An approach of hybrid modulation in fusion seven-level cascaded multilevel inverter accomplishment to IM drive system

Abstract

A new modulation topology of seven level cascaded multilevel inverter fed with induction motor drive system with considerable reduction of semiconductors switches and DC voltage sources has been developed. In recent day's Multilevel inverter (MLI) technologies become an incredible main choice in the area of high power medium voltage control. There is hindrance in the vein of higher levels because of using more number of semiconductor switches. It may lead to huge size and increases the cost of the inverter. So the proposed method is well suited for a high power application and it is built with one DC source and six semiconductor switches. This paper is a simple and flexible technique to reduce common-mode voltage for a seven level hybrid cascaded inverter. The MCHBMLI is established based on five levels H-bridge cascaded inverter. This method also reduces the switching losses and is simple to be implemented in a common processor. This topology has only one dc source, and diverse voltage levels are generated by using this voltage source along with floating capacitors charged to voltage levels. Total Harmonic Distortion obtained from the above HPWM techniques. The Seven level MCHBMLI circuit is simulated and verified by using MATLAB/Simulink.