公开(公告)号：WO2013097867A2

公开(公告)日：2013-07-04

申请号：PCT/DK2012/050503

申请日：2012-12-21

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： GUPTA, Amit Kumar ,  THIA, Hock Heng ,  DOAN, Duy Duc ,  ANDERSEN, Gert Karmisholt

CPC classification number: F03D7/0264 ,  F03D9/255 ,  H02J3/386 ,  H02P9/08 ,  H02P29/024 ,  H02P29/0241 ,  Y02E10/723 ,  Y02E10/763

Abstract: A wind turbine is provided. The wind turbine comprises a generator, a power converter for converting at least a portion of electrical power generated by the generator, an energy dissipating unit and a controller. The power converter comprises a generator-side converter, a grid-side converter and a DC (direct current) link there between. The energy dissipating unit is operatively coupled to the DC-link. The controller is adapted to activate the energy dissipating unit to dissipate energy from the DC-link in response to a shutdown request.

Abstract translation: 提供风力涡轮机。 风力涡轮机包括发电机，用于转换由发电机产生的电力的至少一部分的功率转换器，能量消散单元和控制器。 电力转换器包括发电机侧转换器，电网侧转换器和其间的DC（直流）连接。 能量消耗单元可操作地耦合到DC链路。 控制器适于激活能量消耗单元以响应于关闭请求而从DC链路消散能量。

公开(公告)号：WO2013097862A2

公开(公告)日：2013-07-04

申请号：PCT/DK2012/050493

申请日：2012-12-20

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： GUPTA, Amit Kumar ,  GUPTA, Manoj

CPC classification number: F03D7/00 ,  F03D9/255 ,  F03D9/257 ,  H02J3/386 ,  H02M5/458 ,  H02P2101/15 ,  Y02E10/763

Abstract: A wind turbine generator is disclosed herein. In a described embodiment, the wind turbine generator comprises an electrical generator 101 configured to generate AC signals, a plurality of power converters 110,112,111 operated by a gating signal with each power converter configured to convert the AC signals from the electrical generator 101 into fixed frequency AC signals. The wind turbine generator further comprises a controller configured to enter a fault mode when a grid voltage falls outside an acceptable threshold, and during the fault mode the controller is configured to provide a reactive current reference dependant on a grid voltage distant from the wind turbine generator.A method of controlling a wind turbine generator is also disclosed.

Abstract translation: 本文公开了一种风力涡轮发电机。 在所描述的实施例中，风力涡轮发电机包括被配置为产生AC信号的发电机101，由选通信号操作的多个功率转换器110,112,111，每个功率转换器被配置为将来自发电机101的AC信号转换成固定频率AC 信号。 风力涡轮发电机还包括控制器，其配置为当电网电压落在可接受的阈值之外时进入故障模式，并且在故障模式期间，控制器被配置为提供取决于远离风力涡轮发电机的电网电压的无功电流参考 还公开了一种控制风力涡轮发电机的方法。

公开(公告)号：WO2012062327A2

公开(公告)日：2012-05-18

申请号：PCT/DK2011/050425

申请日：2011-11-10

Applicant: VESTAS WIND SYSTEMS A/S ,  GUPTA, Amit Kumar ,  NIELSEN, John Godsk ,  YANG, Liang

Inventor： GUPTA, Amit Kumar ,  NIELSEN, John Godsk ,  YANG, Liang

IPC: F03D9/00

CPC classification number: G01R19/16533 ,  F03D7/00 ,  F03D7/0284 ,  F03D7/042 ,  F03D9/255 ,  F03D9/257 ,  F05B2270/337 ,  G01R19/10 ,  H02J3/26 ,  H02J3/386 ,  H02J2003/001 ,  H02K7/183 ,  H02P9/04 ,  Y02E10/723 ,  Y02E10/725 ,  Y02E10/763 ,  Y02E40/50

