Analysis and simulation of a new topology of single phase multi-level inverter

Abstract

Multilevel inverters are popular for their ability to enhance voltage level, reduce harmonic distortion and eliminate the need of output filters. They are mainly comprised of different combinations of dc voltage sources and power electronic switches and the number of voltage levels are dependent on the switching scheme. This paper proposes a new topology of single phase multilevel inverter. The new topology uses a combination of series connection of isolated dc sources and the developed H-bridge. This paper gives a detailed analysis of the proposed topology using both symmetrical and asymmetrical dc sources. Furthermore, the proposed topology has been compared with the conventional cascaded multilevel inverter and some new topologies published in recent literatures. Finally, the operation of the proposed topology has been verified with computer simulation using MATLAB/Simulink.