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

• Published in: IEEE transactions on applied superconductivity Vol. 11; no. 1; pp. 2216 - 2219
• Main Authors: KANG, Hyoungku, JUNG HO KIM, TAE KUK KO, HWANGBO, Hoon, JOO, Jinho, NAH, Wansoo, JANG, Mihye, HO MIN KIM, YONG SOO YOON, OH, Sang-Soo, RYU, Kang-Sik
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01-03-2001; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Alternating current; Amplitudes; Applied sciences; Electric connection. Cables. Wiring; Electrical engineering. Electrical power engineering; Electrical resistance measurement; Equations; Exact sciences and technology; High temperature superconductors; Loss measurement; Magnetic levitation; Magnetic levitation vehicles; Manufacturing; Mathematical analysis; Samarium; Silver; Superconducting films; Superconducting magnetic energy storage; Superconducting tapes; Superconductivity; Transport; Various equipment and components
• ISSN: 1051-8223; 1558-2515
• DOI: 10.1109/77.920299

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.