公开(公告)号：US20160134114A1

公开(公告)日：2016-05-12

申请号：US14899694

申请日：2013-06-18

Applicant: VESTAS WIND SYSTEMS A/S

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

IPC: H02J3/01 ,  G01R19/00 ,  H02J3/38 ,  G01R27/02 ,  H02M1/12 ,  H02M7/44

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功率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。 所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：US20160231365A1

公开(公告)日：2016-08-11

申请号：US15015426

申请日：2016-02-04

Applicant: VESTAS WIND SYSTEMS A/S

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

IPC: G01R19/165 ,  H02K7/18 ,  F03D9/00 ,  G01R19/10

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.

公开(公告)号：US20130265013A1

公开(公告)日：2013-10-10

申请号：US13729705

申请日：2012-12-28

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Shu Yu CAO ,  Anshuman TRIPATHI ,  Swee Yee FONN ,  Ramasamy ANBARASU ,  Amit Kumar GUPTA

IPC: H02P9/02

CPC classification number: H02P9/02 ,  H02P21/12 ,  H02P21/141 ,  H02P25/024 ,  H02P25/28 ,  H02P25/30 ,  H02P27/02

Abstract: Parameters of PM machines, especially for IPM machine, are known to vary by significant amounts. This affects the controllability of such machines, which may lead to reduced power loading capability and increased losses. The present invention relates to a method for PM machine inductance profile identification based on voltage mode stator flux observation which could be easily integrated to the generator start-up process in wind turbine application for both stator flux vector feedback control system and current vector feedback control system.

Abstract translation: 已知PM机器，特别是IPM机器的参数变化很大。 这会影响这种机器的可控性，这可能导致功率负载能力下降和损失增加。 本发明涉及一种基于电压模式定子磁链观测的PM机电感轮廓识别方法，可以容易地集成到定子通量矢量反馈控制系统和电流矢量反馈控制系统的风力发电机应用中的发电机启动过程 。

公开(公告)号：US20130200620A1

公开(公告)日：2013-08-08

申请号：US13728656

申请日：2012-12-27

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Amit Kumar GUPTA ,  Anshuman TRIPATHI ,  Ramasamy ANBARASU ,  Ove STYHM ,  Gil Lampong OPINA, Jr. ,  Yugarajan KARUPPANAN ,  Bing LI ,  Shu Yu CAO

IPC: H02P9/10

CPC classification number: H02P9/10 ,  F03D7/0284 ,  H02P2101/15 ,  Y02E10/723

Abstract: A wind turbine is provided. The wind turbine includes a generator, an output thereof being connectable to a power grid via a power transmission path, the power transmission path comprising a generator side converter coupled to the output of the generator, a grid side converter coupled to the power grid, and a DC link coupled between the generator side converter and the grid side converter. For diverting the generator power, a load dump arrangement is provided which includes at least one resistor, a plurality of switches, and a plurality of electrical connections which electrically connect the at least one resistor to the output of the generator and across the DC link via the plurality of switches. One common and configurable load dump is used for both converter system failures and grid failures. As compared to two separate load dumps for converter failures and grid failures, the single load dump will require a smaller space for a wind turbine. Thus, the weight and size of the power converter system may be reduced.

Abstract translation: 提供风力涡轮机。 风力涡轮机包括发电机，其输出端经由电力传输路径可连接到电网，该电力传输路径包括耦合到发电机的输出的发电机侧转换器，耦合到电网的电网侧转换器，以及 耦合在发电机侧转换器和电网侧转换器之间的DC链路。 为了转移发电机功率，提供负载突降装置，其包括至少一个电阻器，多个开关和多个电连接，其将至少一个电阻器电连接到发电机的输出端并跨越DC链路经由 多个开关。 一个通用和可配置的负载转储用于转换器系统故障和电网故障。 与用于转换器故障和电网故障的两个单独的负载转储相比，单个负载转储将需要较小的风力发电机空间。 因此，可以减小功率转换器系统的重量和尺寸。

公开(公告)号：US20190369145A1

公开(公告)日：2019-12-05

申请号：US15645729

申请日：2017-07-10

Applicant: VESTAS WIND SYSTEMS A/S

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

IPC: G01R19/165 ,  F03D9/25 ,  F03D7/02 ,  F03D7/04 ,  H02J3/26 ,  H02J3/38 ,  H02P9/04 ,  F03D7/00 ,  G01R19/10 ,  H02K7/18

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.

公开(公告)号：US20160099561A1

公开(公告)日：2016-04-07

申请号：US14934997

申请日：2015-11-06

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Ove STYHM ,  Anshuman TRIPATHI ,  Amit Kumar GUPTA

IPC: H02H7/06 ,  F03D9/00

CPC classification number: H02P9/00 ,  F03D7/04 ,  F03D9/255 ,  H02H7/067 ,  H02P3/22 ,  H02P9/006 ,  H02P2101/15

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.

Abstract translation: 提供了用于从风力涡轮机中的发电机消散功率的功率消散装置。 发生器包括对应于多相输出的多个输出端子。 功率消耗装置包括多个散热单元，多个半导体开关，用于切换半导体开关的触发电路和用于控制触发电路的操作的控制单元，从而控制半导体开关的切换。

公开(公告)号：US20150369217A1

公开(公告)日：2015-12-24

申请号：US14765938

申请日：2013-02-15

Applicant: VESTAS WIND SYSTEMS A/S

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

IPC: F03D9/00 ,  H02P9/00 ,  H02J3/38 ,  F03D7/02 ,  H02J3/18

CPC classification number: F03D7/048 ,  F03D7/0272 ,  F03D9/257 ,  G05B23/0235 ,  H01H71/10 ,  H01H81/00 ,  H02H3/006 ,  H02H3/025 ,  H02H3/08 ,  H02H7/093 ,  H02H7/30 ,  H02J3/16 ,  H02J3/18 ,  H02J3/38 ,  H02J3/381 ,  H02J3/382 ,  H02J3/386 ,  H02P9/006 ,  Y02E10/563 ,  Y02E10/763 ,  Y02E40/34

Abstract: A method of operating a wind turbine plant is provided. Such a wind turbine plant comprises at least one transmission branch comprising a plurality of wind turbine generators and coupled to an electrical grid at a point of common coupling through at least one circuit breaker comprising a breaking capacity. The method comprises monitoring the electrical grid for a low voltage fault event; and if a low voltage fault event is detected: calculating a grid short circuit strength, determining a short circuit current limit if the grid short circuit strength requires an initial fault current contribution which exceeds the breaking capacity of the circuit breaker to be passed through the circuit breaker, determining a maximum fault current contribution based on the short circuit current limit and operating the wind turbine generators to provide to the electrical grid the maximum fault current contribution.

Abstract translation: 提供了一种操作风力涡轮机设备的方法。 这种风力涡轮机设备包括至少一个包括多个风力涡轮发电机的传输分支，并且通过包括断路能力的至少一个断路器在公共耦合点处耦合到电网。 该方法包括监测低压故障事件的电网; 并且如果检测到低电压故障事件：计算电网短路强度，如果电网短路强度需要超过断路器通过电路的分断能力的初始故障电流贡献，则确定短路电流限制 断路器，基于短路电流限制确定最大故障电流贡献，并操作风力涡轮发电机以向电网提供最大故障电流贡献。

公开(公告)号：US20160245259A1

公开(公告)日：2016-08-25

申请号：US15031044

申请日：2014-09-26

Applicant: VESTAS WIND SYSTEMS A/S

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

IPC: F03D9/00 ,  H02H7/06 ,  H02J3/38 ,  F03D7/04 ,  H02P9/10

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。