MEASUREMENT AND ANALYSIS OF COMMON MODE VOLTAGE IN CASE OF MULTI LEVEL INVERTER FED INDUCTION MOTOR DRIVE

In this paper, a method, to reduce the common mode voltage (CMV) using diode clamped multilevel inverter (DCMLI) with Pulse Width Modulation Technique for three phase induction motor drive is presented. Simulation model of Conventional Two Level Inverter fed Induction Motor (IM); Three Level Diode Clamped Inverter fed IM, Five Level Diode Clamped Inverter (FLDCI) fed IM with POD SPWM Technique are developed under MATLAB-SIMULINK. A Miniature Model of Three Level Diode Clamped Inverter fed Induction Motor Drive is developed. Simulation Results versus Hardware Results are compared to examine Common Mode Voltage.