A new general topology for asymmetrical multilevel inverter with reduced number of switching components

Abstract

In the modern era, demand for clean and better quality electric power supply is growing in various industries and home consumers. As conventional two level inverters are not able to provide good quality power, multilevel inverters are becoming more popular due to there ability to generate output voltage with less harmonics. In this paper, a new multilevel inverter topology with different magnitude of dc voltage sources have been proposed that requires lesser number of circuit components as compared to other topologies for same levels in output voltage. In the proposed topology, eight switches are required for generation of fifteen level single phase output voltage. The proposed topology is simple and can be extended easily to get more number of levels in the output voltage. All positive and negative levels as well as performance parameter in term of Total Harmonic Distortion (THD) in the output voltage generated by proposed MLI have been evaluated using simulation in MATLAB environment. The operational accuracy of proposed topology in generating all levels are confirmed by simulation results.