Breakdown and voltage-time characteristics of turn-to-turn models for an HTS transformer

被引：5

作者：

Baek, Seung Myeong ^{[1
]}

Kim, Sang Flyun ^{[2
,3
]}

机构：

[1] Chongwon Coll, Dept Fire Prot Engn, Chang Won 641771, South Korea

[2] Gyeongsang Natl Univ, Dept Elect Engn, Jinju 660701, South Korea

[3] Engn Res Inst, Jinju 660701, South Korea

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2008年 / 18卷 / 01期

关键词：

breakdown; electric field; high-temperature superconducting (HTS) transformer; turn-to-turn models; voltage-time characteristics;

D O I：

10.1109/TASC.2008.917537

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：

The breakdown and voltage-time characteristics of turn-to-turn models for point contact geometry and surface contact geometry using copper multiwrapped with polyimide film for a high-temperature superconducting transformer were investigated under ac and impulse voltage at 77 K. Polyimide film (Kapton) 0.025 mm thick is used for multiwrapping of the electrode. As expected, the breakdown voltages for the surface contact geometry are lower than that of the point contact geometry, because the contact area of the surface contact geometry is lager than that of the point contact geometry. The time to breakdown t(50) decreases as the applied voltage is increased, and the lifetime indexes increase slightly as the number of layers is increased. The electric field amplitude at the position where breakdown occurs is about 80% of the maximum electric field value.

引用

页码：36 / 41

页数：6

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