In this paper

a kind of three-level grid connected wind power generation system based on sliding module control（SMC）and space vector modulation（SVM）is proposed. The nonlinear SMC is designed to control both active and reactive current of the connected grid. Since type NPC three level inverter adopts single DC voltage

neutral point（NP）balance and control is achieved by way of changing redundant small vector in the space vector modulation method. The grid connected active and reactive current performance controlled by the sliding module is proposed. Experimental results are provided to verify the fast dynamic performance

low THD of output current and good voltage balancing of DC-link capacitors of the NPC inverter.