Abstract
In this paper, a novel single-phase inverter topology is proposed, which was derived from the integration of the conventional voltage source inverter (VSI) with switched-capacitor (SC) dc-dc converters. The inverter circuit can provide a low ac output voltage from a high dc input voltage, using low-voltage devices (switches and capacitors). The modulation scheme is the same employed in conventional inverters and the capacitor voltages are self- balanced. The proposed topology is suitable for applications with high conversion ratios. A 2.5 kW prototype (800 V/220 V), which achieved a peak efficiency of 97.8 %, was built to show the feasibility of the novel inverter.
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