Optimized rotor slot shape for squirrel cage induction motor in electric propulsion application

Abstract

Design of squirrel cage induction motor for propulsion system is different from that of conventional design. Efficiency, power factor and locked rotor torque are important performance measures of a propulsion system. For an induction motor, the above mentioned parameters are expected to be high. In this paper, the effect of geometrical variations in rotor slot on the performance of induction motor is analyzed. The simulation results are presented for variation in different rotor slot shape. It shows that the shape of the rotor can effect on the performance of the induction motor. Hence, these findings may be helpful to the design engineers for choosing the proper slot dimensions.