Abstract: A method for operating a power generation system coupled to a power grid during a grid unbalance event, a method for determining an injection current to be supplied into a power grid by a power generation system, and a method for addressing an asymmetric grid fault in a power grid connected to a power generation system are provided. The methods may be carried out based on a reactive or an active power/current priority. For reactive power/current priority, a positive sequence reactive current and a negative sequence reactive current may be first determined. The positive sequence reactive current and the negative sequence reactive current may be adjusted, and a positive sequence active current and a negative sequence active current may be determined such that a maximum current limit, a maximum allowed active power ripple and a maximum grid side converter voltage are not exceeded. For active power/current priority, a positive sequence active current and a negative sequence active current may be first determined. A positive sequence reactive current and a negative sequence reactive current may then be determined based on the positive sequence active current and the negative sequence active current. The positive sequence active current, the negative sequence active current, the positive sequence reactive current and the negative sequence reactive current may be determined such that a maximum current limit, a maximum allowed active power ripple and a maximum grid side converter voltage are not exceeded.

Abstract translation: 一种用于在电网不平衡事件期间操作耦合到电网的发电系统的方法，用于确定由发电系统供应到电网中的注入电流的方法，以及用于解决电力系统中不对称电网故障的方法 提供连接到发电系统的电网。 这些方法可以基于无功或有功功率/电流优先级进行。 对于无功功率/电流优先级，可以首先确定正序无功电流和负序无功电流。 可以调整正序无功电流和负序无功电流，并且可以确定正序有功电流和负序有功电流，使得最大电流限制，最大允许有功功率纹波和最大电网侧转换器电压 不超过 对于有功功率/电流优先级，可以首先确定正序有功电流和负序有功电流。 然后可以基于正序有功电流和负序有功电流来确定正序无功电流和负序无功电流。 可以确定正序有功电流，负序有功电流，正序无功电流和负序无功电流，使得不超过最大电流限制，最大允许有功功率纹波和最大电网侧转换器电压。

公开(公告)号：WO2015058769A1

公开(公告)日：2015-04-30

申请号：PCT/DK2014/050306

申请日：2014-09-26

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： GUPTA, Manoj ,  GUPTA, Amit Kumar ,  GURU, Dilip Kumar

IPC: H02H7/30 ,  F03D7/02 ,  F03D7/04 ,  F03D9/00 ,  F03D11/00 ,  H02J3/12 ,  H02J3/16 ,  H02J3/24 ,  H02J3/38 ,  H02P9/00

CPC classification number: F03D7/048 ,  F03D7/0284 ,  F03D7/043 ,  F03D9/255 ,  F03D9/257 ,  F03D17/00 ,  H02H7/067 ,  H02H7/30 ,  H02J3/12 ,  H02J3/16 ,  H02J3/24 ,  H02J3/38 ,  H02J3/386 ,  H02J2003/388 ,  H02P9/006 ,  H02P9/10 ,  Y02E10/763 ,  Y02E40/34

Abstract: A method for controlling a wind power plant, the wind power plant including a plant controller for controlling a plurality of wind turbine generators. The method for controlling a wind power plant allows the wind power plant to continue operating through a grid fault in a weak grid environment. In the method, a fault recovery process is carried out with a wind turbine power controller during a wind turbine fault recovery state to determine a grid voltage (VWTG), compare the grid voltage to a predetermined reference voltage (Vref) to obtain a difference value, and determine a current reference (QrefVC) based on the difference value for generating a reactive current (Idref) for regulating the grid voltage to the predetermined reference grid voltage. A corresponding wind power plant is further provided.

Abstract translation: 一种用于控制风力发电厂的方法，所述风力发电厂包括用于控制多个风力涡轮发电机的设备控制器。 控制风力发电厂的方法允许风力发电厂在弱电网环境中通过电网故障继续运行。 在该方法中，在风力涡轮机故障恢复状态期间，利用风力涡轮机功率控制器进行故障恢复处理，以确定电网电压（VWTG），将电网电压与预定参考电压（Vref）进行比较以获得差值 ，并且基于用于产生用于将电网电压调节到预定参考电网电压的无功电流（Idref）的差值来确定电流参考（QrefVC）。 进一步提供相应的风力发电厂。

