Temperature Characteristic of a Conduction-Cooled HTS SMES Magnet

Author

Shi, Jing ; Tang, Yuejin ; Li, Zhi ; Ren, Li ; Li, Jingdong ; Cheng, Shijie

Author_Institution

R&D Center of Appl. Supercond., Huazhong Univ. of Sci. & Technol., Wuhan, China

Volume

19

Issue

3

fYear

2009

fDate

6/1/2009 12:00:00 AM

Firstpage

2044

Lastpage

2047

Abstract

A 35 kJ/7 kW conduction-cooled HTS SMES is developed. The magnet of the SMES is a solenoid type coil, made of Bi2223/Ag tapes, and cooled to about 20 K by a cryocooler through conduction-cooled method. To evaluate the performance of the 35 kJ/7 kW SMES, system characteristics such as current carrying ability, power conditioning capability and dynamic operation for stabilizing power systems are investigated by experiments. In this paper, the temperature characteristic of the conduction-cooled HTS magnet for 35 kJ/7 kW SMES is analyzed. Experimental results verify that the thermal stability of the HTS magnet can meet the requirement of dynamic power compensation. Integrating with the analysis of the energy loss in dynamic operation of the magnet, the methods to reduce the energy loss and improve the thermal stability of the conduction-cooled HTS SMES magnet are discussed.

Keywords

high-temperature superconductors; superconducting magnet energy storage; superconducting magnets; thermal stability; conduction-cooled HTS SMES magnet; cryocooler; current carrying ability; energy 35 kJ; power 7 kW; power conditioning capability; solenoid type coil; stabilizing power systems; temperature 20 K; thermal stability; Conduction-cooled; SMES; high temperature superconductors; temperature characteristic;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2009.2018098

Filename

5067150