Title :
Magnetic shielding of small high power SMES
Author :
Brammer, U. ; Lorenzen, H.W.
Author_Institution :
Lehrstuhl fur Elektrische Maschinen, Tech. Univ. Munchen, Germany
fDate :
6/1/1995 12:00:00 AM
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;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
