Efficiency of Rewound Induction Motors in a Sugar Mill

To reduce energy consumption in any industry, it is necessary to determine the efficiency of rewound induction motor and compare it with the rated efficiency of that motor. If the efficiency of rewound induction motor is found near to the rated efficiency of that motor, then there is no need for any change. If the efficiency of rewound induction motor is found low as compared to rated efficiency of that motor, then it is better to replace that motor with new one. This paper explains the analysis done on rewound induction motors to determine the efficiency and comparison is done with new one. After analyzing, it was found that the payback period of rewound induction motors when replaced by new ones, exist within the range of 1.5 years to as less as 7 months.