公开(公告)号：US20150322921A1

公开(公告)日：2015-11-12

申请号：US14647930

申请日：2013-11-25

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Yishan LI ,  Chen LIU ,  Dinh Duc NGUYEN ,  Liang SUN ,  Yi ZHOU

IPC: F03D9/00 ,  H02J3/38 ,  F03D7/04

CPC classification number: F03D9/257 ,  F03D7/04 ,  F03D7/048 ,  H02J3/38 ,  H02J3/386 ,  Y02E10/723 ,  Y02E10/763

Abstract: According to an embodiment, a power generation system is provided comprising a wind power plant comprising a plurality of wind turbine generators and a power plant controller configured to signal, to at least a portion of the plurality of wind turbine generators, a voltage reference for the output voltage of the wind turbine generator wherein each wind turbine generator comprises a controller configured to control the wind turbine generator based on the voltage reference.

Abstract translation: 根据实施例，提供了一种发电系统，其包括风力发电设备，该风力发电设备包括多个风力涡轮发电机和发电厂控制器，其被配置为向多个风力涡轮发电机的至少一部分发信号通知用于 风力涡轮发电机的输出电压，其中每个风力涡轮发电机包括被配置为基于电压参考来控制风力涡轮发电机的控制器。

公开(公告)号：US20180291876A1

公开(公告)日：2018-10-11

申请号：US15573931

申请日：2016-06-16

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Yi ZHOU ,  Gert Karmisholt ANDERSEN ,  Manoj GUPTA ,  Vajira Suminda GANEPOLA ,  Ciprian BIRIS ,  Miguel Angel COVA ACOSTA

IPC: F03D7/02 ,  F03D9/25 ,  G05B13/02 ,  G01R19/25 ,  H02K7/18 ,  H02P9/00

Abstract: A method is provided of protecting a wind turbine with a doubly-fed induction generator (DFIG) against a sub-synchronous resonance (SSR) event acting on the wind turbine. A plurality of power-output values or current-output values is measured over a given period of time that corresponds to a measurement cycle. It is determined whether power-output values or current-output-values measured in the at-least-one measurement cycle are indicative of an SSR-event critical for further operation of the wind turbine. The wind turbine is shut down if the measured power-output values or current-output values are indeed indicative of an SSR-event critical for operation of the wind turbine.

公开(公告)号：US20180159453A1

公开(公告)日：2018-06-07

申请号：US15575618

申请日：2016-06-09

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Gert Karmisholt ANDERSEN ,  Ciprian BIRIS ,  Yi ZHOU ,  Manoj GUPTA ,  Vajira Suminda GANEPOLA ,  Uffe C. MERRILD

IPC: H02P9/00 ,  H02P9/10

CPC classification number: H02P9/007 ,  H02P9/006 ,  H02P9/102

Abstract: A method is provided of controlling a doubly fed induction generator—(DFIG) wind turbine converter system if a sub-synchronous resonance event acts on the wind turbine. According to the method a sub-synchronous resonance event is detected. Thereupon, a switch from a non-SSR-current/voltage control mode to a SSR-control mode is performed. At least one of the following activities is performed in the SSR-control mode, namely: (i) freezing rotor AC voltages in magnitude and phase, (ii) altering at least one rotor-current-controller gain (iii) altering at least one rotor-current-controller time constant, to dampen the effect of the SSR-event on the wind turbine.