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

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 struc...

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Bibliographic Details
Published in:IEEE transactions on electromagnetic compatibility 1997-02, Vol.39 (1), p.24-32
Main Authors: Frix, W.M., Karady, G.G.
Format: Article
Language:English
Subjects:
Applied sciences
Electromagnetic compatibility
Electromagnetic shielding
Exact sciences and technology
Frequency
Geophysical measurement techniques
Ground penetrating radar
Information, signal and communications theory
Integral equations
Magnetic analysis
Magnetic circuits
Magnetic shielding
Power cables
Power industry
Telecommunications and information theory
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Summary: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.
ISSN:0018-9375
1558-187X
DOI:10.1109/15.554692