Development of REBCO Superconducting Transformers With a Current Limiting Function

被引：14

作者：

Iwakuma, M. ^{[1
]}

Katanosaka, Y. ^{[1
]}

Sato, S. ^{[1
]}

Hayashi, H. ^{[2
]}

Okamoto, H. ^{[2
]}

Gosho, Y. ^{[2
]}

Tomioka, A. ^{[3
]}

Konno, M. ^{[3
]}

Iijima, Y. ^{[4
]}

Saitoh, T. ^{[4
]}

Ohkuma, T. ^{[5
]}

Tagomori, A. ^{[5
]}

Izumi, T. ^{[5
]}

Shiohara, Y. ^{[5
]}

机构：

[1] Kyushu Univ, Res Inst Superconductor Sci & Syst, Fukuoka 8190395, Japan

[2] Kyushu Elect Power Co Inc, Fukuoka 8158520, Japan

[3] Fuji Elect Co Ltd, Chiba 2908511, Japan

[4] Fujikura Ltd, Tokyo 1358512, Japan

[5] Int Superconduct Technol Ctr, Tokyo 1350062, Japan

来源：

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

关键词：

Current limiter; REBCO; superconductor; transformer;

D O I：

10.1109/TASC.2012.2232345

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 designed and fabricated a 10 kVA single-phase transformer with RE1Ba2Cu3O7-delta (REBCO, RE: Rare Earth, Y, Gd, etc.) superconducting tapes. It had a 4-winding structure at the beginning. In this study, we removed the auxiliary windings and made a test as a general 2-winding transformer. Making repeated short circuit tests, we further investigated the response of the REBCO superconducting windings against a fault excess current. Although the short circuit current decayed satisfactorily, the whole of the REBCO superconducting windings did not shift to normal state even if the short circuit current exceeded the critical current all over the length of REBCO tapes. The induced normal resistance depended on the primary voltage. To study the phenomena, we derived the basic equations and made numerical simulations taking into account of flux-flow state, in which the equivalent resistance and generated heat are much smaller than those in normal state, and also the dependences of the critical current on temperature, applied magnetic field and the applied field angle to the tape face. It was clarified that short circuit current was limited not only by normal resistance but also by flux-flow one. The introduction of the concept of flux-flow state made it possible to quantitatively explain the behavior of the REBCO superconducting transformer at a sudden short circuit.

引用

页数：4

共 5 条

[1] ABNORMAL QUENCH PROCESS WITH VERY FAST ELONGATION OF NORMAL ZONE IN MULTISTRAND SUPERCONDUCTING CABLES
IWAKUMA, M
KANETAKA, H
TASAKI, K
FUNAKI, K
TAKEO, M
YAMAFUJI, K
[J]. CRYOGENICS, 1990, 30 (08) : 686 - 692
[2] QUENCH ANALYSIS IN A 72 KVA SUPERCONDUCTING 4-WINDING POWER TRANSFORMER
IWAKUMA, M
FUNAKI, K
KANETAKA, H
TASAKI, K
TAKEO, M
YAMAFUJI, K
[J]. CRYOGENICS, 1989, 29 (11) : 1055 - 1062
[3] Development of a REBCO Superconducting Transformer With Current Limiting Function
Iwakuma, M.
Tomioka, A.
Otonari, T.
Ogata, T.
Tsutsumi, T.
Sato, S.
Hayashi, H.
Okamoto, H.
Iijima, Y.
Saitoh, T.
Aoki, Y.
Koizumi, T.
Hasegawa, T.
Ohkuma, T.
Gosho, Y.
Yamada, Y.
Izumi, T.
Shiohara, Y.
[J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2011, 21 (03) : 1405 - 1408
[4] Development of REBCO superconducting power transformers in Japan
Iwakuma, M.
Hayashi, H.
Okamoto, H.
Tomioka, A.
Konno, M.
Saito, T.
Iijima, Y.
Suzuki, Y.
Yoshida, S.
Yamada, Y.
Izumi, T.
Shiohara, Y.
[J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2009, 469 (15-20): : 1726 - 1732
[5] Design and test of current limiting modules using YBCO-coated conductors
Schmidt, W.
Gamble, B.
Kraemer, H-P
Madura, D.
Otto, A.
Romanosky, W.
[J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2010, 23 (01)

← 1 →