Two Novel Switched-Capacitor Based Multi-Level Inverter Topologies

Abstract

In this paper, two new switched-capacitor based 5 and 9-level inverter topologies have been suggested. Simple structure, natural voltage balancing of capacitors (easy control strategy), low voltage stress on switches as well as step-up capability (proposed 9-level topology) are the main merits of suggested topologies. Also based on comparison results, the suggested topologies utilize decreased devices (switches, gate driver circuits, diodes and capacitors) for producing the same count of levels. The suggested topologies can effectively supply the R-L loads. The simulation results obtained from PSCAD/EMTDC software validates the effectiveness and correct operation of suggested structures.