Design and implementation of new asymmetric fifteen level inverter with minimum number of switching devices [articol]

Abstract

This paper proposes a new asymmetrical type fifteen level inverter with minimum number of power electronic switches to reduce THD. The proposed inverter consist of three DC voltage sources, seven main switches and four switches of H-bridge inverter to generate fifteen level output. The proposed multilevel inverter is very simple to construct and is suitable for medium voltage and high power applications. Different methods of calculating the switching angles are presented and the results are compared. The performance of the proposed fifteen level inverter is compared with other topologies. The simulation is performed using MATLAB/SIMULINK software to verify the function of the proposed inverter.