NDLI: Power efficiency of eddy current shielding of structural steel in transverse magnetic field

Content Provider	IEEE Xplore Digital Library
Author	Namjoshi, K.V. Biringer, P.P.
Copyright Year	1965
Abstract	The authors analyze the power efficiency of eddy current shielding of structural members from the field produced by nearby cables. A two-dimensional geometry is used for illustration. Power loss in the structure, in the absence of the shield, is compared with the aggregate power loss in the structure and in the shield when the shield is present. Results show that eddy current shielding is power efficient only when the dimension of the shield is smaller than a certain characteristic length. A criterion is proposed to assist the estimation of this characteristic length. It depends on the dimensions, the magnetic permeability, the conductivity of the structure to be shielded, and the operating frequency. In the case of nonmagnetic conductors, the effect of an eddy current shield is to reduce the power loss in the object. The aggregate power loss does not, however, decrease.<>
Sponsorship	IEEE Magnetics Society
Starting Page	2829
Ending Page	2831
Page Count	3
File Size	346733
File Format	PDF
ISSN	00189464
Volume Number	28
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1992-09-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Eddy currents Steel Magnetic shielding Cables Aggregates Conductors Conducting materials Magnetic analysis Geometry Permeability
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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