公开(公告)号：US20160204601A1

公开(公告)日：2016-07-14

申请号：US14442311

申请日：2013-11-13

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Victor DONESCU ,  Lars HELLE

IPC: H02H9/04 ,  H02H9/02 ,  F03D9/00

CPC classification number: H02H9/045 ,  F03D7/0272 ,  F03D9/25 ,  F03D17/00 ,  F03D80/80 ,  F05B2270/328 ,  F05B2270/80 ,  H02H9/02 ,  H02H9/041 ,  H02P29/0241 ,  Y02E10/723 ,  Y02E10/725

Abstract: A method is provided for reducing an impact of an unbalanced short circuit event that occurs in a polyphase permanent magnet generator of a wind turbine. According to the method, an unbalanced short circuit event is detected in the generator of the wind turbine, and, in response to detecting the unbalanced short circuit event, at least one phase of the generator is shorted at a switch-point between the generator and a converter of the wind turbine to create a balanced short circuit in the generator. By doing so, the torque response of the generator is altered to avoid high amplitude torque oscillations that would otherwise occur as a result of the unbalanced short circuit event.

Abstract translation: 提供了一种用于减少在风力涡轮机的多相永久磁铁发生器中发生的不平衡短路事件的影响的方法。 根据该方法，在风力发电机的发电机中检测到不平衡短路事件，并且响应于检测到不平衡短路事件，发电机的至少一相在发电机和发电机之间的切换点处短路 风力涡轮机的转换器，以在发电机中产生平衡的短路。 通过这样做，发电机的转矩响应被改变以避免由于不平衡的短路事件而产生的高振幅的转矩振荡。

公开(公告)号：US20160241154A1

公开(公告)日：2016-08-18

申请号：US15025053

申请日：2014-01-15

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Victor DONESCU ,  Peter MONGEAU

IPC: H02M5/458 ,  H02J3/38

CPC classification number: H02M5/458 ,  H02J3/382 ,  H02J3/386 ,  H02M7/493 ,  H02M2001/0032 ,  H02M2001/007 ,  H02M2007/4822 ,  Y02B70/16

Abstract: According to some aspects, a power conversion system for converting electrical power produced by a generator is provided. The power conversion system comprises at least one first power converter configured to convert alternating current from the generator to direct current, at least one second power converter configured to convert the direct current to alternating current, and least one controller configured to reconfigure the at least one first power converter to convert direct current to alternating current and/or to reconfigure the at least one second power converter to convert alternating current to direct current.

Abstract translation: 根据一些方面，提供了用于转换由发电机产生的电力的电力转换系统。 功率转换系统包括至少一个第一功率转换器，其被配置为将来自发电机的交流电转换为直流电，配置成将直流电转换为交流电的至少一个第二功率转换器以及被配置为重新配置至少一个 第一功率转换器，用于将直流电转换成交流电流和/或重新配置至少一个第二功率转换器以将交流电转换为直流电。