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In wind power generation systems, the turbulence of the wind will result in power variations and thus affect the DC link voltage ripples and the power quality in the grid. A fuzzy logic controller is designed in this paper for reducing the DC link voltage ripples of the permanent magnet wind power generation system. The simulation model is built under Matlab/Simulink surroundings and different input wind models are studied. The correctness and effectiveness of the proposed fuzzy logic controller are verified by the simulation results.