NDLI: DC current distributions and magnetic fields using the T-omega edge-element method

Content Provider	IEEE Xplore Digital Library
Author	Webb, J.P. Forghani, B.
Copyright Year	1965
Abstract	When steady currents flow in solid conductors, the current distributions are not known in advance, and a 3D finite-element analysis of the magnetostatic fields must also involve an analysis of the currents. To find the currents, either of two potentials can be used: the electric scalar potential or a vector potential T for the current density. The scalar potential has the disadvantage of producing a current density that is only approximately solenoidal, and is therefore incompatible with Ampere's Law for the magnetic field. The vector potential gives solenoidal currents. It may conveniently be found by applying the T-/spl Omega/ edge element method, an existing method for eddy current problems, in one of two ways: setting the frequency so low that the DC solution is obtained; or solving first for T, then for /spl Omega/. Either way, both the current distribution and the magnetic field are obtained, and the solution is ideally suited for subsequent transient analysis. Results from three test problems confirm the validity of the method.<>
Sponsorship	IEEE Magnetics Society
Starting Page	1444
Ending Page	1447
Page Count	4
File Size	333107
File Format	PDF
ISSN	00189464
Volume Number	31
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-05-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Current distribution Magnetic fields Magnetic analysis Current density Solids Conductors Finite element methods Magnetostatics Electric potential Eddy currents
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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