A Three-phase Thirteen-level Voltage Source Inverter with Inherent Gain

Abstract

Switched Capacitor Multilevel Inverters (SCMLIs) provide advantages such as integrated voltage boosting capability; and easy voltage balancing of capacitors. However, many existing SCMLI designs are primarily intended for single-phase applications, necessitating three separate DC sources for three-phase applications. This work introduces a novel SCMLI capable of generating seven voltage levels at each pole, including positive, negative, and zero levels, and thirteen levels in the line voltage. Significantly, the proposed inverter requires only a single input DC source for three-phase operation. In order to validate the proposed SCMLI topology, both simulation and experimental results are presented.