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This paper designs 1.SMW doubly-fed wind turbine inverter' s overall hardware circuit, meet fans overall stability and high efficiency " to achieve LVRT function, design a new CROWBAR circuit and control circuit of the circuit do improvement " study 1.SMW double-fed wind turbine inverter system control strategy, the rotor side converter using the stator flux oriented vector control technology, grid-side PWM converter using grid voltage oriented vector control technology to construct the inner current loop! Dual outer voltage loop PI control system is derived using the rotor active current and reactive current independent solutions Woe to the active and reactive power control strategy