B2270/30—Control parameters, e.g. input parameters
    • F05B2270/337—Electrical grid status parameters, e.g. voltage, frequency or power demand
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P2101/00—Special adaptation of control arrangements for generators
    • H02P2101/15—Special adaptation of control arrangements for generators for wind-driven turbines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • the invention relates to a method and a converter control for operating a wind energy installation with a double-fed asynchronous generator (DFIG) in the event of a fault.
  • DFIG double-fed asynchronous generator
  • wind turbines are critical with regard to their design and dimensioning, especially with regard to safety aspects.
  • a power failure in which the torque generated by the wind in the wind rotor does not counteract a braking generator torque
  • the rotating part of the wind energy installation can become overspeed and the associated increased or even extreme loads. Due to the failure of the network or more generally due to a load drop on the generator, the wind rotor begins to accelerate due to the wind because the braking generator torque is missing.
  • the wind rotor of the wind energy installation is accelerated and speeds occur which move a control device to intervene.
  • the control device detects a deviation of the speed of the wind rotor or generator from the target speed, it reacts with a change in the blade pitch angle.
  • the mechanical control is too slow in the event of a sudden drop in load. This can lead to damaging overspeeds of the wind rotor or generator.
  • the wind turbine suddenly leaps out of balance between the drive torque generated by the wind on the one hand and the braking torque effective in the generator on the other.
  • the mechanical power supplied to the wind turbine by the air flow can no longer be dissipated to the network in the form of electrical power.
  • Wind rotor, including hub and drive train are accelerated and the excess power is converted into kinetic energy of the rotating masses. If the speeds of the rotating parts exceed design limits, the components may be damaged. Damage to rotating parts represents an enormous safety risk for the wind turbine.
  • a load case with overspeed is referred to as a malfunction of the wind turbine, in this operating state there can be extreme loads on the wind turbine.
  • all load cases with overspeed are considered here, e.g. B. can be caused by a power failure or a century gust.
  • the wind turbine In the event of a malfunction, for example, the wind turbine generates more power than it can deliver (for example, by feeding it into a network to which it is connected). This is the case, for example, if the network is in an error state.
  • the network can be a transmission network, a distribution network or an internal wind farm network. Network faults or network faults occur, for example, after lightning strikes or short circuits and make z. B. noticeable as brief voltage drops in the network.
  • a technical problem or a technical defect in the wind turbine itself can also be considered as an accident.
  • the converter In wind turbines with a so-called double-fed asynchronous generator (double-fed induction generator, DFIG), the converter is connected to the rotor windings.
  • double-fed induction generator, DFIG double-fed induction generator
  • a major advantage of using a double-fed asynchronous generator in a wind turbine is the associated smaller dimensioning of the converter.
  • the method according to the invention for operating a wind power plant in the event of a fault relates to a wind power plant with a generator driven by a wind rotor, the generator being designed as a double-fed asynchronous generator which interacts with a converter for generating electrical power.
  • the stator of the generator is connected directly to a connecting line and a rotor is connected to the connecting line by the converter, the converter having a machine-side inverter and a network-side inverter which are connected to one another via an intermediate circuit are connected.
  • the wind power installation is disconnected from the grid in the event of a malfunction and the grid-side inverter is connected to the stator in order to generate a regenerative braking torque.
  • the separation from the grid and the connection of the stator to the grid-side inverter results in a circuit consisting of a (generator) stator, a grid-side inverter, an intermediate circuit, a machine-side inverter and a (generator) rotor.
  • the generator and thus the wind rotor of the wind energy installation can be braked in a controlled manner by means of a suitable control of the inverters by specifically and controlledly increasing the generator torque.
  • the generator torque acts, possibly via a gearbox, to counteract the torque absorbed by the wind rotor from the wind.
  • the grid-side inverter thus controls the stator for the targeted setting of a generator braking torque.
  • the method according to the invention thus enables the generator, and thus the mechanical drive train of the wind energy installation, to be braked by the converter in the event of a fault. Due to the good controllability of the converter, the generator motor the DFIG can be precisely controlled and the wind turbine can be braked precisely and specifically.
  • the wind turbine is separated from the grid by opening a switching element.
  • the switching element is preferably a circuit breaker or a contactor.
  • the switching element is preferably arranged on the connection line on the network side of a connection point between the rotor branch and the stator branch.
  • the rotor or stator branch is used to denote the connection from the rotor or stator to the connection point.
  • the rotor and stator branches meet the connecting cable. In other words, the stator and the grid-side inverter are connected at the connection point.
  • the stator is electrically connected to the grid-side inverter and the rotor to the machine-side inverter when the circuit breaker or contactor is open.
  • the generator is therefore only connected to the converter by opening the circuit breaker or contactor.
  • a braking device is created and a regenerative braking torque is generated.
  • the switching device When the switching device is open, the power generated by the stator flows through the line-side converter into the intermediate circuit.
  • the machine-side converter in turn draws power from the intermediate circuit and controls the rotor of the generator so that the desired braking torque is set.
  • an excess power is converted into heat in the intermediate circuit via a current sink, in particular a chopper.
  • a current sink in particular a chopper.
  • connection between the stator and the grid-side inverter makes it possible to use an already existing chopper arranged in the intermediate circuit. Except for a somewhat larger dimensioning of the chopper, no additional effort is therefore necessary.
  • the power generated by the stator flows through the line-side converter into the chopper (equivalent load).
  • the use of a chopper makes the traditional crowbar solution for protection against surges superfluous. When the crowbar is activated, the wind turbine is sometimes subjected to extreme loads, which creates additional problems for the operating behavior of the wind turbine.
  • the regenerative braking torque can be modulated via the grid-side and the machine-side inverter.
  • the generator of the wind energy installation can thus be braked in a controlled manner by suitable control of the inverters by targeted and controlled increase in the generator torque.
  • the electrical power of the generator that is still generated can be converted into heat via the chopper.
