Influences of separate position to radial direction between bulk superconductor and permanent magnetic ring about magnetic levitation and rotating characteristics

  • Nagaya S
  • Komura K
  • Kashima N
 et al. 
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Abstract

The segmental structure of bulk superconductor will be needed designing ultra-large scale high temperature superconducting magnetic bearing for MWh class superconducting flywheel. The N-S poles of permanent magnetic ring assembly were arranged alternately to radial direction and the influences to magnetic levitation and rotating characteristics of the separate position of bulk superconductor to radial direction were tested. It was found when the separate position of bulk superconductor was coincided with the joint of the N-S poles of permanent magnets, both the magnetic levitation and the rotating characteristics were the same as the case of non-separate superconductor. When its position was the center of one side pole of permanent magnets, the levitation was the same as the case of non-separate superconductor, but the behavior of rotating characteristics changed and the loss increased as compared with the case of non-separate type. © 2003 Elsevier B.V. All rights reserved.

Author-supplied keywords

  • Permanent magnet
  • Separate position to radial direction
  • Superconducting magnetic bearing
  • Superconductor

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Authors

  • S. Nagaya

  • K. Komura

  • N. Kashima

  • M. Minami

  • H. Kawashima

  • Y. Nara

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