Shielding and losses in multifilamentary tapes exposed to perpendicular AC magnetic fields

Author

Farinon, Stefania ; Fabbricatore, Pasquale ; Gömöry, Fedor ; Seiler, Eugen

Author_Institution

Ist. Nazionale di Fisica Nucl., Genova, Italy

Volume

11

Issue

1

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

2776

Lastpage

2779

Abstract

In multifilamentary high-T_c tapes for energy transportation, a component of magnetic field is applied normally to the filament surfaces. Since the thickness of any filament of the tape is much smaller than the width (the factor is usually between 10 and 20), it results in large field amplification on the tape surface and consequently a large loss. This problem is studied in detail here, analysing the behavior of Bi 2223/Ag tapes with different structures of the filamentary zone. Experimental data are compared with calculations based on finite element codes. The importance of filament arrangement for AC losses is illustrated

Keywords

bismuth compounds; calcium compounds; finite element analysis; high-temperature superconductors; magnetic leakage; magnetic shielding; multifilamentary superconductors; silver; strontium compounds; superconducting tapes; AC losses; Bi₂Sr₂Ca₂Cu₃O-Ag; filament thickness; finite element codes; high-T_c tapes; multifilamentary tapes; perpendicular AC magnetic fields; shielding; Finite element methods; High temperature superconductors; Magnetic analysis; Magnetic fields; Magnetic shielding; Magnetic susceptibility; Multifilamentary superconductors; Strips; Superconducting films; Transportation;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.919639

Filename

919639