A NEW APPROACH TO PERFORMANCE ANALYSIS OF CHOPPER CONTROLLED D.C. MOTOR DRIVE |
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| Authors: | D R KOHLI SHAMS U AHMAD ALI ATHAR KHAN |
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| Affiliation: | 1. Department of Electrical Engineering , University of Roorkee , Roorkee, 247672, India;2. Department of Electrical Engineering , Aligarh Muslim University , Aligarh, India |
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| Abstract: | ABSTRACT An analytical method for performance analysis of a d.c. separately excited motor fed from a chopper is presented. The motor input voltage is represented as a series of step-voltages with a time phase difference. The system equations are solved to obtain closed-form solutions for motor current and speed, for transient as well as steady state conditions. The method presented is superior to existing methods in that the solution is in closed-form, and does not make recourse to recursive numerical techniques. The solutions for steady state condition corresponding to any set of operating conditions (voltage, chopper duty factor, load torque) can be directly obtained. The computational effort and time needed is therefore extremely small as compared to other methods. |
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