Development of an automated setup for dynamic evaluation of DC motor characteristics

Torque, speed and power are vital parameters for electric motor based applications. Extraction of motor torque-speed characteristics in real time involves complex and expensive instrumentation. An automated setup to evaluate such vital parameters is very essential in various research areas like power generation, energy conversion, vehicular technology etc. This paper presents a low cost automatic setup to evaluate any direct current motor characteristics on a dynamic application platform. The developed system comprises of sensors, signal conditioning system, data acquisition system and motor control unit. The system has been validated with a most commonly available shunt motor. The results obtained from the system leads to the conclusion that the proposed system is simple, reliable and cost effective which can be used to study any dynamically changing motor characteristics. The system can be effectively used in the development of various sophisticated test bed designs for pure electric and hybrid electric vehicles.

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