Magnetic shielding of small high power SMES

Author

Brammer, U. ; Lorenzen, H.W.

Author_Institution

Lehrstuhl fur Elektrische Maschinen, Tech. Univ. Munchen, Germany

Volume

5

Issue

2

fYear

1995

fDate

6/1/1995 12:00:00 AM

Firstpage

329

Lastpage

332

Abstract

Small high power SMES in toroidal and solenoidal geometries are compared. The toroidal 1.4 MJ SMES currently under construction at Technische Universitat Munchen serves as example. The hypothetical equivalent solenoid is surrounded by a ferromagnetic shield, so that the stray field of the toroidal SMES is not exceeded. The shape of the shield is optimized with respect to the mass by using a stochastic strategy in combination with a deterministic method. Finally the superconductor losses and the eddy current losses in the shield are calculated for a sinusoidal load cycle.<>

Keywords

design engineering; eddy current losses; eddy currents; equivalent circuits; magnetic shielding; optimisation; stochastic processes; superconducting magnet energy storage; superconducting magnets; 1.4 MJ; SMES; deterministic method; eddy current losses; equivalent solenoid; ferromagnetic shield; magnetic shielding; sinusoidal load cycle; solenoidal geometry; stochastic strategy; stray field; superconductor losses; toroidal geometry; Frequency; Geometry; Magnetic shielding; Optimization methods; Samarium; Solenoids; Superconducting cables; Superconducting magnetic energy storage; Superconducting magnets; Temperature;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.402556

Filename

402556