Diagnosis of Winding Conditions in High Temperature Superconducting Coils by Applying Poynting's Vector Method

被引：3

作者：

Kawagoe, A. ^{[1
]}

Moribe, H. ^{[1
]}

Kakiyama, K. ^{[1
]}

Sumiyoshi, F. ^{[1
]}

机构：

[1] Kagoshima Univ, Kagoshima 890065, Japan

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2013年 / 23卷 / 03期

关键词：

Diagnosis; monitoring; Poynting's vector method; quench; superconducting coil;

D O I：

10.1109/TASC.2013.2238575

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 have proposed a new method for detecting unusual local conditions in a high-temperature superconducting coil. In this method, two kinds of pick up coils for measuring electric fields and magnetic fields are used to obtain Poynting's vectors around the coil. This is a noncontact method using pick-up coils around the vessel for cooling the coil. The method has the following benefits: safe detection, easy handling, high sensitivity, and high usability. The purpose of this paper is to clarify the relation of measured signals to the conditions of the windings. When a temperature rise has been produced locally in the Bi-2223 solenoidal coil, Poynting's vectors around the coil and the temperature of windings were measured. It was found that the measured signals rapidly decrease as the temperature of the winding achieved a critical level, making this a reliable method to estimate the conditions in the windings.

引用

页数：4

共 6 条

[1] The contactless detection of local normal transitions in superconducting coils by using Poynting's vector method [J].