Abstract
Traditional MPPT control strategy for variable speed wind turbine was dependent on turbines parameters, the algorithm was difficulty in realize system. A new MPPT based on fuzzy control was presented to improve the efficiency of wind power generation system. This MPPT control strategy adjusts the proportion coefficient of power curve according to the operation states and change perturb step by power characteristic point slop, the power characteristic of wind turbine was analyzed and the strategy of dynamic power curve tracking mode was described, with fuzzy controller designed for this MPPT tracking, the tracking speed was improved, the oscillation around MPP was reduced, the control performance confirmed by MATLAB simulation.
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