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Modeling and Analysis of Open and Closed Loop Induction Motor Fed PWM Inverter

Khadim M. Siddiqui 1, Kuldeep Sahay 1, and V. K. Giri 2
1. Department of Electrical Engineering, Institute of Engineering & Technology, Lucknow, India
2. Department of Electrical Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur, India
Abstract—Squirrel Cage Induction Motors are the widely used motors for industries due to its robust design, simple construction and low operational costs. The squirrel cage induction motor fed into Sinusoidal Pulse Width Modulation (SPWM) inverter presents the greater advantages on cost and energy efficiency as compared with other industrial solutions for varying speed applications. In the present paper, an open and closed loop 0.5HP, 50Hz, 1725rpm squirrel cage induction motor fed into PWM inverter has been developed and analyzed in the recent MATLAB/Simulink environment. It has been observed from the obtained results of open and closed loop models, the closed loop model gives better results as compare to open loop with reduced harmonics. Four signature parameters of motor have been considered for the analysis purpose in both models (open/close). These are stator current, rotor current, rotor speed and developed electromagnetic torque. The torque control method has been used for controlling the induction motor in closed loop due to its advantages over field-oriented control method.
 
Index Terms—open loop model, close loop model, induction motor, PWM inverter, MATLAB/Simulink

Cite: Khadim M. Siddiqui, Kuldeep Sahay, and V. K. Giri, "Modeling and Analysis of Open and Closed Loop Induction Motor Fed PWM Inverter," International Journal of Electronics and Electrical Engineering, Vol. 4, No. 6, pp. 474-481, December 2016. doi: 10.18178/ijeee.4.6.474-481
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