Modified Cascaded Multilevel Inverter with Reduced Component Count

Abstract

This paper introduces a basic module for symmetrical multilevel inverter. The proposed multilevel inverter is composed of cascaded basic unit with H-bridge. Multi-carrier based level-shift pulse width modulation scheme is developed to achieve the switching signals for switches. The proposed cascaded multilevel inverter results in reduction of number of components compared to other conventional and recent multilevel inverters. The performance and operation of proposed inverter is verified through simulation results through MATLAB/Simulink software and experimental implementation of single phase 11-level inverter.