Aiming at the problems as slow response and low power factor of conventional matrix converter when it is controlling the motor speed by PWM, the method applied to the matrix converter was presented which was based on the dual space vector modulation algorithm. The current space vector and voltage space vector was analyzed, the modulation strategy of virtual AC-DC-AC were deduced, the method of integrating two space vector modulation was put forward, and five space vector duty ratio was gotten, the two-way switch was drived. Based on the matrix converter, the four-quadrant operation of motor was realized,and the influence of harmonic current was reduced. At last, the matrix converter simulation model by using the S function in Matlab/Simulink was established, and the simulation and experiment on the system was conducted. The research results demonstrate the effectiveness and validity of the system.%针对传统矩阵式变换器在PWM变频调速时存在的响应速度慢、功率因素低等问题,将一种基于双空间矢量调制算法的控制策略应用到矩阵变换器中.展开了电流空间矢量和电压空间矢量的分析,推演出了等效虚拟交-直-交调制策略,提出了将2个空间矢量的综合调制采用相互嵌套的方法,从而得到了5个空间矢量的占空比,实现了对各个双向开关的驱动；在三相-三相矩阵变换器的基础上,该算法实现了电机的四象限运行,减少了电流谐波的影响；最后结合Matlab软件Simulink中的S函数,建立了矩阵变换器的仿真模型,并对系统进行了仿真与实验.研究结果表明,基于矩阵变换器供电的感应电机空间矢量控制系统具有一定的有效性和正确性.
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