A Space Vector Based Zero Common-Mode Voltage Modulation Method for a Modular Multilevel Converter

A modular multilevel converter (MMC) can generate different common-mode voltage (CMV) values due to the high-frequency changing of switching state under various modulation strategies. The dv/dt will produce current in equivalent loop ground, which affect insulation and shorten life equipment. To eliminate effect on MMC operation, a elimination strategy (0CMV-SVPWM) is proposed for five-level space vector pulse width (SVPWM) by using that does not as reference this paper. studied analyzed rapid prototype development experimental system based RT-LAB verify feasibility effectiveness strategy.