Taking two power cells cascaded per phase as an example, the topology of cascaded Hbridge multilevel converter and carrier phase-shifted SPWM (CPS-SPWM) modulation strategy are introduced.

• 以单相两功率单元级联为例,阐述了级联H桥五电平变流器的拓扑结构和载波相移SPWM(CPS-SPWM)调制策略。