The force relaxation in levitating high Tc superconductor

E. Ito, Y. Komano, K. Sawa, M. Murakami, N. Sakai, I. Hirabayashi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In development of a flywheel energy storage system, electric power loss reduction is expected by using superconducting bearings. However, for realization of superconducting bearing strong levitation force, rotation loss reduction and axial descent reduction are required. It is known with axial descent reduction technology that a preload method is effective, whereas by this method, the levitation force becomes quite small compared with the normal levitation. We confirmed the performance of the preload method by experiment using a YBCO superconducting electromagnet. The preload method is improved and a method, which does not change the rate of the force relaxation and makes the levitation force larger than the existing preload method is proposed.

Original languageEnglish
Title of host publicationADVANCES IN CRYOGENIC ENGINEERING
Subtitle of host publicationTransactions of the International Cryogenic Materials Conference, ICMC, Volume 52B
Pages820-827
Number of pages8
DOIs
Publication statusPublished - 2006 Mar 31
EventADVANCES IN CRYOGENIC ENGINEERING: Transactions of the International Cryogenic Materials Conference, ICMC - Keystone, CO, United States
Duration: 2005 Aug 292005 Sep 2

Publication series

NameAIP Conference Proceedings
Volume824 II
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceADVANCES IN CRYOGENIC ENGINEERING: Transactions of the International Cryogenic Materials Conference, ICMC
CountryUnited States
CityKeystone, CO
Period05/8/2905/9/2

Keywords

  • Bulk superconductor
  • Levitation
  • Shielding current distribution
  • Y-Ba-Cu-O

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Ito, E., Komano, Y., Sawa, K., Murakami, M., Sakai, N., & Hirabayashi, I. (2006). The force relaxation in levitating high Tc superconductor. In ADVANCES IN CRYOGENIC ENGINEERING: Transactions of the International Cryogenic Materials Conference, ICMC, Volume 52B (pp. 820-827). (AIP Conference Proceedings; Vol. 824 II). https://doi.org/10.1063/1.2192429