公开(公告)号：EP2589129A2

公开(公告)日：2013-05-08

申请号：EP11729050.2

申请日：2011-06-29

Applicant: Vestas Wind Systems A/S

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

IPC: H02J3/38 ,  H02H7/06 ,  H02H7/08

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，其输出端可经由动力传输路径连接到电力网，电力传输路径包括耦合到发电机的输出端的发电机侧转换器，耦合到电力网的电网侧转换器，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，提供了负载突降装置，其包括至少一个电阻器，多个开关以及多个电连接件，其通过至少一个电阻器将发电机的输出端与直流链路电连接 多个开关。 转换器系统故障和电网故障都使用一种常见且可配置的负载转储。 与两个单独的负载转储相比，转换器故障和电网故障相比，单个负载转储将需要较小的风力涡轮机空间。 因此，功率转换器系统的重量和尺寸可以减小。