基于滑差角估计的直接电压控制以扩展独立运行双馈感应发电机不对称负载支持范围

The control system for stand-alone doubly fed induction generator (DFIG) is commonly based on the “sensorless” direct voltage control. This paper adopts the direct voltage control and employs negative-sequence compensation through rotor-side converter to support asymmetric “unbalanced” loads. This paper demonstrates the limitation of the conventional direct voltage control to obtain the slip angle...