双馈风力发电机等效电路参数的精准算法

Precision Algorithm for Equivalent Circuit Parameters of Doubly Fed Induction Generator

变频器能否与双馈风力发电机很好的匹配,将取决于发电机的等效电路参数精确与否,这也将影响整个机组工作性能的好坏。基于电机的基本等效电路,通过对电机在空转、堵转和转子开路三种工况下的电路方程推导,得出了一种分离式电机等效电路参数的计算方法,以一款双馈风力发电机为模型,进行了验证计算,证明了该计算方法的精准性。

Whether the inverter can match the doubly fed induction generator(DFIG)well will depend on the accuracy of the equivalent circuit parameters of the generator,which will also affect the performance of the entire system.Based on the equivalent circuit of the generator,and the circuit equations under the three conditions of idling,locked roter and opened rotor,The separation method for equivalent circuit parameter is proposed.The sample motor test data show that the calculation method is proved to be accurate.