公开(公告)号：WO2013044918A2

公开(公告)日：2013-04-04

申请号：PCT/DK2012/050316

申请日：2012-08-29

Applicant: VESTAS WIND SYSTEMS A/S ,  POPESCU, Nicolae ,  TRIPATHI, Anshuman ,  GUPTA, Amit Kumar

Inventor： POPESCU, Nicolae ,  TRIPATHI, Anshuman ,  GUPTA, Amit Kumar

CPC classification number: H02J3/01 ,  H02J3/386 ,  H02M1/126 ,  Y02E10/763 ,  Y02E40/40

Abstract: A harmonic filter arrangement suitable for use in a wind turbine is provided. The harmonic filter arrangement comprises a first filter arrangement, and a second filter arrangement. The first filter arrangement comprises at least an inductor, and the second filter arrangement comprises at least an inductor and a capacitor. The inductor of the first filter arrangement comprises a first winding around a magnetic core, and the inductor of the second filter arrangement comprises a second winding around the first winding.

Abstract translation: 提供了适用于风力涡轮机的谐波滤波器装置。 谐波滤波器装置包括第一滤波器装置和第二滤波器装置。 第一滤波器装置至少包括电感器，第二滤波器装置至少包括电感器和电容器。 第一滤波器装置的电感器包括围绕磁芯的第一绕组，并且第二滤波器装置的电感器包括围绕第一绕组的第二绕组。

公开(公告)号：WO2012062323A2

公开(公告)日：2012-05-18

申请号：PCT/DK2011/050421

申请日：2011-11-08

Applicant: VESTAS WIND SYSTEMS A/S ,  TEODORESCU, Remus ,  RODRIGUEZ, Pedro ,  ALLOZA, Alvaro Luna ,  GUPTA, Amit Kumar

Inventor： TEODORESCU, Remus ,  RODRIGUEZ, Pedro ,  ALLOZA, Alvaro Luna ,  GUPTA, Amit Kumar

IPC: F03D9/00

CPC classification number: G01R19/16533 ,  F03D7/00 ,  F03D7/0284 ,  F03D7/042 ,  F03D9/255 ,  F03D9/257 ,  F05B2270/337 ,  G01R19/10 ,  H02J3/26 ,  H02J3/386 ,  H02J2003/001 ,  H02K7/183 ,  H02P9/04 ,  Y02E10/723 ,  Y02E10/725 ,  Y02E10/763 ,  Y02E40/50

Abstract: A method for operating a wind turbine and a system for operating a wind turbine are provided. The wind turbine includes a grid side converter and the grid side converter is coupled to a grid via a power line. The method includes determining a wind turbine operation strategy; determining a first active power reference and a first reactive power reference indicating a requested amount of active power and reactive power, respectively, depending on at least the wind turbine operation strategy; measuring a grid voltage of the grid; determining a positive sequence component and a negative sequence component of the grid voltage i.e. a positive sequence voltage and a negative sequence voltage; determining a second active power reference and a second reactive power reference indicating an actual amount of active power and reactive power to be supplied by the grid side converter to the grid, respectively, depending on at least the first active power reference, the first reactive power reference, and the wind turbine operation strategy; generating, based on at least the wind turbine operation strategy, a first parameter and a second parameter which define a proportion of positive sequence current component and negative sequence current component to be injected by the grid side converter in order to supply active power and reactive power in accordance with the second active power reference and the second reactive power reference; generating a current reference based on at least the second active power reference, the second reactive power reference, the positive sequence voltage, the negative sequence voltage, the first parameter, and the 77 second parameter; and supplying, with the grid side converter, active and reactive power to the power line based on the current reference.

