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发明公开
EP2706643A3 Method and systems for operating a wind turbine using dynamic braking in response to a grid event 审中-公开
响应于电网事件使用动态制动来操作风力涡轮机的方法和系统

Method and systems for operating a wind turbine using dynamic braking in response to a grid event
摘要：
A method and system (130) for dissipating energy in a direct current (dc) bus (137) of a doubly-fed induction generator (DFIG) converter during a grid event is described. In one aspect, the method comprises monitoring operating conditions of an electrical system, the electrical system comprising at least a DFIG generator and a line side converter (136) and a rotor side converter (134) connected by a dc bus (137) having a dynamic brake (142) connected thereto; detecting an overvoltage on the dc bus (137) or a condition indicative of an overvoltage on the dc link is detected, the overvoltage on the dc bus (137) or condition indicative of the overvoltage caused by a grid event; and causing energy in the dc link to be dissipated using the dynamic brake (142).
摘要（中）：

描述了用于在电网事件期间耗散双馈感应发电机（DFIG）转换器的直流（dc）总线（137）中的能量的方法和系统（130）。 在一个方面，该方法包括监测电气系统的运行状况，该电气系统至少包括由直流总线（137）连接的至少一个DFIG发电机和一个线路侧转换器（136）和一个转子侧转换器（134） 与其连接的动力制动器（142） 检测直流母线（137）上的过电压或表示直流母线过电压的状况，直流母线（137）上的过电压或表示由电网事件引起的过电压的状况; 并且利用动态制动器（142）使直流链路中的能量消散。

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