  • the chopper is designed in such a way that it dissipates the active power during the fault state, so that the system can continue to operate without impairment.
  • the method according to the invention can cover, in particular, that period of time (or the electrical power generated in this period of time) up to which the pitch angle of the rotor blades can be changed and the power generated by the electrical generator can thereby be reduced.
  • the invention further relates to a converter control for a wind energy installation, the wind energy installation comprising a generator driven by a wind rotor, where the generator is designed as a double-fed asynchronous generator which interacts with a converter for generating electrical power, with the supply of the electrical power in a network, a stator is connected directly to a connecting line and a rotor is connected to the connecting line via the converter, the converter having a machine-side inverter and a network-side inverter which are connected via an intermediate circuit.
  • the converter control comprises a brake control module which disconnects the wind power installation from the grid in the event of a fault and controls the grid-side inverter in such a way that a generator braking torque is generated despite the separation from the grid.
  • the grid-side inverter controls the stator for the targeted setting of a regenerative braking torque.
  • the wind turbine can be braked by increasing the generator torque.
  • the regenerative braking torque can be modulated via the control of the grid-side inverter.
  • the converter control according to the invention can be continued with further features which have been described in connection with the method according to the invention.
  • the method according to the invention can be continued with further features which have been described in connection with the converter control according to the invention.
  • FIG. 1 a wind energy plant with a double-fed asynchronous generator and a converter control according to the invention with a brake control module;
  • Figure 2 a topology of a wind turbine with double-fed
  • Asynchronous generator to illustrate the principle of the method according to the invention for operating the wind power plant in the event of a fault.
  • the basic features of the wind turbine 1 shown in FIG. 1 are of conventional design.
  • the wind energy installation 1 comprises a tower 10, at the upper end of which a machine house 11 is arranged to be pivotable in the azimuth direction.
  • a wind rotor 12 with a plurality of rotor blades 13 which are adjustable with respect to their setting angle is rotatably mounted on an end face of the machine house 11.
  • the wind rotor 12 drives the generator 14 via a rotor shaft and a gear, which may be arranged between the wind rotor 12 and the generator 14, but is not shown here. Together with a converter 15 connected to it, this generates electrical energy.
  • the generator 14 is designed as a double-fed asynchronous generator (DFIG), to the stator 16 (see FIG.
  • DFIG double-fed asynchronous generator
  • the converter 15 comprises a grid-side inverter 15a and a machine-side inverter 15b, which are connected to one another via an intermediate circuit 20.
  • the wind energy installation 1 further comprises a converter control 25 arranged in the nacelle 11, which is connected to the converter 15 via means (not shown) and acts thereon.
  • the converter control 25 also includes a brake control module 25a for controlling the inverters for generating a regenerative braking torque.
  • the connecting line 17 of the wind energy installation 1 is connected via a transformer 98, for example, to an internal wind farm 9.
  • a large number of wind energy plants 1, T can be connected to the wind farm internal collecting network 9.
  • the wind turbine 1 can also be connected directly to a medium or high voltage network 99 via a transformer.
  • the method according to the invention intervenes when the wind energy installation 1 is in a fault state. This is the case in a load case with overspeed, for example when the network (9, 99) is in an error state.
  • the principle of the method is described below on the basis of the topology of the wind turbine with DFIG shown in FIG. 2.
  • the wind energy installation 1 can no longer (completely) deliver the generated power to the grid 9, 99.
  • the wind power installation 1 is disconnected from the network 9, 99 by opening a switching device 30.
  • the switching element 30 is, for example, a circuit breaker.
  • the switching element 30 When the switching element 30 is opened, the current transport in the stator circuit breaks down. The power generated in the stator 16 can no longer be fed into the network 9, 99. Due to the arrangement of the switching element 30 on the connection line 17 on the grid side from the junction point 28 at which the stator branch 17a and the rotor branch 17b meet, the stator 16 remains connected to the grid-side inverter 15a when the switching element 30 is opened. The invention uses this to generate a regenerative braking torque.
  • the generator torque counteracts the torque absorbed by the wind rotor 12 from the wind, possibly via a gear.
  • the wind rotor 12 is thus braked by a regenerative braking torque.
  • the grid-side inverter 15a now acts directly on the stator 16 and controls the stator 16 for the targeted setting of the regenerative braking torque.
  • the generator 14 can consequently be braked via the converter 15 in the event of a fault.
  • the generator 14 of the wind energy installation 1 is braked in a controlled manner even in the event of a sudden load drop (disconnection of the wind energy installation 1 from the network 9, 99) and is therefore protected against overspeeds.
  • a circuit results from (generator) stator 16, grid-side inverter 15a, intermediate circuit 20, machine-side inverter 15b and (generator) rotor 18 the power generated by the stator 16 through the network-side inverter 15a into a chopper 22.
  • the arrows in FIG. 2 illustrate the action of the network-side inverter 15a on the stator 16 and the action of the machine-side inverter 15b on the rotor 18 .
  • the rotor 18 is still connected to the intermediate circuit 20 via the machine-side inverter 15b, while the stator circuit, which previously had no effect on the intermediate circuit 20, is now also connected via the network-side inverter 15a acts on the intermediate circuit 20.
  • the power generated by the stator 16 is thus directed in the converter 15. For this purpose, a current flows into the intermediate circuit 20.
  • the excess power is converted into heat via a current sink, namely a chopper 22 in the intermediate circuit 20.
  • the intermediate circuit 20 in FIG. 2 is a direct voltage intermediate circuit, in which a capacitor is also arranged in parallel with the chopper 22.
  • the chopper 22 in the intermediate circuit 20 is designed so that the DC voltage in the intermediate circuit can be stabilized in as many operating states as possible. This makes the use of a so-called crowbar in particular superfluous.
  • the active power is dissipated by the chopper 22 during the fault state, so that the system can continue to operate without being exposed to extreme loads.
  • the brake control module 25a which is designed as part of the converter control 25, controls the grid-side inverter 15a in the event of a fault in such a way that a regenerative braking torque is not only generated, but can also be modulated. Due to the good controllability of the converter 15, the generator torque or braking torque of the DFIG can be precisely controlled and modulated, as a result of which the wind rotor 12 or the rotating components of the wind energy installation 1 are braked precisely and in a targeted manner and thus effectively protected against overload.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

