APPLICATION OF HIGH-Tc SUPERCONDUCTOR TO CURRENT LIMITING DEVICES

被引：7

作者：

Ikegami, Tomoaki ^{[1
]}

Yamagata, Yukihiko ^{[1
]}

Ebihara, Kenji ^{[1
]}

Nakajima, Hajime ^{[2
]}

机构：

[1] Kumamoto Univ, Dept Elect Engn & Comp Sci, 2-39-1 Kurokami, Kumamoto 860, Japan

[2] Kyushu Elect Power Co Ltd, Kumamoto Branch, Jyoto, Kumamoto 860, Japan

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1993年 / 3卷 / 01期

关键词：

D O I：

10.1109/77.233769

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：

Resistive characteristics of YBa2Cu3O7-x superconducting thin film quenched by a current were investigated. The thin films were prepared on MgO substrates by the laser ablation method and currents of different wave forms were fed to it for few tens milliseconds in a liquid nitrogen to measure a temporal resistance. A resistance appeared quickly above a critical current then increased to about 8 Omega within few milliseconds which depended on an input power to the film. To investigate characterisitcs of the current-quenched superconducting film, a 1 dimensional heat transfer equation was numerically solved using a finite-difference method. Comparing these experimental and numerical results it was found that non-uniformities in a current density or a temperature may exist in the quenching thin film.

引用

页码：566 / 569

页数：4