Title :
Influence of Non-Uniform Current Distribution on AC Transport Current Loss in Bi-2223/Ag Tapes
Author :
Choi, Seyong ; Suh, Su-Jeong ; Nah, Wansoo ; Ma, Yong Ho ; Ryu, Kyung-Woo ; Kim, Jung Ho ; Joo, Jinho ; Sohn, Myung-Hwan ; Kwon, Young-Kil
Author_Institution :
Sungkyunkwan Univ., Gyeonggi
fDate :
6/1/2006 12:00:00 AM
Abstract :
This paper presents the influence of current distribution on AC transport current loss in multi-strand high-temperature superconductor (HTS) tapes. The current-distribution-dependent-AC loss is analyzed by introducing a current distribution parameter. We calculated AC loss of multi-strand HTS tapes numerically and performed AC loss measurements as well. Though the effect of current distribution on AC transport current loss is relatively insignificant for a low applied transport current, the effect of nonuniform current distribution seriously increases AC loss for a high applied transport current. The AC loss measurement method used in this paper is also confirmed by comparison with numerical results: the experimental and computational results showed good agreement for various current distribution parameters
Keywords :
bismuth compounds; current distribution; high-temperature superconductors; loss measurement; numerical analysis; superconducting tapes; AC transport current loss measurement; Bi-2223-Ag tapes; multistrand high-temperature superconductor tape; nonuniform current distribution; numerical analysis; Conductors; Critical current; Current distribution; Current measurement; High temperature superconductors; Loss measurement; Materials science and technology; Performance evaluation; Superconducting materials; Superconductivity; AC transport current loss; Bi-2223/Ag tape; nonuniform current distribution;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2006.870821
