双馈风电机组应对严重对称电网故障所需转子电流与电压的机理分析

Doubly-fed induction generator (DFIG)-based wind turbines is prone to suffering from overcurrent during severe grid faults, due to the high electromotive force. To overcome this problem, various fault ride-through (FRT) control strategies are proposed, but they do not theoretically elaborate how to coordinate the rotor current and voltage to ride-through severe grid faults under the limited capaci...