A New Control Strategy for Doubly-Fed Induction Generator for Wind Power Generation

This paper proposes an active power control method for Doubly-Fed Induction Generator (DFIG) to convert wind power to electric power of constant frequency current with unity power factor. Instead of using conventional transformation between a-b-c frame and d-q frame, the proposed method independently adjusts the magnitude and phase of the stator output. The achieved response characteristic of the proposed scheme is similar to that obtainable from conventional vector control scheme. However, the control algorithm is simplified. The principle is verified by experimental results.