Parameter Determination of a Condition for Simultaneous Quench in Series-Connected YBCO Coated Conductors

Author

Lee, Eung Ro ; Park, Dong Keun ; Jang, Jae Young ; Chang, Ki Sung ; Chung, Yoon Do ; Bae, Duck Kwon ; Ahn, Min Cheol ; Yoon, Yong Soo ; Ko, Tae Kuk

Author_Institution

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

Volume

20

Issue

3

fYear

2010

fDate

6/1/2010 12:00:00 AM

Firstpage

1207

Lastpage

1210

Abstract

A simultaneous quench has been one of challenging issues in a development of a superconducting fault current limiter (SFCL) as long as series-connected superconducting materials are not identical each other. This paper deals with a parameter determination of a condition for simultaneous quench in series-connected YBCO coated conductors (CC), as a preliminary step to develop its faculties for high voltage CC applications. An electrical and thermal analysis based on the finite element method (FEM) showed that decisive parameters were critical current and n-value. For verifying the analysis, two sets of series-connected samples from a batch of AMSC 344S, which is clad on stainless steel, were short-circuit tested. One set has quite different critical current, whereas the other similar ones. The analysis estimated the quench initiation characteristics among the samples in both cases. After the verification, the condition for simultaneous quench, i.e. allowable deviation of critical current and n-value, has been obtained.

Keywords

barium compounds; coatings; conductors (electric); fault current limiters; high-temperature superconductors; yttrium compounds; AMSC 344S; YBCO; YBCO coated conductors; critical current; electrical analysis; finite element method; high voltage CC application; n-value; parameter determination; series-connected superconducting materials; short-circuit testing; simultaneous quench; stainless steel; superconducting fault current limiter; thermal analysis; Coated conductor; simultaneous quench; superconducting fault current limiter;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2010.2043087

Filename

5443662