Repetitive over-current characteristics of the joints between the YBCO coated conductor

Ki Sung Chang, Dong Keun Park, Seong Eun Yang, Young Jae Kim, Jin Bae Na, Na Young Kwon, Haigun Lee, Ho Min Kim, Tae Kuk Ko

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


In recent years, the YBCO coated conductor (CC) has been developed as a suitable material for power apparatuses. To fabricate a superconducting apparatus of a large capacity, the joint between the superconducting tapes are inevitable because of the need to have a long length conductor. Consequently, the joint characteristic is very important for the efficiency of the superconducting part in the apparatuses. Besides, maintaining the characteristic of the joint between the superconducting tapes even after repetitive over-current is also important for stability of power apparatuses. Therefore the joints between CC tapes were developed in differing joint length and the characteristics of the joints were compared. In this paper, we present the experimental results of several over-current experiments with the jointed CC tapes. The results of the over-current experiments and the trend of the joint characteristics are compared in point of stability of the joints. Resistance and critical current of the joints were measured from the V - I curve before and after several over-current experiments for observation of the trend of the joint characteristics. This study of repetitive over-current characteristics of the joints may be useful to the development of superconducting apparatuses in forms of magnets.

Original languageEnglish
Article number5109574
Pages (from-to)2419-2422
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number3
Publication statusPublished - 2009 Jun

Bibliographical note

Funding Information:
Manuscript received August 26, 2008. First published June 23, 2009; current version published July 15, 2009. This work was supported by the Korea Science and Engineering Foundation (KOSEF) through the National Research Lab. Program funded by the Ministry of Science and Technology R0A-2007-000-20063-0.


  • Joint
  • Over-current
  • YBCO coated conductor

ASJC Scopus subject areas

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


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