Progress of superconducting bearing technologies for flywheel energy storage systems

被引：41

作者：

Koshizuka, N

Ishikawa, F

Nasu, H

Murakami, M

Matsunaga, K

Saito, S

Saito, O

Nakamura, Y

Yamamoto, H

Takahata, R

Itoh, Y

Ikezawa, H

Tomita, M

机构：

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

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

[3] ISTEC, SRL, Tamachi Lab, 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 Ltd, Kariya, Aichi 4480021, Japan

[8] ISTEC, SRL, Koto Ku, Tokyo 135, Japan

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2003年 / 386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)02206-2

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report present status of NEDO project on "Superconducting bearing technologies for flywheel energy storage systems". We fabricated a superconducting magnetic bearing module consisting of a stator of resin impregnated YBaCuO bulks and a rotor of NdFeB permanent magnet circuits. We obtained levitation force density of 8 N/cm(2) at 81 K and rotation loss per levitation force of 3 mW/N at 77 K. We confirmed that both pre-loading and excess cooling methods are effective for suppressing gradual fall of rotor due to flux creep. We designed a 10 kWh class flywheel energy storage test system and investigated feasibility of active magnetic bearings for controlling rotation axis vibration under high speed rotation of the flywheel. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：444 / 450

页数：7

共 10 条

[1]

DEMACHI K, IN PRESS

[2] Superconductivity, an enabling technology for 21st century power systems? [J].