Establishment of Current in Conductors

Edwards, J. and Saha, T. K. (2003). Establishment of Current in Conductors. In: R. Duke, Proceedings of the Australasian Universities Power Engineering Conference. Australasian Universities Power Engineering Conference, Christchurch, New Zealand, (). 28 September - 1 October 2003.

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Author Edwards, J.
Saha, T. K.
Title of paper Establishment of Current in Conductors
Conference name Australasian Universities Power Engineering Conference
Conference location Christchurch, New Zealand
Conference dates 28 September - 1 October 2003
Proceedings title Proceedings of the Australasian Universities Power Engineering Conference
Place of Publication New Zealand
Publisher AUPEC
Publication Year 2003
Sub-type Fully published paper
ISBN 0473098679
Editor R. Duke
Total pages 7
Language eng
Abstract/Summary Currents are established on the surface of conductors by the propagation of electromagnetic waves in the insulating material between them. If the load is less than the characteristic impedance of the line, multiple reflections and retransmissions eventually build up the line current to that required by the load. The currents are initially established on the surface of the conductors before diffusing relatively slowly into the interior. These transmission and diffusion processes are fundamental to basic electrical engineering science, and their effects can be observed by applying a step input to a loaded line, and observing the load and mid-line voltages. The mid-line voltage clearly shows how the diffusion affects the propagation and reveals that the initial build up of surface current causes cables to enter a diffusion limited mode where currents have to diffuse into the interior before further propagation can take place to replenish surface currents.
Subjects 290901 Electrical Engineering
Keyword conductors
surface current
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Unknown

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Created: Wed, 23 Feb 2005, 10:00:00 EST by Tapan Kumar Saha on behalf of Faculty Of Engineering, Architecture & Info Tech