La présente invention concerne un procédé et une commande de convertisseur (25) permettant de faire fonctionner une éolienne (1) en cas d'incident. L'éolienne (1) comprend un générateur (14) entraîné par un rotor éolique (12), le générateur (14) étant réalisé sous la forme d'un générateur asynchrone à double alimentation, lequel coopère avec un convertisseur (15) pour la production d'énergie électrique. Pour alimenter la puissance électrique dans un réseau (9, 99), un stator (16) est raccordé directement à une ligne de raccordement (17) et un rotor (18) est raccordé à une ligne de raccordement (17) par l'intermédiaire du convertisseur (15). Le convertisseur (15) présente un onduleur (15b) côté machine et un onduleur (15a) côté réseau, lesquels sont reliés par l'intermédiaire d'un circuit intermédiaire (20). Selon l'invention, l'éolienne (1) est séparée du réseau (9, 99) en cas d'incident, et l'onduleur (15a) côté réseau est relié au stator (16) pour la production d'un couple de freinage générateur. Le générateur (14) de l'éolienne (1) peut être ralenti de manière contrôlée par l'intermédiaire d'une commande appropriée de l'onduleur (15a, 15b) en augmentant de manière ciblée le couple de générateur. La présente invention permet de réduire les surcharges élémentaires d'une éolienne.
PCT/EP2019/078053 2018-10-17 2019-10-16 Procédé servant à faire fonctionner une éolienne en cas d'incident Ceased WO2020079059A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018008195.9A DE102018008195A1 (de) 2018-10-17 2018-10-17 Verfahren zum Betreiben einer Windenergieanlage in einem Störfall
DE102018008195.9 2018-10-17

