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Fault detection by means of Hilbert–Huang transform of the stator current in a PMSM with demagnetization / Espinosa, A.G. in IEEE transactions on energy conversion, Vol. 25 N° 2 (Juin 2010) 

Public ISBD [article]  in IEEE transactions on energy conversion > Vol. 25 N° 2 (Juin 2010) . - pp. 312 - 318 Titre : Fault detection by means of Hilbert–Huang transform of the stator current in a PMSM with demagnetization Type de document : texte imprimé Auteurs : Espinosa, A.G., Auteur ; Rosero, J.A., Auteur ; Cusido, J., Auteur Année de publication : 2010 Article en page(s) : pp. 312 - 318 Note générale : energy conversion Langues : Anglais (eng) Mots-clés : Hilbert  transforms;  demagnetisation;  fault  diagnosis;  finite  element  analysis;  permanent  magnet  motors;  stators;  synchronous  motors;  time-frequency  analysis Résumé : This paper presents a novel method to diagnose demagnetization in permanent-magnet synchronous motor (PMSM). Simulations have been performed by 2-D finite-element analysis in order to determine the current spectrum and the magnetic flux distribution due to this failure. The diagnostic just based on motor current signature analysis can be confused by eccentricity failure because the harmonic content is the same. Moreover, it can only be applied under stationary conditions. In order to overcome these drawbacks, a novel method is used based upon the Hilbert-Huang transform. It represents time-dependent series in a 2-D time-frequency domain by extracting instantaneous frequency components through an empirical-mode decomposition process. This tool is applied by running the motor under nonstationary conditions of velocity. The experimental results show the reliability and feasibility of the methodology in order to diagnose the demagnetization of a PMSM. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5404255&sortType%3Das [...] [article] Fault detection by means of Hilbert–Huang transform of the stator current in a PMSM with demagnetization [texte imprimé] / Espinosa, A.G., Auteur ; Rosero, J.A., Auteur ; Cusido, J., Auteur . - 2010 . - pp. 312 - 318. energy conversion Langues : Anglais (eng) in IEEE transactions on energy conversion > Vol. 25 N° 2 (Juin 2010) . - pp. 312 - 318 Mots-clés : Hilbert  transforms;  demagnetisation;  fault  diagnosis;  finite  element  analysis;  permanent  magnet  motors;  stators;  synchronous  motors;  time-frequency  analysis Résumé : This paper presents a novel method to diagnose demagnetization in permanent-magnet synchronous motor (PMSM). Simulations have been performed by 2-D finite-element analysis in order to determine the current spectrum and the magnetic flux distribution due to this failure. The diagnostic just based on motor current signature analysis can be confused by eccentricity failure because the harmonic content is the same. Moreover, it can only be applied under stationary conditions. In order to overcome these drawbacks, a novel method is used based upon the Hilbert-Huang transform. It represents time-dependent series in a 2-D time-frequency domain by extracting instantaneous frequency components through an empirical-mode decomposition process. This tool is applied by running the motor under nonstationary conditions of velocity. The experimental results show the reliability and feasibility of the methodology in order to diagnose the demagnetization of a PMSM. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5404255&sortType%3Das [...]