The Simulation of VSCF Wind Power System Based on Fuzzy-PID Controller

This paper presents an application of fuzzy controllers for improving the rapid response of wind energy captured. Because of the stochastic wind speed and uncertainty of wind power, one set of PID parameters can hardly achieve satisfactory control performance of the wind generator speed. We analyzed the relationship among the parameters of wind power generation system, and a mathematical model of it had been built. Based on the combination of PID and fuzzy control, the controller of fuzzy-PID was designed. This controller was used to change the stator voltage below rated wind speed, thus improve generator counter-torque and adjust the output power changing with wind speed quickly. Detailed simulation results have confirmed the stability of dynamic and speed response of fuzzy-PID is better than traditional PID controller, and has a satisfactory control performance.

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