Finite-element modelling of YBCO fault current limiter with temperature dependent parameters

被引：61

作者：

Duron, J. ^{[1
]}

Grilli, F. ^{[1
]}

Antognazza, L. ^{[1
]}

Decroux, M. ^{[1
]}

Dutoit, B. ^{[1
]}

Fischer, O. ^{[1
]}

机构：

[1] Swiss Fed Inst Technol, CH-1015 Lausanne, Switzerland

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2007年 / 20卷 / 04期

关键词：

D O I：

10.1088/0953-2048/20/4/007

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this paper, we present a numerical model which takes into account both the thermal and the electromagnetic aspects of the over-critical current regime for high-temperature superconducting (HTS) materials. The electromagnetic and thermal equations have been implemented in finite-element method (FEM) software in order to obtain a novel model for investigating the behaviour of the materials when the current exceeds I-c and the superconductor material goes to the normal state. The thermal dependence of the electrical parameters, such as the critical current density J(c), has been introduced. This model has been used to analyse the behaviour of strip lines of a YBCO/Au fault current limiter (FCL) on a sapphire substrate. Simulations with currents exceeding Ic have been performed, showing that the current limitation phase can be correctly reproduced. Such a model can be used to study the influence of the geometry on the performance of the FCL. It can replace experiments with currents exceeding I-c which may damage or destroy HTS samples and devices.

引用

页码：338 / 344

页数：7

共 23 条

[11] 3-D finite element simulations of strip lines in a YBCO/Au fault current limiter [J].