Fuzzy logic control for optimal rotating speed tracking of Doubly fed induction generator

In this paper, an optimal rotating speed tracking method is proposed for doubly-fed induction generator (DFIG) wind turbines. The method employs a fuzzy logic controller to capture the maximum wind power. The generator output power increment, rotating speed increment and the judgment of optimal speed direction signals are all adopted in fuzzy logical system to improve the performance of the conventional method to a certain extend, and simulation results indicate the effectiveness of the proposed method.