IMPACT OF LOAD TORQUE VARIATIONS ON THREE PHASE INDUCTION MOTOR TO ENHANCE ITS PERFORMANCE

Abstract

This paper presents the impact of load torque variations on the three phase induction motor for improved output performance. The objective was realized with the aid of Matlab/Simulink software. The induction motor used in this work are of specifications 3-phase, 4.5 KW, 50 Hz, 2 poles, 210 V, load torque (20 – 60) Nm. The transient and steady state responses of the motors were obtained, which revealed that that increase in load torque leads to decrease in motor speed, increase in load torque resulted to corresponding rise in stator resistanc. Similarly,  increase  in load torque  leads to  an increase in rotor resistance and  corresponding increase in  current.