According to the operating characteristics of AC excitation VSCF wind power generation system，the vector control technology is used for the control of the doubly-fed asynchronous wind turbine. Stator flux oriented vector control is used for generator-side converter，grid voltage oriented vector control is used for grid-side converter, and the two controllers operates together. The working state based on doubly-fed induction wind turbine operation state switches freely. Experimental results show that the control method achieves power two-way flow and ensures the double-fed induction wind turbine stably grid-connected operation.