Improved vector control for stand-alone brushless doubly-fed induction generator

The brushless doubly-fed induction generator (BDFIG) shows commercial potential for the wind-power generation and ship shaft power generation due to its brushless operation as compared with doubly-fed induction generator. This paper proposes an improved vector control scheme oriented on the power winding flux reference frame to achieve stable stand-alone operation. To improve the dynamic performance of the load disturbance, the feed-forward compensation from the power winding (PW) current is also introduced. Simulation results on steady state and transient state have been carried out to verify the control scheme.