Application of three vectors modulation strategy in reactive power compensation of grid connected doubly fed wind power generation system

This paper presents a three-vector modulation strategy to drive a Two-Stage Matrix Converter (TSMC). It is the first time to apply the three-vector modulation strategy to the reactive power compensation for the doubly fed wind power generation system, which ensures the normal operation of the wind power system and supplies reactive power to support network voltage at the presence of three-phase voltage dip. To support the theoretical analysis, the feasibility and reliability of the proposed method are verified by simulations, under the normal condition and the condition of 10% voltage dip, respectively.