An adjustable PI control technique for a wind energy conversion system based on a PWM-CSC and PMSG

conversion systems are based on DFIG technology. Nevertheless, the proposed wind energy conversion system is a good alternate due to its adaptive control with hysteresis controller which can improve the efficiency and reliability. It has capable of controlling DC current according to the wind velocity independently of the DC voltage. Capacitive filters placed on the AC side, which are required for safe commutation can create resonances with the power grid. Maximum tracking point algorithm is modified interms of the DC current in the PWM-CSC. The adaptive PI control which is selftuned based on a linear approximation of the power system calculated at each sample time. A model reference control is also included in order to reduce the post-fault voltages. Simulation results demonstrate the advantages of the proposed control.