Electrodynamics of multifilament superconductors

A general scheme for electrodynamics of composite multifilament superconductors is presented. Our approach is based on an anisotropic continuum model for a multifilament wire taking into account smooth dependence of superconductor conductivity on temperature, magnetic field and current density. The...

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Bibliographic Details
Published in:Cryogenics (Guildford) 2010-05, Vol.50 (5), p.359-365
Main Authors: Klimenko, E.Yu, Chechetkin, V.R., Khayrutdinov, R.R., Solodovnikov, S.G.
Format: Article
Language:English
Subjects:
A. Composite conductors
A. Multifilament wires and tapes
A. Superconductors
C. Electrical conductivity
C. Electromagnetic phenomena
Current density
Dynamics
Electrodynamics
Magnetic fields
Mathematical analysis
Mathematical models
Superconductors
Wire
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Summary:A general scheme for electrodynamics of composite multifilament superconductors is presented. Our approach is based on an anisotropic continuum model for a multifilament wire taking into account smooth dependence of superconductor conductivity on temperature, magnetic field and current density. The electrodynamics equations are self-consistently treated together with heat transfer. On the base of this scheme, 2D codes were developed for simulation of non-stationary processes in composite superconductors. A comparison of current density dynamics in twisted and non-twisted multifilament wires is presented as an example. The dynamics of current density in a twisted wire proved to be determined by two characteristic times and differs from the predictions based on the critical state model.
ISSN:0011-2275
1879-2235
DOI:10.1016/j.cryogenics.2010.03.001