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Condition monitoring of squirrel cage induction motors fed by PWM-based drives using a parameter estimation approach

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5 Author(s)
Mirafzal, B. ; Dept. of Electr. & Comput. Eng., Marquette Univ., Milwaukee, WI, USA ; Fateh, F. ; Yeh, C. ; Povinelli, R.
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A rotor condition monitoring technique is presented in this paper based on a parameter estimation approach. In this technique, the stator currents, voltages and motor speed are used as the input signals, where the outputs will be the rotor's inductance, resistance and consequently rotor time constant. This approach is verified by simulation of two different induction motor cases. These simulations are buttressed by experimental data obtained for a 2-hp induction motor in the case of healthy as well as one, three and five rotor bar breakages. In these tests, the induction motor was energized from a PWM-based drive, in order to demonstrate the capability of using this method for rotor condition monitoring purposes.

Published in:

Power System Technology, 2004. PowerCon 2004. 2004 International Conference on  (Volume:2 )

Date of Conference:

21-24 Nov. 2004