一种适用于输入输出频率接近或相等电机驱动系统的组合式模块化多电平矩阵变换器

The modular multilevel matrix converter (M3C) is a topology that can directly realize the ac–ac power conversion and is widely used in high-power motor drive applications. However, when the motor frequency is close to the grid frequency, the voltage fluctuation problem of the submodule capacitors worsens. The traditional method of reducing capacitor voltage fluctuations is to inject common-mode vo...