Experimental diagnosis of broken rotor bars fault in induction machine based on Hilbert and discrete wavelet transforms
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Date
2017-11-10
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Université de M'sila
Abstract
In this paper, a diagnosis method based on
Hilbert and discrete wavelet transform (DWT) for broken
rotor bars in induction machine has been proposed. The
method is based from using Hilbert transform (HT) to
obtain the envelope for the stator current and processed
via DWT. The main advantage of HT is the removal of the
fundamental component to allow a clearer vision of the
fault frequencies. The result by HDWT (HT and DWT) is
more suitable for emergency signal analysis. This technique
is effective for the stationary signal as well as
non-stationary signal processing. The HDWT analysis
was introduced to overcome the shortcomings of Fourier
analysis. The performance of this approach is evaluated in
simulation and experimental results.
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Keywords
Induction machine . Broken rotor bars fault . Hilbert . Discrete wavelet