Present status of R&D on superconducting magnetic bearing technologies for flywheel energy storage system

被引：30

作者：

Koshizuka, N

Ishikawa, F

Nasu, H

Murakami, M

Matsunaga, K

Saito, S

Saito, O

Nakamura, Y

Yamamoto, H

Takahata, R

Oka, T

Ikezawa, H

Tomita, M

机构：

[1] ISTEC, SRL, Morioka Lab, Morioka, Iwate 0200852, Japan

[2] Shikoku Res Inst Inc, Takamatsu, Kagawa 7610192, Japan

[3] ISTEC, Superconduct Res Lab, Tamachi Lab, Minato Ku, Tokyo 1050023, Japan

[4] Ishikawajima Harima Heavy Ind Co Ltd, Koto Ku, Tokyo 1358733, Japan

[5] Sumitomo Special Met Co Ltd, Toshima Ku, Tokyo 1710033, Japan

[6] Koyo Seiko Co Ltd, Kashihara, Nara 6340008, Japan

[7] Imra Mat R&D Co, Kariya, Aichi 4480021, Japan

[8] ISTEC, Superconduct Res Lab, Koto Ku, Tokyo 1350062, Japan

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2002年 / 378卷

关键词：

superconducting magnetic bearing; flywheel energy storage system; levitation force; rotation loss; active magnetic bearing;

D O I：

10.1016/S0921-4534(02)01374-6

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report on the NEDO project of superconducting magnetic bearing (SMB) technologies for flywheel energy storage system: We fabricated SMB modules which consist of a stator of roof-tile shape YBaCuO bulks and a NdFeB permanent magnet circuit. The levitation force density of the bearings was 9 N/cm(2). It was confirmed that pre-loading and excess cooling methods are both effective for suppressing the gradual fall of rotor due to flux creep. We designed a basic concept of 10 kWh class flywheel energy storage system and investigated the feasibility of active magnetic bearings for the 10 kWh system. We also examined the fabrication condition of CFRP flywheels for the system. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：11 / 17

页数：7

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