caa a22 4500 46320655X CHVBK 20180405153128.0 cr unu---uuuuu 170326e20070101xx s 000 0 eng 10.1007/s00202-005-0339-6 doi (NATIONALLICENCE)springer-10.1007/s00202-005-0339-6 Fault detection in induction motors using Hilbert and Wavelet transforms [Elektronische Daten] [Guillermo A. Jiménez, Alfredo O. Muñoz, Manuel A. Duarte-Mermoud] In this work, a new on-line method for detecting incipient failures in electrical motors is proposed. The method is based on monitoring certain statistical parameters estimated from the analysis of the steady state stator current (for broken bars, saturation, eccentricities, and bearing failures) or the axial flux signal (for coil short-circuits in the stator windings). The approach is based on the extraction of the envelop of the signal by Hilbert transformation, pre-multiplied by a Tukey window to avoid transient distortion. Then a wavelet analysis (multi-resolution analysis) is performed, which makes the fault diagnosis easier. Finally, based on a statistical analysis, the failure thresholds are determined. Thus, by monitoring the mean value estimate it is possible to detect an incipient failure condition on the machine. Springer-Verlag Berlin Heidelberg, 2006 Hilbert transform nationallicence Wavelet transform nationallicence Fault detection nationallicence Broken bar detection nationallicence Motor fault detection nationallicence Motor failure diagnosis nationallicence Statistical analysis nationallicence Jiménez Guillermo A. Electrical Engineering Department, University of Chile, Av Tupper 2007, 412-3, Casilla Santiago, Chile aut Muñoz Alfredo O. Electrical Engineering Department, University of Chile, Av Tupper 2007, 412-3, Casilla Santiago, Chile aut Duarte-Mermoud Manuel A. Electrical Engineering Department, University of Chile, Av Tupper 2007, 412-3, Casilla Santiago, Chile aut Electrical Engineering Springer-Verlag 89/3(2007-01-01), 205-220 0948-7921 89:3<205 2007 89 202 https://doi.org/10.1007/s00202-005-0339-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00202-005-0339-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Jiménez Guillermo A. Electrical Engineering Department, University of Chile, Av Tupper 2007, 412-3, Casilla Santiago, Chile aut NATIONALLICENCE 700 1- Muñoz Alfredo O. Electrical Engineering Department, University of Chile, Av Tupper 2007, 412-3, Casilla Santiago, Chile aut NATIONALLICENCE 700 1- Duarte-Mermoud Manuel A. Electrical Engineering Department, University of Chile, Av Tupper 2007, 412-3, Casilla Santiago, Chile aut NATIONALLICENCE 773 0- Electrical Engineering Springer-Verlag 89/3(2007-01-01), 205-220 0948-7921 89:3<205 2007 89 202 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer