Grid synchronization of brushless Doubly Fed Induction Generator using direct torque control

A direct torque control (DTC) method is developed for grid synchronization of Brushless Doubly Fed Induction Generator (BDFIG). The presented method and the dynamic model of BDFIG are conferred in a reference frame aligned to the stator of control machine. The proposed controller has high performance, i.e., grid connection with minimum current overshoot and fast dynamic response, during the BDFIG loading. The robustness and efficiency of the proposed controller are verified by both simulation and experimental tests.