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- Hicham Talhaoui, Arezki Menacer, Abdelhalim Kessal, and Ridha Kechida.
- LGEB Laboratory, University of Biskra, Algeria; University of Bordj Bou Arreridj, Algeria. Electronic address: h_Talhaoui@yahoo.fr.
- ISA Trans. 2014 Sep 1; 53 (5): 1639-49.
AbstractThis paper presents new techniques to evaluate faults in case of broken rotor bars of induction motors. Procedures are applied with closed-loop control. Electrical and mechanical variables are treated using fast Fourier transform (FFT), and discrete wavelet transform (DWT) at start-up and steady state. The wavelet transform has proven to be an excellent mathematical tool for the detection of the faults particularly broken rotor bars type. As a performance, DWT can provide a local representation of the non-stationary current signals for the healthy machine and with fault. For sensorless control, a Luenberger observer is applied; the estimation rotor speed is analyzed; the effect of the faults in the speed pulsation is compensated; a quadratic current appears and used for fault detection. Copyright © 2014 ISA. Published by Elsevier Ltd. All rights reserved.
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