Multilevel Inverter with Optimal Reduction of Power Semi-conductor Switches

Abstract

Multilevel Converters is the most emerging topic of research now-a-days due to its enormous various industrial applications like cement factory, ceramic industry, aerospace applications, marine applications and many more. Besides this multilevel inverter enables the usage of renewable energy sources i.e. wind, photovoltaic, fuel cells that can be easily interlinked to a multilevel converter system for the higher power rating applications. In this paper, a novel 9-level and 17-level single phase multilevel inverter has been designed, analyzed, described, and verified in MATLAB/Simulink environment. The prototype model is developed in laboratory and the simulated results of 9-level inverter is confirmed by the corresponding experimental results. In this paper, the comparison chart between the proposed topology and some recent proposed topologies (both the symmetrical and asymmetrical topologies) has been included as well in relations of the total number of power semi-conductor devices, driver circuits, DC supply sources/capacitors and the total components required.