Design of SMES with reduced stray field

Author

Schonwetter, G. ; Gerhold, J.

Author_Institution

Inst. of Electromagn. Energy Conversion, Tech. Univ. Graz, Austria

Volume

5

Issue

2

fYear

1995

fDate

6/1/1995 12:00:00 AM

Firstpage

337

Lastpage

340

Abstract

A design for an improved 50 kWh SMES arrangement was made concerning the selection of an appropriate conductor, the determination of forces, efficient quench protection and mechanical strength calculation. The improvement relates to a drastic reduction of the magnetic stray field. This goal can be obtained by adding a second or even a third solenoid in such a way that the magnetic moments of all solenoids neutralize each other. Various methods to reduce the stray field were discussed and then the most promising solution-the one which produces the smallest magnetic stray field in combination with acceptable geometrical dimensions and conductor amounts-was analysed for further design. The coil calculation was based on a typical NbTi superconductor in order to match its critical data with the results of the optimized coil configuration.<>

Keywords

magnetic fields; magnetic moments; mechanical strength; niobium alloys; solenoids; superconducting magnet energy storage; titanium alloys; NbTi; SMES; coil calculation; conductor amounts; critical data; geometrical dimensions; magnetic moments; magnetic stray field; mechanical strength calculation; optimized coil configuration; quench protection; reduced stray field; solenoid; Conductors; Magnetic analysis; Magnetic moments; Niobium compounds; Protection; Samarium; Solenoids; Superconducting coils; Superconducting magnetic energy storage; Titanium compounds;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.402558

Filename

402558