Study on characteristics of high temperature superconducting magnetic thrust bearing for 25 kW h flywheel

被引：7

作者：

Nagaya, S

Kashima, N

Minami, M

Kawashima, H

Unisuga, S

Kakiuchi, Y

Ishigaki, H

机构：

[1] Mitsubishi Heavy Ind Co Ltd, Takasago R&D Ctr 1 1, Takasago, Hyogo 6768686, Japan

[2] Chubu Elect Power Co Inc, Elect Power Res & Dev Ctr 20 1, Midori Ku, Nagoya, Aichi 4598522, Japan

[3] Mitsubishi Heavy Ind Co Ltd, Takasago Machinery Works 1 1, Takasago, Hyogo 6768686, Japan

[4] Himeji Inst Technol, Himeji, Hyogo 6712201, Japan

来源：

PHYSICA C | 2001年 / 357卷 / SUPPL. 2期

关键词：

superconducting magnetic bearing; cryogenic refrigerator; spring coefficient; damping coefficient;

D O I：

10.1016/S0921-4534(01)00428-2

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An axial air gap type thrust bearing of the outer diameter of 620 nun for 25 kW h flywheel which combined with the permanent magnet of Nd-Fe-B and 10 pieces of high temperature YBaCuO superconductors of the diameter of 150 mm directly cooled by the refrigerator was fabricated, and its performance tests were conducted. Load capacity which could support a planned rotor weight of 8.2 kN was confirmed, and also the stiffness of the radial direction and the axial direction were measured in case of several initial cooling conditions. Spring and damping coefficients in zero field cooling were also measured in the tapping test, and it was found that axial spring coefficients were about 10 times as large as radial spring coefficients, though damping coefficients were almost the same. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：866 / 869

页数：4