公开(公告)号：US20150124496A1

公开(公告)日：2015-05-07

申请号：US14525614

申请日：2014-10-28

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Weifu YU ,  Anshuman TRIPATHI ,  Ravi KANDASAMY

IPC: F03D9/00 ,  H02J3/36 ,  H02P9/08 ,  F03D7/02 ,  H02P9/04

CPC classification number: F03D9/255 ,  F03D7/0224 ,  F03D7/026 ,  H02J3/36 ,  H02J3/386 ,  H02M1/36 ,  H02M5/4585 ,  H02M7/125 ,  H02P9/04 ,  H02P9/08 ,  Y02E10/723 ,  Y02E10/763

Abstract: The present invention relates to a method for charging a DC link of a power converter included in a wind turbine generator, the wind turbine generator comprising a generator side converter connected to an electrical generator and a grid side converter connectable, or connected, to an electrical grid through a grid circuit breaker, and a converter controller arranged to control at least the DC link, the DC link having a DC voltage level, the wind turbine generator comprising a wind turbine rotor arranged to rotate the electrical generator, wherein the method comprises rotating the wind turbine rotor whereby the electrical generator generates electrical power, rectifying the electrical power through at least one diode of the generator side converter in order to pre-charge the DC link to a DC voltage level, closing the grid circuit breaker when the DC voltage level is greater than a threshold level. The invention also relates to a wind turbine generator with a converter controller for controlling pre-charging of a DC link.

Abstract translation: 本发明涉及一种用于对包括在风力涡轮发电机中的功率转换器的DC链路进行充电的方法，所述风力涡轮发电机包括连接到发电机的发电机侧转换器和可连接或连接到电气 电网通过电网断路器，以及转换器控制器，其布置成至少控制DC链路，DC链路具有DC电压电平，风力涡轮发电机包括布置成旋转发电机的风力涡轮机转子，其中该方法包括旋转 风力涡轮机转子，由此发电机产生电力，通过发电机侧转换器的至少一个二极管整流电力，以便将DC链路预充电到DC电压电平，当DC电压 级别大于阈值级别。 本发明还涉及具有用于控制DC链路的预充电的转换器控制器的风力涡轮发电机。