Abstract translation: 提供了一种用于操作风力涡轮机的方法和一种用于操作风力涡轮机的系统。 风力涡轮机包括电网侧转换器并且电网侧转换器经由电力线耦合到电网。 该方法包括确定风力涡轮机操作策略; 至少取决于风力涡轮机操作策略，确定分别指示所请求的有功功率和无功功率量的第一有功功率基准和第一无功功率基准; 测量电网的电网电压; 确定电网电压的正序分量和负序分量，即正序电压和负序电压; 根据至少第一有功功率参考值，确定第二有功功率参考值和第二无功功率参考值，所述第二无功功率参考值指示要由电网侧转换器分别向电网供应的有功功率和无功功率的实际量， 参考，以及风机运行策略; 至少基于风力涡轮机操作策略生成第一参数和第二参数，该第一参数和第二参数定义由电网侧变流器注入的正序电流分量和负序电流分量的比例，以便提供有功功率和无功功率 根据所述第二有功功率基准和所述第二无功功率基准; 至少基于所述第二有功功率参考，所述第二无功功率参考，所述正序电压，所述负序电压，所述第一参数以及所述第七参数来生成电流参考; 并且利用电网侧转换器基于电流基准向电力线提供有功功率和无功功率。

公开(公告)号：WO2014012553A1

公开(公告)日：2014-01-23

申请号：PCT/DK2013/050237

申请日：2013-07-12

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： GUPTA, Amit Kumar ,  PRATAMA, Ryan Arya

IPC: F03D7/02 ,  F03D9/00

CPC classification number: H02P9/102 ,  F03D7/0224 ,  F03D7/0284 ,  F03D9/255 ,  F05B2270/107 ,  F05B2270/337 ,  H02P2101/15 ,  Y02E10/723

Abstract: A method of operating a wind turbine is provided. The wind turbine comprises a turbine rotor with at least one blade having a variable pitch angle, a power generator, and a power converter connected to the power generator via a first circuit breaker and to a power grid via a second circuit breaker. According to the method, overvoltage events at the power grid are monitored. If an overvoltage event is detected, the method comprises opening the first circuit breaker and the second circuit breaker, disabling active operation of the power converter, connecting a power dissipating unit to the power generator to dissipate power output from the power generator, and moving the pitch angle of the at least one blade towards a feathered position.

Abstract translation: 提供了一种操作风力涡轮机的方法。 风力涡轮机包括具有至少一个具有可变俯仰角的叶片的涡轮转子，发电机和经由第一断路器连接到发电机的功率转换器，以及经由第二断路器连接到电网的电力转换器。 根据该方法，监测电网过电压事件。 如果检测到过电压事件，则该方法包括打开第一断路器和第二断路器，禁用功率转换器的主动操作，将功率消耗单元连接到功率发生器，以耗散从发电机输出的功率，并移动 所述至少一个叶片的俯仰角朝向羽状位置。

公开(公告)号：WO2014202077A1

公开(公告)日：2014-12-24

申请号：PCT/DK2013/050199

申请日：2013-06-18

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： GUPTA, Amit Kumar ,  GUPTA, Manoj ,  GURU, Dilip Kumar

IPC: H02M1/12 ,  H02J3/01

CPC classification number: H02J3/01 ,  G01R19/0092 ,  G01R27/02 ,  H02J3/1842 ,  H02J3/382 ,  H02J3/383 ,  H02J3/386 ,  H02M1/12 ,  H02M7/44 ,  Y02E10/763 ,  Y02E40/22

Abstract: The invention relates to a control system for compensating undesired electrical harmonics on an electrical grid. Part of the control system referred to as a harmonic compensator is operatively connected with a power inverter of a power producing unit supplying power to the grid. Another part of the control system, referred to as an impedance detector, is operatively connected to a point of coupling to which point one or more power producing units are connected. The impedance detector is configured to scan impedances as a function of frequency to identify frequencies of impedance peaks which peaks are indicative of resonance frequencies. The determined resonance frequencies are supplied to one or more the harmonic compensators. A compensator determines control signals to the inverter which causes the inverter to inject compensation currents to the grid which currents will damp currents oscillating at or close to the determined resonance frequency.

