The experimental study of AC loss dependency on joint method in BSCCO-2223 tape

Author

Kang, Hyoungku ; Kim, Jung Ho ; Hwangbo, Hoon ; Joo, Jinho ; Nah, Wansoo ; Jang, Mihye ; Kim, Ho Min ; Yoon, Yong Soo ; Oh, Sang-Soo ; Ryu, Kang-Sik ; Ko, Tae Kuk

Author_Institution

Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea

Volume

11

Issue

1

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

2216

Lastpage

2219

Abstract

In case of manufacturing applied superconducting machines using high-Tc superconductors (HTS) such as SMES, MAGLEV and superconducting generators, superconducting joints are very important because they need very long tapes. For this reason, the investigation of AC loss of jointed tapes should be considered as well as that of the AC loss of jointless tapes, and so the authors investigated the tendency of AC loss with superconducting joint, and compared the AC loss of jointed tapes with that of jointless tapes. In this paper, the AC loss in BSCCO-2223 silver (Ag) sheathed tapes was measured by using the four-probe transport technique at 77 K. Firstly, it was shown that the experimental measurement of AC loss in the tapes agree well with the calculated values provided by the Norris equation. Moreover, it was shown that the AC loss depends on amplitude of transport current. Finally, it was shown that the AC loss depends on joint resistance and index n

Keywords

bismuth compounds; cable jointing; cable sheathing; calcium compounds; copper compounds; lead compounds; loss measurement; silver; strontium compounds; superconducting cables; superconducting machines; superconducting tapes; (BiPb)₂Sr₂Ca₂Cu₃O ₈-Ag HTSC tape; (PbBi)₂Sr₂Ca₂Cu₃O ₈-Ag; 77 K; AC loss dependency; BSCCO-2223 tape; MAGLEV; Norris equation; SMES; applied superconducting machines; four-probe transport technique; high-Tc superconductors; joint method; joint resistance; superconducting generators; superconducting joints; transport current amplitude; Electrical resistance measurement; Equations; High temperature superconductors; Loss measurement; Magnetic levitation; Manufacturing; Samarium; Silver; Superconducting films; Superconducting magnetic energy storage;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.920299

Filename

920299