NDLI: Effect of the geometry of HTS on AC loss by using finite element method simulation with B-dependent E-J power law

Content Provider	IEEE Xplore Digital Library
Author	Nibbio, N. Stavrev, S.
Copyright Year	2002
Abstract	Mono and multifilamentary HTS tapes exhibit nonnegligible AC loss in self-field and considerably higher losses in the presence of external magnetic field. The effect of the conductor's geometry on the AC loss has been investigated in this paper. The nonlinear electromagnetic properties of the superconducting material are expressed with a B-dependent E-J power law and are implemented in finite element method commercial software. The critical current density and the power index n dependence on B are obtained from DC measurements of a real Bi-2223 tape. AC loss comparison between monofilamentary conductors of rectangular, elliptical, square and round geometry has been performed in self-field and applied external perpendicular magnetic field. The areas of the cross-section and the superconducting-core-to-Ag ratio have been kept constant in the simulations. To complement the AC loss analysis, the distribution of the current density and the magnetic field of the different geometries are presented.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	2627
Ending Page	2630
Page Count	4
File Size	403887
File Format	PDF
ISSN	10518223
Volume Number	11
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Geometry High temperature superconductors Finite element methods Magnetic fields Magnetic field measurement MONOS devices Superconducting materials Critical current density Density measurement Current measurement
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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