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Iron loss model for rotating machines using direct eddy current analysis in electrical steel sheets / Yamazaki, K. in IEEE transactions on energy conversion, Vol. 25, N° 3 (Septembre 2010) 

Public ISBD [article]  in IEEE transactions on energy conversion > Vol. 25, N° 3 (Septembre 2010) . - pp. 633 - 641 Titre : Iron loss model for rotating machines using direct eddy current analysis in electrical steel sheets Type de document : texte imprimé Auteurs : Yamazaki, K., Auteur ; Fukushima, N., Auteur Année de publication : 2011 Article en page(s) : pp. 633 - 641 Note générale : energy conversion Langues : Anglais (eng) Mots-clés : approximation  theory;  eddy  current  losses;  electromagnetic  fields;  finite  element  analysis;  magnetic  flux;  permanent  magnet  machines;  steel Résumé : In this paper, we propose and validate a method for the accurate estimation of iron loss in rotating machines. In this method, the eddy current loss in electrical steel sheets is directly calculated by nonlinear time-domain electromagnetic field analysis with a simple approximation of the excess loss. The hysteresis loss is also estimated by considering the flux distribution along the thickness of the steel sheet. The advantage of the method is that the high-frequency harmonic losses can be calculated accurately using only few material constants. The validity of this method is confirmed by experiments performed on a ring specimen and several types of motors. The experimental and calculated iron losses in each experiment are found to be in good agreement. It is clarified that the proposed method is useful for the accurate estimation of higher order harmonic losses, particularly, carrier losses caused by inverters. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5422658&sortType%3Das [...] [article] Iron loss model for rotating machines using direct eddy current analysis in electrical steel sheets [texte imprimé] / Yamazaki, K., Auteur ; Fukushima, N., Auteur . - 2011 . - pp. 633 - 641. energy conversion Langues : Anglais (eng) in IEEE transactions on energy conversion > Vol. 25, N° 3 (Septembre 2010) . - pp. 633 - 641 Mots-clés : approximation  theory;  eddy  current  losses;  electromagnetic  fields;  finite  element  analysis;  magnetic  flux;  permanent  magnet  machines;  steel Résumé : In this paper, we propose and validate a method for the accurate estimation of iron loss in rotating machines. In this method, the eddy current loss in electrical steel sheets is directly calculated by nonlinear time-domain electromagnetic field analysis with a simple approximation of the excess loss. The hysteresis loss is also estimated by considering the flux distribution along the thickness of the steel sheet. The advantage of the method is that the high-frequency harmonic losses can be calculated accurately using only few material constants. The validity of this method is confirmed by experiments performed on a ring specimen and several types of motors. The experimental and calculated iron losses in each experiment are found to be in good agreement. It is clarified that the proposed method is useful for the accurate estimation of higher order harmonic losses, particularly, carrier losses caused by inverters. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5422658&sortType%3Das [...]