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发明授权
CN101005204B 操作双馈感应发电机的系统和方法 有权

操作双馈感应发电机的系统和方法
摘要：
操作双馈感应发电机的系统和方法；一种保护系统和保护方法被设置用于在电网故障期间保护双馈感应发电机(16)和变速箱(24)。该保护系统包括多个受控阻抗装置(44)。所述受控阻抗装置中的每个被耦合在双馈感应发电机的定子绕组的相应相与电网侧转换器(26)的相应相之间。该保护系统也包括控制器(32)，该控制器(32)被配置用于响应于公用电网电压和公用电网电流中的至少一个的变化来耦合和去耦合多个受控阻抗装置中的一个或多个中的阻抗。
摘要（英）：

The invention relates to a system and method of operating double fed induction generators. A protection system and a protection method are provided for protecting a double fed induction generator (16) and a gearbox (24) during a grid fault. The protection system includes a plurality of controlled impedance devices (44). Each of the controlled impedance devices is coupled between a respective phase of a stator winding of the double fed induction generator and a respective phase of a grid side converter (26). The protection system also includes a controller (32) configured for coupling and decoupling impedance in one or more of the plurality of controlled impedance devices in response to changes in at least one of a utility grid voltage and a utility grid current.

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