This paper summarizes the working principle of AC-DC-AC converter for variable speed constant frequency doubly fed wind power generation. The rotor-side converter adopts a grid-connected power generation decoupling control strategy based on maximum power point tracking, and the grid-side converter adopts a double closed-loop control strategy based on a combination of fixed switching frequency and grid electromotive force feedforward. A 110KW variable speed constant frequency doubly fed wind power generation simulation platform is constructed, and the effectiveness and feasibility of the above control strategy are verified through experimental results analysis.
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