Investigation of the key factors affecting the permanent damage of the REBCO coated conductor in overcurrent condition

Ju Hui Choi; Yoon Hyuck Choi; Dong Hyung Kang; Yeonjoo Park; Jung Bin Song; Sun Kyoung Ha; Minwon Park; Haigun Lee

doi:10.1109/TASC.2014.2365110

Investigation of the key factors affecting the permanent damage of the REBCO coated conductor in overcurrent condition

Ju Hui Choi, Yoon Hyuck Choi, Dong Hyung Kang, Yeonjoo Park, Jung Bin Song, Sun Kyoung Ha, Minwon Park, Haigun Lee

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

The effects of inhomogeneous critical current I_c and n-value on the degradation or permanent damage of REBCO coated conductors (CCs) were investigated through repetitive quench tests and overcurrent tests. In the repetitive quench tests, the I_c values of the REBCO CC samples at the sections with the high n-values were degraded easily due to the existence of thermal stress. Furthermore, the overcurrent test results showed that the REBCO CC samples burned out only at the section with the highest n-value, regardless of their I_c values and the manufacturing process. Therefore, this study confirmed that the n-value of an REBCO CC is one of the essential factors affecting the degradation or permanent damage of CCs in the overcurrent condition.

Original language	English
Article number	6936875
Journal	IEEE Transactions on Applied Superconductivity
Volume	25
Issue number	3
DOIs	https://doi.org/10.1109/TASC.2014.2365110
Publication status	Published - 2015 Jun 1

Keywords

Critical current
REBCO CC
damage
degradation
inhomogeneity
n-value

ASJC Scopus subject areas

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

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10.1109/TASC.2014.2365110

Cite this

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abstract = "The effects of inhomogeneous critical current Ic and n-value on the degradation or permanent damage of REBCO coated conductors (CCs) were investigated through repetitive quench tests and overcurrent tests. In the repetitive quench tests, the Ic values of the REBCO CC samples at the sections with the high n-values were degraded easily due to the existence of thermal stress. Furthermore, the overcurrent test results showed that the REBCO CC samples burned out only at the section with the highest n-value, regardless of their Ic values and the manufacturing process. Therefore, this study confirmed that the n-value of an REBCO CC is one of the essential factors affecting the degradation or permanent damage of CCs in the overcurrent condition.",

keywords = "Critical current, REBCO CC, damage, degradation, inhomogeneity, n-value",

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AU - Kang, Dong Hyung

AU - Park, Yeonjoo

AU - Song, Jung Bin

AU - Ha, Sun Kyoung

AU - Park, Minwon

AU - Lee, Haigun

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AB - The effects of inhomogeneous critical current Ic and n-value on the degradation or permanent damage of REBCO coated conductors (CCs) were investigated through repetitive quench tests and overcurrent tests. In the repetitive quench tests, the Ic values of the REBCO CC samples at the sections with the high n-values were degraded easily due to the existence of thermal stress. Furthermore, the overcurrent test results showed that the REBCO CC samples burned out only at the section with the highest n-value, regardless of their Ic values and the manufacturing process. Therefore, this study confirmed that the n-value of an REBCO CC is one of the essential factors affecting the degradation or permanent damage of CCs in the overcurrent condition.

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Investigation of the key factors affecting the permanent damage of the REBCO coated conductor in overcurrent condition

Abstract

Keywords

ASJC Scopus subject areas

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