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1. 发明公开

EP2360375A2 Method for operating a power dissipating unit in a wind turbine 有权转让
标题翻译： Verfahren zum Betreiben einer Stromverteilereinheit在einer风力发电机
公开(公告)号：EP2360375A2
公开(公告)日：2011-08-24
申请号：EP10195387.5
申请日：2010-12-16
申请人： Vestas Wind Systems A/S
发明人： Gupta, Amit Kumar , SahukariI, Sridhar
IPC分类号： F03D7/02 , F03D7/04 , F03D9/00
CPC分类号： F03D7/042 , F03D7/0272 , F03D7/0284 , F03D9/255 , F05B2270/1016 , H02J3/386 , H02P3/22 , H02P2101/15 , Y02E10/723 , Y02E10/763
摘要： A variable speed wind turbine is provided. The wind turbine comprises a generator, a power converter for converting at least a portion of electrical power generated by the generator wherein the power converter comprises a generator side converter, a grid side converter and a DC (direct current) link therebetween, a power dissipating unit operatively coupled to the DC link and a controller. The controller is adapted to determine a DC link voltage error signal, the DC link voltage error signal being the difference between a function of an actual DC link voltage and a function of a predefined reference DC link voltage, determine a DC link error power based on the DC link voltage error signal, determine a feed forward power and generate a duty ratio for operating the power dissipating unit based on the DC link error power and the feed forward power.
摘要翻译：提供了一种变速风力涡轮机。风力涡轮机包括发电机，用于转换由发电机产生的电力的至少一部分的功率转换器，其中功率转换器包括发电机侧转换器，电网侧转换器和它们之间的DC（直流）连接，功率消耗可操作地耦合到DC链路的单元和控制器。控制器适于确定直流链路电压误差信号，直流链路电压误差信号是实际直流链路电压的功能与预定义的参考直流链路电压的函数之间的差异，基于 DC链路电压误差信号，基于直流链路误差功率和前馈功率确定前馈功率并产生用于操作功率耗散单元的占空比。

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