Documents disponibles écrits par cet auteur

Global loss evaluation methods for nonsinusoidally fed medium-frequency power transformers / Villar, Irma in IEEE transactions on industrial electronics, Vol. 56 N° 10 (Octobre 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N° 10 (Octobre 2009) . - pp. 4132 - 4140 Titre : Global loss evaluation methods for nonsinusoidally fed medium-frequency power transformers Type de document : texte imprimé Auteurs : Villar, Irma, Auteur ; Viscarret, Unai, Auteur ; Etxeberria-Otadui, Ion, Auteur Article en page(s) : pp. 4132 - 4140 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Copper  losses  Core  losses  Medium-frequency  transformer  Medium-voltage  applications Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Medium-voltage conversion systems, such as traction and grid-connected converters, are continuously evolving toward higher power densities. Consequently, volume, weight, and material reductions are becoming major design issues, which lead the research focus toward high-/medium-frequency isolated power conversion systems. An optimized design of these conversion systems requires a detailed transformer-loss evaluation considering both copper and core losses. This paper presents a simple and flexible methodology to analyze global medium-frequency transformer losses in an isolated DC-DC converter fed by general nonsinusoidal waveforms. Various loss evaluation approaches are considered, pointing out their validity and limitations by means of finite-element simulations and experimental tests. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=4909005 [article] Global loss evaluation methods for nonsinusoidally fed medium-frequency power transformers [texte imprimé] / Villar, Irma, Auteur ; Viscarret, Unai, Auteur ; Etxeberria-Otadui, Ion, Auteur . - pp. 4132 - 4140. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N° 10 (Octobre 2009) . - pp. 4132 - 4140 Mots-clés : Copper  losses  Core  losses  Medium-frequency  transformer  Medium-voltage  applications Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Medium-voltage conversion systems, such as traction and grid-connected converters, are continuously evolving toward higher power densities. Consequently, volume, weight, and material reductions are becoming major design issues, which lead the research focus toward high-/medium-frequency isolated power conversion systems. An optimized design of these conversion systems requires a detailed transformer-loss evaluation considering both copper and core losses. This paper presents a simple and flexible methodology to analyze global medium-frequency transformer losses in an isolated DC-DC converter fed by general nonsinusoidal waveforms. Various loss evaluation approaches are considered, pointing out their validity and limitations by means of finite-element simulations and experimental tests. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=4909005