NDLI: Quench Characteristics of HTS Conductors at Low Temperatures

Content Provider	IEEE Xplore Digital Library
Author	Taotao Huang Martinez, E. Friend, C. Yifeng Yang
Copyright Year	2002
Abstract	Not withstanding their high stability at liquid nitrogen temperatures, quench propagation due local disturbances remains a crucial issue for high temperature superconductors (HTS) operating at low temperatures as high field insert coils and cryogen-free magnets. In contrast to low temperature superconductors (LTS), normal zone in HTS at low temperatures must develop over a much extended temperature range for current sharing with a highly non-linear dependence on temperature. The present work addresses this issue directly using both computer simulation and experimental studies. Several quench characteristics unique to HTS have identified using a comparative study of the underlying quasilinear parabolic equation represented in an appropriate dimensionless form for proper isolation of the known effects of temperature dependence of thermal properties. Most notable and counter-intuitive finding is that the minimum propagation zone (MPZ) was found to increase with transport current. The correlations of minimum quench energy (MQE) and the quench temperature of MPZ with operating temperature and current have been obtained for comparison with experimental results.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	1317
Ending Page	1320
Page Count	4
File Size	419558
File Format	PDF
ISSN	10518223
Volume Number	18
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	High temperature superconductors Conductors Temperature dependence Temperature distribution Stability Nitrogen Superconducting coils Magnets Computer simulation Nonlinear equations superconducting magnets quench protection
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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