With the increase of power level in wind power generation system, the Doubly-Fed Induction Generator(DFIG) Wind Power Generation System has been applied more and more extensively because it's unique advantages. Excitation converter which is comprised of grid-side converter (GSC) and rotor-side converter (RSC) is a conjunction part between the DFIG rotor and the grid. This paper firstly introduces the function of the grid-side converter, and derives the control strategy based on the mathematical model of GSC. Then, two RSC power control strategies are derived based on the mathematical model of DFIG. Finally, simulation has been done to verify the excitation converter control strategy which is proposed in this paper.
