Induction motors airgap-eccentricity detection through the discrete wavelet transform of the apparent power signal under non-stationary operating conditions

Fast Fourier transform (FFT) analysis has been successfully used for fault diagnosis in induction machines. However, this method does not always provide good results for the cases of load torque, speed and voltages variation, leading to a variation of the motor-slip and the consequent FFT problems t...

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Veröffentlicht in:	ISA transactions 2014-03, Vol.53 (2), p.603-611
Hauptverfasser:	Yahia, K., Cardoso, A.J.M., Ghoggal, A., Zouzou, S.E.
Format:	Artikel
Sprache:	eng
Schlagworte:	Airgap-eccentricity fault detection Apparent-power Approximation Discrete Wavelet Transform Discrete wavelet transform (DWT) Electric potential Fourier transforms Induction motors Induction motors (IMs) Load torque variation Mathematical analysis Torque Voltage
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