Abstract
This paper summarizes the development process and the investigation of 60kW induction motor for electric vehicle. In the traction motor, performance improvement of an induction motor using copper die-casting based on multi-gate process is presented. The copper die-casting motors can reduce the size of motors, the loss of rotor, and material costs. The electromagnetic, thermal, mechanical design and analysis results are also introduced to satisfy the design and the performance requirements. In order to analyze losses accurately of induction motor, commercial finite element analysis is done considering PWM voltage and thermal characteristics by using lumped-circuit parameters. The experimental tests are also carried out for the validity of EV traction motor design.
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