Quench evolution of YBCO ring based on weak link model

Minseok Joo, Chan Joo Lee, Tae Kuk Ko

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


The quench process of a YBCO high temperature superconducting ring was studied in relation with the electromagnetic and thermal effect. The characteristics of the resistance in the high-Tc superconducting ring after it quenches to resistive state was numerically evaluated with the heat conduction equation. An experimental model consists of a primary coil and a secondary high-Tc superconducting ring, which are magnetically coupled through the magnetic core. The quench process is initiated by a fast increase of an induced ac current exceeding a critical value in the weak link. The characteristics of the quench process in a bulk ring are well explained by numerical analysis. This analysis could be used for designing real devices such as a high temperature superconducting switch and a current limiter.

Original languageEnglish
Pages (from-to)195-198
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2 PART 1
Publication statusPublished - 1997

Bibliographical note

Funding Information:
Manuscript received August 26, 1996. This work was supported by the Ministry of Science and Technology (MOST), Republic of Korea.

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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