Article
A Comparative Analysis of a New Approach to Induction Motor Starting
A polyphase induction motor's starting current is five to eight times its rated current when it is started from rest with full voltage impressed. Such a motor's huge line current is undesirable since it may cause a sudden reduction in the supply circuit's voltage and have an unfavorable effect on other connected loads or devices. Therefore, it is common practice to use auto transformers, star delta starters, and other devices to start such motors at a lower voltage. This work presents a novel technique for starting polyphase induction motors without the need for a primary voltage compensator, which lowers the inrush of the starting current. The motor's appropriately accelerated rotor is then driven in the designated direction of rotation using a crank-driven system. After that, the motor is tested with its rated voltage applied. Through oscillographic recordings obtained from experiments, where the results are contrasted with the various beginning approaches, this is illustrated with a case study on a three-phase, five-horsepower NGEF motor.
Full Text Attachment
