Development of Large Scale Superconducting Magnet With Very Small Stray Magnetic Field for 2 MJ SMES

Author

Wang, Qiuliang ; Dai, Yinming ; Zhao, Baozhi ; Song, Souseng ; Cao, Zhiqiang ; Chen, Shunzhong ; Zhang, Quan ; Wang, Housheng ; Cheng, Junsheng ; Lei, Yuangzhong ; Li, Xian ; Liu, Jianhua ; Zhao, Shangwu ; Zhang, Hongjie ; Xu, Guoxing ; Yang, Zaimin ; Hu,

Author_Institution

Inst. of Electr. Eng., Chinese Acad. of Sci., Beijing, China

Volume

20

Issue

3

fYear

2010

fDate

6/1/2010 12:00:00 AM

Firstpage

1352

Lastpage

1355

Abstract

A superconducting magnet for the superconducting magnetic energy storage system (SMES) fabricated by NbTi monolithic conductor is cooled down and operated at the temperature of liquid helium. The large-scale superconducting magnet with four parallel solenoids was designed, fabricated and tested for the high storage energy density SMES. The superconducting magnet stores 2 MJ of energy with a current of 490 A and a peak magnetic field of 5.4 T. Two GM cryo-coolers cool the whole system to realize zero evaporation of liquid helium. The high temperature superconducting current leads of Bi2223 are used and cooled through one GM cryocooler. The ZnO resistor is used to protect the superconducting magnet. In the paper, the system of superconducting magnet is introduced in detail for the superconducting magnetic energy storage system.

Keywords

niobium compounds; superconducting magnet energy storage; superconducting magnets; titanium compounds; zinc compounds; NbTi; SMES; cryocoolers; current 490 A; energy 2 MJ; large scale superconducting magnet; monolithic conductor; superconducting magnetic energy storage system; High storage energy density of SMES; ZnO resistor; superconducting magnet; zero vapor liquid helium;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2009.2039471

Filename

5428807