公开(公告)号：US20170045035A1

公开(公告)日：2017-02-16

申请号：US14826067

申请日：2015-08-13

Applicant: ABB Technology Ltd.

Inventor： Debrup Das ,  Jiuping Pan ,  Joseph A. Carr

IPC: F03D9/00

CPC classification number: F03D9/255 ,  F03D9/257 ,  H02H7/125 ,  H02H9/041 ,  Y02E10/72

Abstract: A wind turbine is disclosed having a generator and rectifier and structured to provide direct current power that in one form is medium voltage direct current (MVDC). The wind turbine includes a crowbar circuit arranged to protect from a condition such as an overvoltage. The crowbar can be activated based on a voltage measurement or rate of change of voltage. A resistor can be coupled to the crowbar to absorb excess power provided by the generator during the overvoltage condition. Individual wind turbines in a wind farm can each have individual crow bars that can be activated based on local measurement of a voltage condition. In some forms the crowbar can be coupled with a transformer, for example coupled with a tertiary winding of a three winding transformer.

Abstract translation: 公开了一种具有发电机和整流器并被构造成提供直流电力的风力涡轮机，其以一种形式是中等电压直流（MVDC）。 风力涡轮机包括布置成防止诸如过电压的状况的短路电路。 可以根据电压测量或电压变化率来激活撬棒。 电阻器可以耦合到撬棍以吸收在过电压状态期间由发电机提供的过多功率。 风力发电场中的各个风力涡轮机可以各自具有可以基于电压状况的局部测量来激活的单独的乌鸦棒。 在一些形式中，撬棍可以与变压器耦合，例如与三绕组变压器的三次绕组耦合。