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针对六相电压型逆变器供电的双定子感应电机,提出一种基于矢量空间解耦变换的改进型24扇区SVPWM调制策略.该调制策略不仅继承了传统方法易于数字化实现、提高逆变器开关频率、抑制定子谐波电流等优点,而且克服了传统方法在每个采样周期内两相桥臂的开关管同时动作的问题.此外,改进型方法对应的连续型方法还可以通过等效的载波比较PWM方法进行等效实现,显著简化了算法的复杂程度,节省计算资源,更易于DSP等计算芯片的数字化实现.通过仿真和实验结果,验证了改进型24扇区SVPWM方法和等效载波PWM方法的正确性和可行性.“,”A modified space vector pulse width modulation (SVPWM) strategy based on vector space decomposition has been proposed in this paper,which is suitable for six-phase asymmetrical dual stator induction machines (DSIMs).The proposed SVPWM technique inherits the advantages of the traditional one such as being easy to implement digitally and allowing a switching frequency increase with significant stator harmonic currents reduction.It also overcomes the disadvantage that two transitions belonging to two inverter legs occur at the same time during a sampling period.Above all,the continuous type of the modified 24-sector SVPWM technique can also be realized by an equivalent carrier-based PWM method,which is much simpler and easier in terms of the calculation complexity and the digital signal processor (DSP) implementation than its SVPWM counterpart.Simulation and experiential results verify the validity and effectiveness of the proposed SVPWM strategy and the equivalent carrier-based PWM realization.