A 13-Level Switched-Capacitor-Based Boosting Inverter

Abstract

A new boosting multilevel inverter with switched-capacitors is presented in this brief. By employing 13 switches, two diodes, and three capacitors, a 13-level voltage waveform is synthesized. The capacitor voltages are self-balanced as they are connected in parallel with the input voltage source for several instances in every fundamental cycle. A simple logic gate based pulse-width modulation scheme ensuring power balance among the capacitors is presented. Experimental results obtained from a laboratory prototype are presented for validating the operation and ability of the proposed inverter to boost the input by a factor of six. Finally, a detailed comparison with existing topologies proves the cost-effectiveness, a simpler structure requiring lesser space and footprint area of the proposed topology.