Title :
Fault detection of eccentricity and bearing damage in a PMSM by means of wavelet transforms decomposition of the stator current
Author :
Rosero, J. ; Romeral, J.L. ; Cusido, J. ; Ortega, J.A. ; Garcia, A.
Author_Institution :
Motion Control & Ind. Applic. Group, Tech. Univ. of Catalonia., Terrassa
Abstract :
This paper presents the study of permanent magnet synchronous machines (PMSM) running with eccentricity and bearings damage. The objective is to detect and identify the fault through the current signature analysis. The stator current has been analyzed by means of both Fourier (FFT) and Discrete Wavelet (DWT) transforms. Simulations have been carried out with a two-dimensional (2-D) finite element analysis (FEA), and they have been also compared with experiments. The results prove that the method proposed can be used to identify mechanical faults in a PMSM.
Keywords :
discrete wavelet transforms; fast Fourier transforms; fault diagnosis; finite element analysis; machine bearings; permanent magnet machines; stators; synchronous machines; DWT; FFT; Fourier transforms; PMSM; bearing damage; current signature analysis; discrete Wavelet transforms; eccentricity; fault detection; mechanical faults; permanent magnet synchronous machines; stator current decomposition; two-dimensional finite element analysis; Discrete Fourier transforms; Discrete wavelet transforms; Fault detection; Fault diagnosis; Fourier transforms; Magnetic analysis; Permanent magnet machines; Stators; Wavelet analysis; Wavelet transforms; Drive; Fourier; PMSM; Wavelet; bearing; damage; eccentricity; fault;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2008. APEC 2008. Twenty-Third Annual IEEE
Conference_Location :
Austin, TX
Print_ISBN :
978-1-4244-1873-2
Electronic_ISBN :
1048-2334
DOI :
10.1109/APEC.2008.4522708
