Abstract

Structure of variable speed constant frequency double fed wind power generation system (WPGS) was analyzed, and its model was established. Maximum power point tracking (MPPT) control, constant power control and vector control for WPGS were discussed. System operating performances were studied by simulation under sub-synchronous mode, synchronous mode and super-synchronization mode, unsymmetrical and symmetrical voltage fault. The result supplies evidences for improving the control performances of variable speed constant frequency double fed WPGS.

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