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An Improved Method for Starting of Induction Motor with Reduced Transient Torque Pulsations

Abstract

Three phase induction motor produces severe starting torque pulsations. This causes shocks to the driven equipment and damage to the mechanical system components. In this method a novel method for starting of induction motor is proposed. The scheme depends on initial switching instances at which each phases of motor terminals are connected to the supply. A mathematical model for a three phase induction motor is developed in matlab/simulink and observed the effectiveness of the system in the elimination of torque pulsations. Hardware is implemented with an AC voltage controller using skt 24/12e thyristors. The gate control is provided with 89C51 microcontroller and the simulation results are verified through the hardware.

Nithin K S, Bos Mathew Jos, Muhammed Rafeek

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