Quench characteristics of HTS tapes with alternating currents above their critical currents

In this study, the dependence of quench characteristics of HTS tapes on the amplitude of current and duration time was investigated by applying alternating current (AC) that is several times over the critical currents of HTS tapes. When the applied AC/sub peak/ was up to three times of critical curr...

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Published in:IEEE transactions on applied superconductivity 2003-06, Vol.13 (2), p.2968-2971
Main Authors: YIM, Seong-Woo, CHOI, Hyo-Sang, HYUN, Ok-Bae, HWANG, Si-Dole, HAN, Byoung-Sung
Format: Article
Language:English
Subjects:
Applied sciences
Connection and protection apparatus
Critical current
Degradation
Electrical engineering. Electrical power engineering
Exact sciences and technology
High temperature superconductors
Materials
Protection
Superconducting cables
Superconducting films
Testing
Thermal quenching
Transformers
Voltage
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cited_by cdi_FETCH-LOGICAL-c349t-d958178ee3710d750c70809d2390485864a5fb8f0fa50b8c192bbd0ffbbaec1e3
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container_end_page 2971
container_issue 2
container_start_page 2968
container_title IEEE transactions on applied superconductivity
container_volume 13
creator YIM, Seong-Woo
CHOI, Hyo-Sang
HYUN, Ok-Bae
HWANG, Si-Dole
HAN, Byoung-Sung
description In this study, the dependence of quench characteristics of HTS tapes on the amplitude of current and duration time was investigated by applying alternating current (AC) that is several times over the critical currents of HTS tapes. When the applied AC/sub peak/ was up to three times of critical current, the joule heat was not cooled down by LN/sub 2/ completely. However, when the over-current reached four times of critical current, the superconducting region began to decrease gradually and the total resistance of HTS tapes increased rapidly. Finally, we analyzed the quench development using voltage-current characteristics and examined the influence of pitch angles on resistance increase.
doi_str_mv 10.1109/TASC.2003.812077
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source IEEE Electronic Library (IEL) Journals
subjects Applied sciences
Connection and protection apparatus
Critical current
Degradation
Electrical engineering. Electrical power engineering
Exact sciences and technology
High temperature superconductors
Materials
Protection
Superconducting cables
Superconducting films
Testing
Thermal quenching
Transformers
Voltage
title Quench characteristics of HTS tapes with alternating currents above their critical currents
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