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Evaluation of a bearingless PM motor with wide magnetic gaps / Asama, J. 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. 957 - 964 Titre : Evaluation of a bearingless PM motor with wide magnetic gaps Type de document : texte imprimé Auteurs : Asama, J., Auteur ; Amada, M., Auteur ; Tanabe, N., Auteur Année de publication : 2011 Article en page(s) : pp. 957 - 964 Note générale : energy conversion Langues : Anglais (eng) Mots-clés : Drives;  finite  element  analysis;  machine  bearings;  permanent  magnet  motors Résumé : A new noncontact drive system has been developed employing a consequent-pole-type bearingless permanent magnet (PM) motor and a thrust magnetic bearing. This bearingless motor has a wide magnetic gap. The wide magnetic gap may cause a decrease in radial magnetic suspension force because of an increase in magnetic reluctance. A thrust magnetic bearing is installed at the end of the shaft because strong thrust force exists in centrifugal pump applications. In this paper, the magnetic suspension forces and rotation characteristics of the experimental prototype are evaluated while the rotor is magnetically suspended. Experimental results are also compared to the calculated ones using the finite-element method. It is demonstrated that the developed consequent-pole-type bearingless PM motor possesses sufficient magnetic suspension force for noncontact operation. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5422659&sortType%3Das [...] [article] Evaluation of a bearingless PM motor with wide magnetic gaps [texte imprimé] / Asama, J., Auteur ; Amada, M., Auteur ; Tanabe, N., Auteur . - 2011 . - pp. 957 - 964. energy conversion Langues : Anglais (eng) in IEEE transactions on energy conversion > Vol. 25, N° 4 (Décembre 2010) . - pp. 957 - 964 Mots-clés : Drives;  finite  element  analysis;  machine  bearings;  permanent  magnet  motors Résumé : A new noncontact drive system has been developed employing a consequent-pole-type bearingless permanent magnet (PM) motor and a thrust magnetic bearing. This bearingless motor has a wide magnetic gap. The wide magnetic gap may cause a decrease in radial magnetic suspension force because of an increase in magnetic reluctance. A thrust magnetic bearing is installed at the end of the shaft because strong thrust force exists in centrifugal pump applications. In this paper, the magnetic suspension forces and rotation characteristics of the experimental prototype are evaluated while the rotor is magnetically suspended. Experimental results are also compared to the calculated ones using the finite-element method. It is demonstrated that the developed consequent-pole-type bearingless PM motor possesses sufficient magnetic suspension force for noncontact operation. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5422659&sortType%3Das [...]