Matrix converter is a new type of power converter in the wind energy conversion system. Aiming at realizing the control strategy easily and reliably， an improved voltage control strategy is proposed based on the research on double line-to-line voltage control strategy of matrix converter. The improved double line-to-line voltage control strategy simplifies switching combinations and derives a unified formula to calculate the duty ratio. The improved strategy can steadily reduce computational load， facilitate programming and enhance the efficiency and real-time performance of the program. The matrix converter is modeled with MATLAB/Simulink and an experimental prototype is also built up. The simulation and experimental results verify the feasibility and validity of the improved double line-to-line voltage control strategy.