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Single‐phase multilevel inverter based on switched‐capacitor structure

This study proposes a new topology for multilevel inverters based on switched-capacitor structure. The proposed topology uses capacitor charged/discharged characteristic to boost the output voltage without employing magnetic elements. The proposed circuit configuration has fewer components, including switches, voltage sources, and capacitors comparing with the conventional similar topologies. A phase disposition pulse-width modulation method is used to enhance the output waveform quality of the proposed inverter. Nine-level and 17-level configurations are simulated. To verify the operating principle, the experimental results for a nine-level inverter topology are presented.