The doubly fed induction generator(DFIG) has been widely used in wind power generation system. It can alters speed of the rotor according to change of the wind speed, then contains the maximum tip speed ratio, in order to capture the maximum power from the wind energy. And the output frequency will not chang with the speed of generator. This paper studys the maximum wind energy capturing of DFIG. The theory analysis and simulation results based on MATLAB/Simulink demonstrate this control strategy is convenient and efficient.
