模块化多电平变换器的灵活最近电平调制

Modular multilevel converter (MMC) is one of the most promising converter topologies for medium/high-voltage applications, where the nearest level modulation (NLM) is widely applied. However, the capacitor voltage balancing methods under this modulation mode exist some inefficient actions, which are useless for capacitor voltage balancing but lead to unnecessary switching of power semiconductor de...