Load test of 0.5HP AC induction motor using coupling system

Abstract

Induction motors are used worldwide as the workhorse in industrial application such as fan, pumps, machine tools, elevators and conveyors. It offers users simplicity, rugged construction, easy maintenance, relatively high efficiency and cost effective pricing. These factors have promoted standardization and development of a manufacturing infrastructure that has led to a vast installed base of motors. Thus, improvements in the efficiency of the electrical drives would offer significant effects in reducing industrial electrical energy usage. There are various types of method in determining the efficiency of induction motors. Among them are No-Load Test, Blocked Rotor Test, DC Resistance Test and Load Test for rotating machine to get various data on the induction motor. A proper parameter calculation need to be carried on to obtain the range of specification of the induction motor such as the total resistance,the leakage impedances, the losses estimation, stator current, rotor current and so on. Finally, the efficiency of the AC Induction Motor is determined.