On the current transfer length and current sharing in short length MgB2 wires

Current transfer length (CTL) and current sharing with the normal paths for a metal sheathed MgB2 superconductor are studied by analytical and numerical methods. The study was aimed at wire geometries with short sample lengths. The computations show low CTL values for Fe sheathed MgB2 and significan...

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Published inSuperconductor science & technology Vol. 23; no. 10; p. 105002
Main Authors Vinod, K, Varghese, Neson, Rahul, S, Devadas, K M, Thomas, Syju, Gurusamy, P, Kedia, S, Pradhan, S, Syamaprasad, U
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.10.2010
Institute of Physics
Subjects
Applied sciences
Borides
Copper
Current sharing
Electrical engineering. Electrical power engineering
Exact sciences and technology
Iron
Magnesium compounds
Materials
Sheaths
Superconductivity
Superconductors
Wire
Transport process
Magnesium boride
Analytical method
Current distribution
Laplace equation
Numerical method
Superconducting wires
High temperature superconductor
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Summary:Current transfer length (CTL) and current sharing with the normal paths for a metal sheathed MgB2 superconductor are studied by analytical and numerical methods. The study was aimed at wire geometries with short sample lengths. The computations show low CTL values for Fe sheathed MgB2 and significantly higher CTL for Cu sheathed MgB2. For short length samples a considerable part of the applied current is not transferred into the superconducting layer and flows through the sheath in Cu sheathed conductors. Close to the current contacts the heat generated due to current sharing with normal paths is significantly higher for the Fe sheath than for the Cu sheath.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0953-2048
1361-6668
DOI:10.1088/0953-2048/23/10/105002