Thermal evaluation of space vector PWM based four- level dual inverter fed open -end winding induction motor drive

Abstract

Multilevel inverters are increasingly being used due to their superior performance compared to two-level inverters. Different circuit topologies on multilevel inverters have been extensively researched. Conduction and switching losses of IGBT in multilevel inverter is the key factor which could influence the converter reliability and efficiency. In this paper, thermal evaluation is described for four level Neutral Point Clamped inverter and four-level dual inverter fed open-end winding induction motor drive using Space Vector Modulation.