Reduction of AC Losses in Bi-2223 Tapes by Introducing Interfilamentary Oxide Barriers

被引：3

作者：

Inada, Ryoji ^{[1
]}

Mitsuno, Yoshiki ^{[1
]}

Soguchi, Kazuma ^{[1
]}

Nakamura, Yuichi ^{[1
]}

Oota, Akio ^{[1
]}

Li, Chengshan ^{[2
]}

Zhang, Pingxiang ^{[2
]}

机构：

[1] Toyohashi Univ Technol, Dept Elect & Elect Engn, Aichi 4418580, Japan

[2] NW Inst Nonferrous Met Res, Xian 710016, Shaanxi, Peoples R China

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2009年 / 19卷 / 03期

关键词：

AC loss; Bi-2223; tapes; filament twisting; interfilamentary barriers; MAGNETIC-FIELDS; TWISTED FILAMENTS; RESISTIVE BARRIER; LOSS MECHANISMS; AG; MATRIX;

D O I：

10.1109/TASC.2009.2018187

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：

AC loss reduction in Bi-2223 tapes is one of the key issues for the realization of power cables and transformers. The large loss generation is mainly attributed to the strong electromagnetic coupling between the filaments in AC external magnetic field. In this paper, we fabricated twisted Bi-2223 tapes with interfilamentary oxide barrier and evaluate their AC loss properties. To suppress the side effect on Bi-2223 phase formation during sintering, Ca2CuO3 or SrZrO3 powders were used as barrier materials. Furthermore, small amounts of Bi-2212 powders were mixed with them to improve their ductility for cold working. AC loss characteristics were examined at 77 K in parallel and perpendicular transverse magnetic fields with various field amplitudes and frequencies. The effect of introducing different oxide barriers on AC loss reduction at different operating condition is discussed.

引用

页码：3018 / 3021

页数：4

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