The computation of skin and proximity effects on the impedance matrix of transmission networks

Author

Fawzi, T.H. ; Ali, K.F. ; Ahmed, M.R.

Author_Institution

Dept. of Electr. Power & Machines, Cairo Univ., Giza, Egypt

Volume

31

Issue

6

fYear

1995

fDate

11/1/1995 12:00:00 AM

Firstpage

3494

Lastpage

3496

Abstract

The paper deals with the computation of the impedance matrix of transmission networks with translational or rotational symmetries. The validity of the concept of a source term derived from the dc distribution, which is an underlying assumption in most current analyses, is examined. It is shown that this approach is valid only for quasistatic magnetic fields. On the other hand, the approach based on the use of the transmission line equations is valid under much more general conditions, namely those of Kuzentsov and Stratonovich (1964). The computation of the impedance matrix through a new direct approach based on the source term concept using the volume integral equation of Manneback (1922) is presented. Numerical results are included

Keywords

busbars; electric impedance; integral equations; skin effect; transmission line matrix methods; transmission network calculations; Kuzentsov Stratonovich conditions; dc distribution; impedance matrix; numerical results; proximity effect; quasistatic magnetic fields; rotational symmetry; skin effect; source term concept; three phase busbar system; time harmonic multiconductor systems; translational symmetry; transmission line equations; transmission networks; voltage drop; volume integral equation; Coils; Computer networks; Conductors; Frequency; Impedance; Integral equations; Magnetic fields; Power transmission lines; Skin; Transmission line matrix methods;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.489547

Filename

489547