Browsing by Author "Fukao, Tadashi"

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Browsing by Author "Fukao, Tadashi"

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  • Amemiya, Jun; Chiba, Akira; Dorrell, David; Fukao, Tadashi (IEEE, 2005)
    We describe the basic characteristics of a consequent-pole bearingless motor. The consequent-pole-type rotor has buried permanent magnets (PMs) polarized in the same radial direction. We carried out an analysis to find the ...
  • Asano, Yoshihiro; Mizuguchi, Akira; Asama, Junichi; Chiba, Akira; Ooshima, Masahide; Takemoto, Masatsugu; Amada, Miya; Fukao, Tadashi; Ichikawa, Osamu; Dorrell, David (IEEE, 2009)
    In this paper, a design-optimization method for a consequent-pole bearingless motor with a rather large air-gap length is presented. A rotor iron and permanent-magnet structure is proposed which enhances the suspension-force ...
  • Hayashi, Hiroaki; Nakamura, Kensaku; Chiba, Akira; Fukao, Tadashi; Tungpimolrut, Kanokvate; Dorrell, David (IEEE, 2009)
    In this paper, a comparison of efficiencies is put forward for a set of test machines constructed from several different types of low-loss magnetic steels. These are laminated amorphous alloys, 6.5% high silicon steel, and ...
  • Chiba, Akira; Fukao, Tadashi; Ichikawa, Osamu; Oshima, Masahide; Takemoto, Masatugu; Dorrell, David (Newnes (Elsevier Inc), 2005)
    TIlls book is primarily about bearingless machines, where the magnetic levitation of the rotor is provided from within the main stator bore (in addition to torque production if motoring, or electrical power production ...
  • Nakagawa, Masakazu; Asano, Yoshikazu; Mizuguchi, Akira; Chiba, Akira; Xuan, Che Xiao; Ooshima, Masahide; Takemoto, Masatsugu; Fukao, Tadashi; Ichikawa, Osamu; Dorrell, David (IEEE, 2006)
    In this paper, a design optimization method for a consequent-pole bearingless motor is presented. This produces stable magnetic suspension under motor torque generation. The suspension force reduction and direction error, ...
  • Sugimoto, Hiroya; Kamiya, Kosuke; Nakamura, Ryo; Asama, Junichi; Chiba, Akira; Fukao, Tadashi; Dorrell, David (IEEE, 2008)
    Multi-consequent-pole bearingless motors can be used in low speed rotating and swinging stages (or platforms) under specific conditions. A test machine has been designed and built and in this machine two axes of freedom ...