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Based on working Principle of the direct-drive wind power system’s grid-connected inverter was research, the mathematical model for inverter in Three-phase rotating coordinate was established and analyzed. A double-loop control strategy that based on feed forward decoupling were introduced, Meanwhile, combining the implementation effective control of the AC-side output current by the Space Vector Pulse Width Modulation method (SVPWM), it could generate sine wave current that had the same frequency and the same phase with network voltage. To a great degree, reduced harmonic pollution in power system, moreover, improved the Grid-connected wind power system’s efficiency and reliability. Keywords-Grid-connected inverter; wind power system; direct-drive; SVPWM; Simulink/Matlab

The Grid-connected Inverter of Simulation on Direct-drive Wind Power System Based on MATLAB