A new 21-level asymmetrical multilevel inverter topology with different PWM techniques

Abstract

This paper presents an asymmetrical multilevel inverter topology with Different PWM techniques. This paper used one cell of conventional cascade H-Bridge Multilevel inverter structure with additional switch and voltage source to obtain high voltage level. The aim of this paper to enhance the voltage level at the output with using less switch. To improve the output voltage harmonic spectrum, the pulse width modulation (PWM) techniques used. The advantage of this proposed topology to reduce the circuit complexity and total harmonic distortion. The results of proposed 21-Level Asymmetrical multilevel Inverter are shown using MATLAB/SIMULINK software.