Design optimization of 15 kW, 2-pole induction motor to achieve IE4 efficiency level with copper die-casting

This paper describes the design and simulation of 15 kW, 2 pole, 50 Hz, three phase induction motor to achieve IE4 efficiency level as defined by the International Electrotechnical Commission (IEC). For achieving higher efficiency, the motor is designed, optimized and simulated with copper die-cast rotor and low loss electrical steel. The simulation method is first validated by comparing with the test results of standard IE3 motor. The same simulated model was taken as reference to design the IE4 motor. This design solution having IE4 efficiency is achieved without changing the stator geometry and frame size.