Comparison Of Various PWM Techniques On A Novel Cascaded Multilevel Inverter Topology

Abstract

Multilevel inverter plays a very important role in the area of high power medium voltage energy control. In this paper comparison of various pulse width modulation techniques has been provided likenearest level technique, Phase Disposition technique, Phase Opposition Disposition technique and Alternate Phase Opposition Disposition technique. Initially these techniques have been applied and the vrms, irms and total harmonic distortion have been studied on an existing seven level topology.  From the concepts and results obtained in this stage a novel cascaded fifteen level multi inverter topology has been proposed. The proposed topologypresents fifteen-levels of voltage with reduced harmonic distortions and improved Vrms values. The simulation of this inverter is done using MATLAB/SIMULINK software. In order to verify its efficiency as well as feasibility, the results obtained after simulation have been implemented on the hardware.