Induction motor rotor: Energy efficiency improvement on economic and environment

Nowsday, the induction motor is currently he most exploited machine for industrial motor global. Its ease of use, self-starting, small in size, light in weight, high efficiency, less maintenance and cheap per same power rating which usually met the required characteristics for industry as attract its application in industry. It is presented from small horse-power up to thousands of horse-power. Induction motor was employed in application such as small pumps, conveyors, drilling machines, fans, blowers and escalators. The increment in energy efficiency was investigated using copper for rotor bar slots. Normally, the copper losses in rotor part of induction motor is contributing to the energy losses. The work proposed a new design for the rotor part, with modified rotor bar type, bar size and rotor bar design. This work has been investigated using two methods, specifically, MotorSolve (IM) software and theoretically calculation. A set of simulation was showed the significant improvement in the energy efficiency for the new design. The theoretical calculation utilised MATLAB simulations. The comparison on efficiency between the existing design and the proposed new design was carried out using MotorSolve (IM) simulation. The result showed that the proposed new design was increased energy efficiency of 76.92% as compared to exiting design of 74%. The result was proven using MATLAB. For energy and cost saving, a new design rotor was saved 154kWh/year and utility bills of RM60.20/year for each motor. Lastly, a cost estimate for 100,000 pieces of induction motor with a new rotor bar type design is presumed and shows the value was saved nearly RM6.02million.Nowsday, the induction motor is currently he most exploited machine for industrial motor global. Its ease of use, self-starting, small in size, light in weight, high efficiency, less maintenance and cheap per same power rating which usually met the required characteristics for industry as attract its application in industry. It is presented from small horse-power up to thousands of horse-power. Induction motor was employed in application such as small pumps, conveyors, drilling machines, fans, blowers and escalators. The increment in energy efficiency was investigated using copper for rotor bar slots. Normally, the copper losses in rotor part of induction motor is contributing to the energy losses. The work proposed a new design for the rotor part, with modified rotor bar type, bar size and rotor bar design. This work has been investigated using two methods, specifically, MotorSolve (IM) software and theoretically calculation. A set of simulation was showed the significant improvement in the energy effici...