According to the operating principle of VSCF doubly-fed wind power generation system，designed a double-fed wind generator no-load connected-grid control system based on the stator flux oriented vector control technology and network side converter grid voltage oriented vector control technology, and achieved flexible connection of double-fed wind generator and the active and reactive power decoupling control as well as maximum wind energy tracking. Simulated the doubly-fed wind generator no-load grid-connection based on Matlab/Simulink platform, and through test equipment verified it. The comparative analysis on the simulation and experiment results prove that the proposed method is correct and effective.