Publications (1)

Publication Number Publication Date
WO2020079059A1 true WO2020079059A1 (fr) 2020-04-23

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Application Number Title Priority Date Filing Date
PCT/EP2019/078053 Ceased WO2020079059A1 (fr) 2018-10-17 2019-10-16 Procédé servant à faire fonctionner une éolienne en cas d'incident

Country Status (2)

Country Link
DE (1) DE102018008195A1 (fr)
WO (1) WO2020079059A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111884261A (zh) * 2020-08-17 2020-11-03 苏州乾能电气有限公司 一种多工作模式双馈变流器电路
CN113267318A (zh) * 2021-06-29 2021-08-17 中国华能集团清洁能源技术研究院有限公司 一种双风轮风电机组风洞实验缩比模型及其工作方法
CN113452019A (zh) * 2021-06-29 2021-09-28 中国华能集团清洁能源技术研究院有限公司 一种电网失电条件下的风电机组极限载荷控制系统及方法
CN113541182A (zh) * 2021-06-11 2021-10-22 东方电气风电有限公司 一种双馈风电机组发电电路及双馈风电机组
CN116265734A (zh) * 2022-10-31 2023-06-20 北京金风科创风电设备有限公司 变流器制动控制方法、控制器及风力发电机组

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140070535A1 (en) * 2012-09-07 2014-03-13 Robert Gregory Wagoner Method and systems for operating a wind turbine using dynamic braking in response to a grid event
US20180034264A1 (en) * 2016-07-29 2018-02-01 General Electric Company Battery-supported braking system for a wind turbine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009017244A1 (de) * 2009-04-09 2010-10-14 Nordex Energy Gmbh Verfahren zum Betreiben einer Windenergieanlage bei fehlender Verfügbarkeit eines externen Versorgungsnetzes und Windenergieanlage zur Ausführung des Verfahrens

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140070535A1 (en) * 2012-09-07 2014-03-13 Robert Gregory Wagoner Method and systems for operating a wind turbine using dynamic braking in response to a grid event
US20180034264A1 (en) * 2016-07-29 2018-02-01 General Electric Company Battery-supported braking system for a wind turbine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111884261A (zh) * 2020-08-17 2020-11-03 苏州乾能电气有限公司 一种多工作模式双馈变流器电路
CN113541182A (zh) * 2021-06-11 2021-10-22 东方电气风电有限公司 一种双馈风电机组发电电路及双馈风电机组
CN113267318A (zh) * 2021-06-29 2021-08-17 中国华能集团清洁能源技术研究院有限公司 一种双风轮风电机组风洞实验缩比模型及其工作方法
CN113452019A (zh) * 2021-06-29 2021-09-28 中国华能集团清洁能源技术研究院有限公司 一种电网失电条件下的风电机组极限载荷控制系统及方法
CN116265734A (zh) * 2022-10-31 2023-06-20 北京金风科创风电设备有限公司 变流器制动控制方法、控制器及风力发电机组
CN116265734B (zh) * 2022-10-31 2023-12-01 北京金风科创风电设备有限公司 变流器制动控制方法、控制器及风力发电机组

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