NDLI: Finite element method simulation of AC loss in HTS tapes with B-dependent E-J power law

Content Provider	IEEE Xplore Digital Library
Author	Nibbio, N. Stavrev, S. Dutoit, B.
Copyright Year	2002
Abstract	The nonlinear behavior of high temperature superconductors (HTS) is often modeled by an E-J power law in order to describe their electromagnetic properties. This paper presents AC loss calculations in HTS tapes, performed by means of FEM commercial software using the A-V method. The implemented nonlinear model of the HTS tapes takes into account the B-dependence of the critical current density J/sub c/ and the power index n. The expressions for J/sub c/(B) and n(B) are obtained from electrical measurements of a Bi-2223 tape under applied DC magnetic field. Numerical simulations of HTS tapes under different experimental conditions have been performed, i.e. the application of a transport current and/or AC external perpendicular magnetic field at 59 Hz. A comparative analysis of AC loss is then presented where J/sub c/ and n are maintained either constant or B-dependent. The combined J/sub c/(B) and n(B) formulation leads to a better understanding of HTS electromagnetic behavior, especially when a perpendicular magnetic field is applied.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	2631
Ending Page	2634
Page Count	4
File Size	384462
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	Finite element methods High temperature superconductors Magnetic field measurement Electromagnetic modeling Software performance Critical current density Electric variables measurement Numerical simulation Magnetic analysis Performance analysis
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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