Bar breakage detection on Squirrel Cage Induction Motors via Transient Motor Current Signal Analysis based on the Wavelet Transform. A Review
نویسندگان
چکیده
The use of the Wavelet Transform for the diagnosis of electrical machines has been widely studied. The present paper explains the main four general approaches in which the Startup Current (SC) of an Squirrel Cage Induction Motor is analyzed using the Wavelet Transform, in order to detect bar breakages: to generate the scalogram of the SC, to calculate the wavelet ridges, to calculate the DWT coefficients or to decompose the SC on a sum of an approximation and detail signals. Examples of those four main approaches are given and the specific solutions proposed by their authors are explained. Through the revision, the Wavelet Transform has proved to be an excellent mathematical tool for the detection of broken bars. Kew words: TMCSA, startup current, fault diagnosis, induction machines, wavelet transform, broken bars.
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