PERFORMANCE ANALYSIS OF FS3P INVERTER FED INDUCTION MOTOR DRIVE USING SVPWM TECHNIQUE

Abstract

Electric Vehicles is call for today and tomorrow and induction motor drives are best chosen for the motional part in the system because of their enormous advantages. Three phase inverter fed induction motor drives are being used in the vehicles that have been made yet and research are still going to reduce the cost and complexity along with increased reliability to meet it at consumer ends without compromising its performance. In this dissertation an effort is made to reduce the cost of system by utilizing four-switch three phase inverter to feed induction motor drive. Also if conventional six switch inverter system incurred a fault in any one leg then shifting the motor load to four switch three phase alternatives would increase the reliability to great extent. Performance analysis for three induction motor drives with FS3P topology is presented along with the comparison between the conventional six-switch and proposed four switch inverter is made and discussed. Space Vector Pulse Width Modulation technique is used in proposed topology to produce three phase voltages at the output of four switch inverter, also SVPWM has advantages like better DC voltage utilization, Switching losses reduction and easier digital implementation. The validity of FS3P topology and performance of induction motor drives is verified by simulated results and MATLAB/SIMULINK platform has been utilized for simulation purpose.