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Influence of temperature on AC loss in high T(c) superconducting cable conductors.

[In Japanese. / En japonais.]

Author(s) : TORII S., ICHINOSE A., SAKAKI H., et al.

Type of article: Article

Summary

The use of high T(c) superconducting (HTS) cable is expected to realize compact, highly efficient transmission lines. In order to achieve high efficiency, it is important to reduce AC loss. However, accurately estimating the AC loss of a real cable system is very difficult because the cable length is long and the operation temperature varies according to condition. The measurement of AC loss using a short sample is simple and possible using liquid nitrogen at the temperature of 77 K, but evaluating temperature dependence is very difficult because a refrigeration system is necessary. Moreover, a simple AC loss estimation method has been established for shield-less cable only, and is therefore not applicable to HTS cable with a shield layer. The authors have developed AC loss measurement equipment that uses calorimetrics and measured the temperature dependence for both critical current and AC loss of HTS cable with a shield layer. From the results, they propose a new simple estimation method for temperature dependence on AC loss by measuring the temperature dependence of critical current and AC loss at one point.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 2006-2786
  • Languages: Japanese
  • Source: Journal of the Cryogenic Society of Japan - vol. 41 - n. 1
  • Publication date: 2006

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