Analysis of energy savings for rewinding and replacement of industrial motor

This study analyzed and estimated economic viability of introducing high efficiency motors compared to the rewind and standard motor in the industrial sector. Efficiency of a motor is degraded when it is rewound. This analysis identified that it is better to rewind a larger motor compared to a smaller motor. It has been found that a high efficiency motor can save an average 5.5% of energy compared to a standard motor. In addition, payback period has been found to be reasonable when a motor is operated at 50% load. It has been estimated that 67,868 MWh/year energy and 4, 343, 531 US$/year bill can be saved for introducing high efficient motors. The present study found that rewind motors of larger size and high efficiency motors are economically viable.