Paper Title:
A Theoretical Study on the Transfer Impedance of a Plane Current Probe
  Abstract

This paper theoretically analyzes the transfer impedance of a plane current probe. The plane current probe is an effective device that is used to measure conducted current flowing on the surface of a metal structure. One of the hot topics for plane current probe is to obtain its transfer impedance. Most research concentrates on designing calibration devices and measuring the values of the transfer impedance. However, they all do not carry out theoretical study on transfer impedance. In this paper, the equivalent circuit of the signal detection system of the probe was established based on a transformer model. Furthermore, the expression of transfer impedance was derived from the equivalent circuit. The curve shape of transfer impedance obtained from this study has a good agreement with the measured ones. This fact validates the equivalent circuit and the theoretical formula. Subsequently, influence on the value of transfer impedance was analyzed based on the expression with change of some parameters, e.g., turns of coil winding, dimension of ferrite core, permeability of ferrite core, distributed capacitance. The result gained from the above analysis will provide guidance on the design and application of the plane current probe.

  Info
Periodical
Edited by
Helen Zhang and David Jin
Pages
673-677
DOI
10.4028/www.scientific.net/AMM.63-64.673
Citation
B. W. Zhang, "A Theoretical Study on the Transfer Impedance of a Plane Current Probe", Applied Mechanics and Materials, Vols. 63-64, pp. 673-677, 2011
Online since
June 2011
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Price
$32.00
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