Design and test of a thermal triggered persistent current system using high temperature superconducting tapes

Dong Keun Park, Hyoungku Kang, Min Cheol Ahn, Seong Eun Yang, Yong Soo Yoon, Sang Jin Lee, Tae Kuk Ko

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A superconducting magnet which is operated in persistent current mode in SMES, NMR, MRI and MAGLEV has many advantages such as high uniformity of magnetic field and reduced thermal loss. A high temperature superconducting (HTS) persistent current switch (PCS) system was designed and tested in this research. The HTS PCS was optimally designed using two different HTS tapes, second generation coated conductor (CC) HTS tape and Bi-2223 HTS tape by the finite element method (FEM) in thermal quench characteristic view. The CC tape is more prospective applicable wire in these days for its high n value and critical current independency from external magnetic field than Bi-2223 tape. Also a prototype PCS system using Bi-2223 tape was manufactured and tested. The PCS system consists of a PCS part, a heater which induces the PCS to quench, and a superconducting magnet. The test was performed in various conditions of transport current. An initial current decay appeared when the superconducting magnet was energized in a PCS system was analyzed. This paper would be foundation of HTS PCS researches.

Original languageEnglish
Article number002
Pages (from-to)5-8
Number of pages4
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 2006 Jun 1


All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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