Conductor and vessel losses in bath cooled SMES systems

Author

Eyssa, Y.M.

Author_Institution

Appl. Superconductivity Center, Wisconsin Univ., Madison, WI, USA

Volume

27

Issue

2

fYear

1991

fDate

3/1/1991 12:00:00 AM

Firstpage

2308

Lastpage

2311

Abstract

Several AC and DC loss sources are analyzed for superconductive magnetic energy storage (SMES) solenoids cooled in a bath of 1.8-K helium. The AC losses (eddy current losses) in the solenoid of the helium vessel and due to conductor stabilizer coupling loss are calculated for different charge or discharge sequences. The losses in the helium vessel are found for vessels both with and without an electric break. The analysis of DC loss for conductor joints takes into account several NbTi/Cu strands twisted around a high-purity aluminum stabilizer conductor. The resistance of the conductor joint depends on the electrical resistance of the bond between the strand and the aluminum and the distribution of joints staggered in position on the aluminum stabilizer

Keywords

eddy current losses; solenoids; superconducting magnet energy storage; 1.8 K; AC loss sources; DC loss sources; NbTi-Cu; bath cooled SMES systems; charge sequences; conductor joint; conductor stabilizer coupling loss; discharge sequences; eddy current losses; electric break; electrical resistance; solenoids; superconductive magnetic energy storage; vessel losses; Aluminum; Conductors; Electric resistance; Energy storage; Helium; Magnetic analysis; Samarium; Solenoids; Superconducting magnetic energy storage; Superconductivity;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.133679

Filename

133679