Fuzzy controller in the largest double-fed wind power generator in the study of capture system

For the variable pitch grid-connected wind turbine maximum power tracking and improved power quality problems, using new double-fed machine constitutes a wind turbine, based on vector control and the whole fuzzy controller is used to achieve brushless doubly-fed variable speed constant frequency motor control. Self correct factor of fuzzy was introduced in the fuzzy controller design process. The fuzzy controller with parameters self-adjusting is changed different control requirements. Made below rated wind speed, according to wind speed changes, control of motor speed is used to obtain the best tip-speed ratio to achieve maximum power tracking and variable-speed constant frequency. Simulation results show that compared with conventional PID controller can more effectively reduce the vibration. Rapidly to achieve steady state, wind energy conversion system efficiency and quality is increased.