Development of Copper Rotor of AC Induction Motor

The paper presents the development of copper rotor for AC induction motor i.e. it indicates only the rotary part of induction motor. The research project whose aim is to investigate efficiency of the induction motor, making use die cast copper rotor cage with H10 non-grain oriented electrical steel sheet as lamination. The study concerns to develop a prototype copper rotor of induction motor in the lab. In this study, developed copper rotor consists of 8 rotor slots, 0.5 hp, 4 pole induction motor. It has shown that copper rotor reduces the losses about 5.11 watts per unit and improved around 1.0% efficiency compared to existing aluminum rotor. The copper rotor has an annual energy savings of 40.32 kWh per year per unit and it can save RM 13.54