一种具有更高功率密度和效率的混合模块化多电平变换器系列

Modular multilevel converter (MMC) has many advantages of scalability, reliability and easy implementation, but suffers from large number of switching devices and capacitors. To improve the power density and efficiency for medium voltage applications, this article introduces a hybrid modular multilevel converter (HMMC) family through the combination of active neutral-point-clamped converter and ch...