Numerical Computation of AC Losses and Flux Profiles in High-Aspect-Ratio Superconducting Strips in Perpendicular AC Magnetic Field

被引：21

作者：

Thakur, Kailash Prasad ^{[1
]}

Staines, Michael Philip ^{[1
]}

Lakshmi, L. Seetha ^{[1
]}

Long, Nicholas J. ^{[1
]}

机构：

[1] Ind Res Ltd, Lower Hutt 5054, New Zealand

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2009年 / 19卷 / 06期

关键词：

Ferromagnetic substrate; finite-element methods (FEMs); magnetization loss; modeling; superconducting tape; TRANSPORT CURRENT LOSS; HTS COATED CONDUCTOR; SUBSTRATE;

D O I：

10.1109/TASC.2009.2025887

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We present the results of finite-element modeling of a YBCO thin-film superconductor deposited on a nonmagnetic substrate and on a weakly ferromagnetic substrate. The model was implemented using commercial software to calculate the ac loss in the presence of a sinusoidal external magnetic field applied perpendicular to the surface of the superconducting tape. A strategy is demonstrated to overcome the difficulties in the finite-element method due to the high aspect ratio of the YBCO film by using the computed values of ac loss for thicker samples to extrapolate the results to the actual physical thickness of the superconductor (similar to 1 mu m). The effect of the width of the weekly ferromagnetic substrate upon the ac loss of the superconductor film has also been studied.

引用

页码：3770 / 3778

页数：9

共 32 条

[1] Finite element analysis of AC loss in non-twisted Bi-2223 tape carrying AC transport current and/or exposed to DC or AC external magnetic field [J].