Continuum gradient-based shape optimization of conducting shields for power frequency magnetic field mitigation

Author

Liu, Yueqiang ; Sousa, P., Jr. ; Salinas, E. ; Cruz, P. ; Daalder, J.

Author_Institution

Dept. of Appl. Mech., Chalmers Univ. of Technol., Goteborg

Volume

42

Issue

4

fYear

2006

fDate

4/1/2006 12:00:00 AM

Firstpage

1215

Lastpage

1218

Abstract

A shape optimization technique for quasistatic field problems has been developed. The optimization is based on computing the continuum sensitivity function by solving an adjoint problem. We show how this technique can be used to compute, in a very efficient way, the optimal shape of a conducting (or ferromagnetic) shielding structure, in order to minimize the magnetic field in the region of interest. A two-dimensional example of shielding three-phase underground cables is considered

Keywords

conducting materials; gradient methods; magnetic fields; magnetic shielding; optimisation; conducting shielding structure; conducting shields; continuum gradient-based shape optimization; continuum sensitivity function; ferromagnetic shielding structure; power frequency magnetic field mitigation; quasistatic field problems; three-phase underground cables; Cables; Conductors; Design optimization; Eddy currents; Frequency; Magnetic shielding; Magnetostatics; Power engineering and energy; Power engineering computing; Shape; Continuum gradient; eddy currents; magnetic shielding; optimization methods;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2006.871372

Filename

1608431