Determination of stabilizer thickness for YBCO coated conductors based on coil protection

Y. Kawai, A. Ishiyama, H. Ueda, S. Nagaya, K. Shikimachi, N. Hirano

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The possibility of the occurrence of quench caused by mechanical disturbance in high-temperature superconductors (HTS's) is much lower than that in low-temperature superconductors. However, to enhance the reliability and safety of HTS coils, it is necessary to establish a stability criterion and a protection scheme on the basis of the assumption that the quench is caused by the failure in power supply, cooling systems, etc. In this study, we assume that the stored magnetic energy in the HTS coil is dissipated by an external resistance that acts as a quench protection. Under this assumption, we derive a function that examines the heat balance of quenching YBCO coil under an adiabatic condition and propose a criterion using the derived function to determine an appropriate stabilizer thickness of YBCO conductors.

Original languageEnglish
Pages (from-to)1865-1869
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume470
Issue number20
DOIs
Publication statusPublished - Nov 1 2010
Externally publishedYes

Keywords

  • Coil protection
  • Stabilizer thickness
  • YBCO coated conductor

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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