A circuital approach to estimate the magnetic field reduction of nonferrous metal shields

Author

Frix, William M. ; Karady, George G.

Author_Institution

Arizona State Univ., Tempe, AZ, USA

Volume

39

Issue

1

fYear

1997

fDate

2/1/1997 12:00:00 AM

Firstpage

24

Lastpage

32

Abstract

The reduction of magnetic fields is a topic of concern to the electric utility industry and the electromagnetic compatibility community. One technique to reduce the magnetic fields is to use metal plates and enclosures for shielding, in addition, knowledge or the loading effect of a conducting structure in close proximity to power cables is needed for estimating power loss. Until now there has not been a simple and efficient method to calculate the low frequency magnetic shielding of, nor power loss caused by, two-dimensional shields. This paper presents a method for the rapid numerical estimation of the magnetic shielding efficiency and power loss of nonferrous metal structures. The method was validated analytically and experimentally

Keywords

conductors (electric); eddy current losses; eddy currents; electromagnetic compatibility; electromagnetic induction; magnetic fields; magnetic shielding; EM induction; conducting structure; eddy current; electric utility industry; electromagnetic compatibility community; experiment; loading effect; low frequency magnetic shielding; magnetic field reduction; magnetic shielding efficiency; metal enclosures; metal plates; nonferrous metal shields; numerical estimation; power cables; power loss; power loss estimation; two-dimensional shields; Electromagnetic shielding; Frequency; Geophysical measurement techniques; Ground penetrating radar; Integral equations; Magnetic analysis; Magnetic circuits; Magnetic shielding; Power cables; Power industry;

fLanguage

English

Journal_Title

Electromagnetic Compatibility, IEEE Transactions on

Publisher

ieee

ISSN

0018-9375

Type

jour

DOI

10.1109/15.554692

Filename

554692