Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Analysis on Current Distribution in Bi-2223/Ag Tapes with Applied Alternating Over-critical Current

  • Yim, Seong-Woo (Korea Electric Power Search Institute, Advanced Technology Center) ;
  • Kim, Hye-Rim (Korea Electric Power Search Institute, Advanced Technology Cente) ;
  • Hwang, Si-Dole (Korea Electric Power Search Institute, Advanced Technology Center)
  • Published : 2004.06.01

Abstract

Generally Bi-2223/Ag tapes have a broad S/N transition region and their sheath is a good electric conductor. In this study, the current distribution between superconductor and metal sheath in HTS tapes were investigated. AC with its peak value above 10 times $I_{c}$ was applied to HTS tapes for around 6 cycles and V-I characteristics were measured. Using the resistance of the sheath and V-I curves, the current distribution between superconductor and metal sheath was calculated. When 150 $A_{p}$ was applied, more than 2/3 of the current flows through superconductor. However, in the case of 304 $A_{p}$, most of the applied current came to flow through the metal sheath at the 6th cycle.e.e.e.

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References

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