DocumentCode :
1430220
Title :
The AC Loss Estimation of Bi-2223/Ag Superconductor Tapes in Polygonal Configuration
Author :
Choi, Seyong ; Nah, Wansoo
Author_Institution :
Sungkyunkwan Univ., Suwon, South Korea
Volume :
20
Issue :
3
fYear :
2010
fDate :
6/1/2010 12:00:00 AM
Firstpage :
2107
Lastpage :
2110
Abstract :
In this paper, we have studied the electromagnetic phenomenon and AC losses of assembled high-Tc superconductor (HTS) tapes using the finite element method (FEM) approach. The model cable is composed of several Bi-2223/Ag tapes with polygonal shape on the cylindrical former that was arranged in parallel along the conductor axis. The HTS tape usually shows complex material properties, which are described by the nonlinear resistivity and the anisotropy against the external magnetic flux density as well as its angle. The numerical calculation was carried out considering the field dependence of critical current density and index value, which accounts for the anisotropy of the Bi-2223/Ag tape. The calculated AC losses were compared with the experimental results and with the theoretical values. It was observed that the analytic formulae are not proper to predict the AC loss of the multi-stranded conductor that is presented here. The adjacent tape´s effect of the conductor on the AC loss was also investigated and discussed.
Keywords :
bismuth; critical current density (superconductivity); electrical resistivity; finite element analysis; high-temperature superconductors; silver; superconducting tapes; Bi2223-Ag; FEM approach; ac loss estimation; adjacent tape effect; anisotropy; assembled high-Tc superconductor tapes; complex material properties; critical current density; electromagnetic phenomenon; external magnetic flux density; field dependence; finite element method; index value; model cable; multistranded conductor; nonlinear resistivity; polygonal configuration; AC transport current loss; Bi-2223/Ag tape; FEM; cylindrically assembled conductor; mono-block model;
fLanguage :
English
Journal_Title :
Applied Superconductivity, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8223
Type :
jour
DOI :
10.1109/TASC.2010.2040953
Filename :
5422892
Link To Document :
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