Abstract：In case that the rotor of doubly-fed induction generator (DFIG) is still excited by AC/DC/AC converter during non-severe fault condition, the excitation and regulation characteristics of rotor side converter (RSC) have large influence on the fault current characteristics of DFIG. In this paper, the dynamic response of RSC is studied when the inner rotor current control loop is designed to be first order or second order system. Meanwhile, the simplified calculation models of rotor fault current are established. Based on it, the fault current of DFIG during non-severe fault condition is studied and the analytical expressions are obtained. Finally, simulation examples in PSCAD/EMTDC demonstrate the theoretical analysis results.
孔祥平, 张哲, 尹项根, 何茂慧, 王菲. 计及励磁调节特性影响的双馈风力发电机组故障电流特性[J]. 电工技术学报, 2014, 29(4): 256-265.
Kong Xiangping, Zhang Zhe, Yin Xianggen, He Maohui, Wang Fei. Fault Current Characteristics of DFIG Considering Excitation and Regulation Characteristics. Transactions of China Electrotechnical Society, 2014, 29(4): 256-265.
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