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Influence of nonconsecutive bar breakages in motor current signature analysis for the diagnosis of rotor faults in induction motors / Riera-Guasp, Martin in IEEE transactions on energy conversion, Vol. 25 N° 1 (Mars 2010) 

Public ISBD [article]  in IEEE transactions on energy conversion > Vol. 25 N° 1 (Mars 2010) . - pp. 80 - 89 Titre : Influence of nonconsecutive bar breakages in motor current signature analysis for the diagnosis of rotor faults in induction motors Type de document : texte imprimé Auteurs : Riera-Guasp, Martin, Auteur ; Cabanas, M. F., Auteur ; Antonino-Daviu, Jose Alfonso, Auteur Année de publication : 2010 Article en page(s) : pp. 80 - 89 Note générale : energy conversion Langues : Anglais (eng) Mots-clés : electric  machine  analysis  computing;  fault  diagnosis;  finite  element  analysis;  rotors;  squirrel  cage  motors Résumé : Studies of rotor asymmetries in squirrel-cage induction motors have traditionally focused on analyses of the effects of the breakage of adjacent bars on the magnetic field and current spectrum. However, major motor manufacturers have reported cases where damaged bars are randomly distributed around the rotor perimeter of large HV machines. In some of these cases, the motors were being monitored under maintenance programs based on motor current signature analysis (MCSA), and the degree of degradation found in the rotor was much greater than that predicted by analysis of their current spectra. For this reason, a complete study was carried out, comprising a theoretical analysis, as well as simulation and tests, to investigate the influence that the number and location of faulty bars has on the traditional MCSA diagnosis procedure. From the theoretical analysis, based on the application of the fault-current approach and space-vector theory, a very simple method is deduced, which enables the left sideband amplitude to be calculated for any double bar breakage, per unit of the sideband amplitude corresponding to a single breakage. The proposed methodology is generalized for the estimation of the sideband amplitude in the case of multiple bar breakages and validated by simulation using a finite-element-based model, as well as by laboratory tests. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5350691&sortType%3Das [...] [article] Influence of nonconsecutive bar breakages in motor current signature analysis for the diagnosis of rotor faults in induction motors [texte imprimé] / Riera-Guasp, Martin, Auteur ; Cabanas, M. F., Auteur ; Antonino-Daviu, Jose Alfonso, Auteur . - 2010 . - pp. 80 - 89. energy conversion Langues : Anglais (eng) in IEEE transactions on energy conversion > Vol. 25 N° 1 (Mars 2010) . - pp. 80 - 89 Mots-clés : electric  machine  analysis  computing;  fault  diagnosis;  finite  element  analysis;  rotors;  squirrel  cage  motors Résumé : Studies of rotor asymmetries in squirrel-cage induction motors have traditionally focused on analyses of the effects of the breakage of adjacent bars on the magnetic field and current spectrum. However, major motor manufacturers have reported cases where damaged bars are randomly distributed around the rotor perimeter of large HV machines. In some of these cases, the motors were being monitored under maintenance programs based on motor current signature analysis (MCSA), and the degree of degradation found in the rotor was much greater than that predicted by analysis of their current spectra. For this reason, a complete study was carried out, comprising a theoretical analysis, as well as simulation and tests, to investigate the influence that the number and location of faulty bars has on the traditional MCSA diagnosis procedure. From the theoretical analysis, based on the application of the fault-current approach and space-vector theory, a very simple method is deduced, which enables the left sideband amplitude to be calculated for any double bar breakage, per unit of the sideband amplitude corresponding to a single breakage. The proposed methodology is generalized for the estimation of the sideband amplitude in the case of multiple bar breakages and validated by simulation using a finite-element-based model, as well as by laboratory tests. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5350691&sortType%3Das [...]