Abstract translation: 本发明涉及一种用于补偿电网上不需要的电谐波的控制系统。 被称为谐波补偿器的控制系统的一部分与向电网供电的发电单元的电力逆变器可操作地连接。 称为阻抗检测器的控制系统的另一部分可操作地连接到连接点，一个或多个功率产生单元连接到该点。 阻抗检测器被配置为扫描作为频率的函数的阻抗，以识别峰值指示谐振频率的阻抗峰值的频率。 确定的谐振频率被提供给一个或多个谐波补偿器。 补偿器确定到逆变器的控制信号，使逆变器向电网注入补偿电流，电流将阻尼在或接近所确定的谐振频率振荡的电流。

公开(公告)号：WO2013013678A3

公开(公告)日：2013-01-31

申请号：PCT/DK2012/050278

申请日：2012-07-24

Applicant: VESTAS WIND SYSTEMS A/S ,  STYHM, Ove ,  TRIPATHI, Anshuman ,  GUPTA, Amit Kumar

Inventor： STYHM, Ove ,  TRIPATHI, Anshuman ,  GUPTA, Amit Kumar

IPC: H02P3/22 ,  H02P9/00

Abstract: A power dissipating arrangement for dissipating power from a generator in a wind turbine is provided. The generator comprises a plurality of output terminals corresponding to a multi-phase output. The power dissipating arrangement comprises a plurality of dissipating units, a plurality of semiconductor switches, a trigger circuit for switching the semiconductor switches and a control unit for controlling the operation of the trigger circuit, thereby controlling the switching of the semiconductor switches. Each dissipating unit includes a first terminal and a second terminal. The first terminal of each dissipating unit is coupled to each output terminal of the generator. Each semiconductor switch includes a first terminal anode, a second terminal and a gate terminal. The first terminal of each semiconductor switch is coupled to the second terminal of each dissipating unit and the second terminal of the semiconductor switch is coupled to the second terminal of another dissipating unit, such that the second terminal of each dissipating unit is coupled to the first terminal of one semiconductor switch and the second terminal of another semiconductor switch. The trigger circuit is coupled to the gate terminal of the plurality of the semiconductor switches for switching the semiconductor switches.

公开(公告)号：WO2012076015A2

公开(公告)日：2012-06-14

申请号：PCT/DK2011/050465

申请日：2011-12-07

Applicant: VESTAS WIND SYSTEMS A/S ,  GUPTA, Amit Kumar ,  TRIPATHI, Anshuman ,  STYHM, Ove ,  HELLE, Lars ,  KARUPPANAN, Yugarajan ,  OPINA, Gil Jr Lampong

Inventor： GUPTA, Amit Kumar ,  TRIPATHI, Anshuman ,  STYHM, Ove ,  HELLE, Lars ,  KARUPPANAN, Yugarajan ,  OPINA, Gil Jr Lampong

IPC: F03D1/00

CPC classification number: F03D7/0264 ,  F03D9/255 ,  H02J3/386 ,  Y02E10/72 ,  Y02E10/763

Abstract: According to an embodiment of the present invention, a method of operating a wind turbine including a power generator, a generator/machine side converter connected to the power generator, a grid/line side converter connected to a power grid through power components, and a DC-link connected between the machine side converter and the line side converter, comprises: Monitoring the power grid for overvoltage events; if an overvoltage event is detected disabling active operation of the machine side converter and of the line side converter, enabling an AC- load dump connected between the machine side converter and the power generator in order to dissipate active power output by the power generator into the AC-load dump, waiting for a waiting period, and enabling active operation of the line side converter and the machine side converter if the overvoltage ends within the waiting period.

Abstract translation: 根据本发明的实施例，一种运行风力涡轮机的方法，包括发电机，连接到发电机的发电机/机器侧转换器，通过功率部件连接到电网的电网/线路侧转换器，以及 连接在机器侧转换器和线路侧转换器之间的直流母线包括：监控电网的过压事件; 如果检测到过电压事件禁止机器侧转换器和线路侧转换器的主动操作，则能够连接在机器侧转换器和发电机之间的AC负载转储器，以将发电机的有功功率输出消耗到 交流负载突降，等待等待期，如果过电压在等待期结束，则启用线路侧转换器和机侧转换器的有效工作。