New single-phase multilevel inverter using less elements count

Abstract

For the AC drive system, the multilevel inverter arrangement gives very favorable results, when there is requirement of lesser harmonic and high power application. This paper introduces a new multilevel converter topology that has more numbers of steps with lesser power electronics switches. This paper also describes a sinusoidal pulse width modulation technique which is suitable for both single phase and three phase system. This topology results in less number of switches, less number of carrier signals, hence reduction in area of installation and total cost and also has less complexity in the control system which improves the performance. The operation and performance of the proposed multilevel converter has been verified by the simulation results of a single-phase 11-level multilevel converter.