Electrical power devices, e.g. motors, power transmission cables, transformers, etc. are the most promising, and nowadays the most technologically advanced, applications of high temperature superconductors (HTS). Multifilamentary HTS tapes (usually Bi-2223/Ag composites) are used in forms of various
AC loss characteristics of Bi-2223 HTS tapes under bending
β Scribed by Hae-Joon Kim; J.H. Kim; J.W. Cho; K.D. Sim; S. Kim; S.S. Oh; D.S. Kwag; H.J. Kim; J.H. Bae; K.C. Seong
- Publisher
- Elsevier Science
- Year
- 2006
- Tongue
- English
- Weight
- 649 KB
- Volume
- 445-448
- Category
- Article
- ISSN
- 0921-4534
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Bending strain dependence of critical current, I c , of Ag/Bi-2223 57 filament tapes was investigated at 77 K and room temperature, RT, using a device invented by Goldacker. The strain where I c start to degrade steeply at 77 K, 0.48%, was larger than that at RT, 0.36%. This is an indication of an a
Ac-loss and time constant measurements were performed with Bi-2223 tape conductors in Ag matrix at 4.2 K and at 77 K. The frequency dependence of the loss curve shows the expected maximum at xs ΒΌ 1. In some cases the loss curve goes through a minimum in the higher frequency range and then increases