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End effects in multiphase fractional slot concentrated-winding surface permanent magnet synchronous machines / Shah, M. R. in IEEE transactions on energy conversion, Vol. 25, N° 4 (Décembre 2010) 

Public ISBD [article]  in IEEE transactions on energy conversion > Vol. 25, N° 4 (Décembre 2010) . - pp. 1001 - 1009 Titre : End effects in multiphase fractional slot concentrated-winding surface permanent magnet synchronous machines Type de document : texte imprimé Auteurs : Shah, M. R., Auteur ; EL-Refaie, Ayman M., Auteur Année de publication : 2011 Article en page(s) : pp. 1001 - 1009 Note générale : energy conversion Langues : Anglais (eng) Mots-clés : Eddy  current  losses;  machine  windings;  permanent  magnet  machines;  synchronous  machines Résumé : Fractional-slot concentrated windings have been gaining a lot of interest in permanent magnet synchronous machines. This is due to the advantages they provide, including shorter nonoverlapping end turns, higher efficiency, higher power density, higher slot fill factor, lower manufacturing cost, better flux-weakening capability resulting in wider constant power versus speed range, and fault tolerance. This paper investigates the end effects in this type of machines. The study focuses on eddy-current losses in the frame, end shields, and clamping rings (magnetic/nonmagnetic). Desirable slot/pole combinations for different number of phases are investigated including both the single- and the double-layer windings. Suggestions for clearances between end windings and the support structure are given. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5555958&sortType%3Das [...] [article] End effects in multiphase fractional slot concentrated-winding surface permanent magnet synchronous machines [texte imprimé] / Shah, M. R., Auteur ; EL-Refaie, Ayman M., Auteur . - 2011 . - pp. 1001 - 1009. energy conversion Langues : Anglais (eng) in IEEE transactions on energy conversion > Vol. 25, N° 4 (Décembre 2010) . - pp. 1001 - 1009 Mots-clés : Eddy  current  losses;  machine  windings;  permanent  magnet  machines;  synchronous  machines Résumé : Fractional-slot concentrated windings have been gaining a lot of interest in permanent magnet synchronous machines. This is due to the advantages they provide, including shorter nonoverlapping end turns, higher efficiency, higher power density, higher slot fill factor, lower manufacturing cost, better flux-weakening capability resulting in wider constant power versus speed range, and fault tolerance. This paper investigates the end effects in this type of machines. The study focuses on eddy-current losses in the frame, end shields, and clamping rings (magnetic/nonmagnetic). Desirable slot/pole combinations for different number of phases are investigated including both the single- and the double-layer windings. Suggestions for clearances between end windings and the support structure are given. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5555958&sortType%3Das [...]

Fractional-slot concentrated-windings synchronous permanent magnet machines: opportunities and challenges / EL-Refaie, Ayman M. in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 107 - 121 Titre : Fractional-slot concentrated-windings synchronous permanent magnet machines: opportunities and challenges Type de document : texte imprimé Auteurs : EL-Refaie, Ayman M., Auteur Article en page(s) : pp. 107 - 121 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Concentrated  Distributed  Fractional  slot  Generators  Integral  slot  Machines  Motors  Permanent  magnet  (PM)  Synchronous  Windings Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Fractional-slot concentrated-winding (FSCW) synchronous permanent magnet (PM) machines have been gaining interest over the last few years. This is mainly due to the several advantages that this type of windings provides. These include high-power density, high efficiency, short end turns, high slot fill factor particularly when coupled with segmented stator structures, low cogging torque, flux-weakening capability, and fault tolerance. This paper is going to provide a thorough analysis of FSCW synchronous PM machines in terms of opportunities and challenges. This paper will cover the theory and design of FSCW synchronous PM machines, achieving high-power density, flux-weakening capability, comparison of single- versus double-layer windings, fault-tolerance rotor losses, parasitic effects, comparison of interior versus surface PM machines, and various types of machines. This paper will also provide a summary of the commercial applications that involve FSCW synchronous PM machines. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229186 [article] Fractional-slot concentrated-windings synchronous permanent magnet machines: opportunities and challenges [texte imprimé] / EL-Refaie, Ayman M., Auteur . - pp. 107 - 121. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 107 - 121 Mots-clés : Concentrated  Distributed  Fractional  slot  Generators  Integral  slot  Machines  Motors  Permanent  magnet  (PM)  Synchronous  Windings Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : Fractional-slot concentrated-winding (FSCW) synchronous permanent magnet (PM) machines have been gaining interest over the last few years. This is mainly due to the several advantages that this type of windings provides. These include high-power density, high efficiency, short end turns, high slot fill factor particularly when coupled with segmented stator structures, low cogging torque, flux-weakening capability, and fault tolerance. This paper is going to provide a thorough analysis of FSCW synchronous PM machines in terms of opportunities and challenges. This paper will cover the theory and design of FSCW synchronous PM machines, achieving high-power density, flux-weakening capability, comparison of single- versus double-layer windings, fault-tolerance rotor losses, parasitic effects, comparison of interior versus surface PM machines, and various types of machines. This paper will also provide a summary of the commercial applications that involve FSCW synchronous PM machines. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5229186