Unified Control for Generator-Side Converter of Multibrid Wind Power Generation System

Multibrid wind power generation system (MWPGS) has aroused more and more attention for its high energy conversion efficiency, high reliability, and flexible grid-connected power control. In order to capture maximum power from wind during wind speeds below-rated and enhance its security and reliability during wind speeds above-rated, a unified control strategy for MWPGS's generator-side converter is developed, which incorporates speed control, the improved hill-climb searching (HCS) control with a fuzzy logic controller(FLC) and pitch control. Simulation of control performance for MWPGS's generator-side converter is carried out in Matlab/Simulink, and the results verify the correctness and feasibility of the unified control strategy proposed in this paper.

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