Modified H-Bridge Inverter with Reduced Number of Switching Devices

Abstract

In this paper, a modified topology for developing H-bridge inverter is proposed which the number of components is lower than other inverters as well as the proposed inverter generates a high number of level with low total harmonics distortions. In the first, the new developed h-bridge inverter is proposed and then a cascaded connection of this inverter to increase the number of levels is presented. Three different methods are proposed to determine the DC power sources magnitudes and among them, the best algorithm is chosen for comparison the proposed cascaded inverter with other cascaded inverters. Finally, the proposed cascaded inverter consist of two proposed basic inverters to generate thirty-three voltage levels is simulated to evaluate the performance of the proposal.Index Terms-developed H-bridge inverter; cascaded inverter; reduced components.