An improved technique for space charge distribution measurements in solid dielectrics

Author

Abou Dakka, M. ; Bulinski, A.T. ; Bamji, S.S.

Author_Institution

Nat. Res. Council of Canada, Ottawa, Ont., Canada

fYear

2002

fDate

16-21 June 2002

Firstpage

12

Lastpage

13

Abstract

A newly developed numerical analysis technique based on inverse matrix calculations is described. It is used to de-convolute electric current waveforms into the space charge and electric field distributions after subjecting solid dielectric samples to a thermal step and measuring the current induced in the external circuit by the perturbation of space charges in the material due to the heat flow. The technique gives significantly lower errors and requires less computation time than commonly used Fourier analysis.

Keywords

deconvolution; dielectric measurement; electric breakdown; heat transfer; insulation; matrix algebra; measurement errors; numerical analysis; perturbation techniques; space charge; Fourier analysis; electric current waveform de-convolution; electric field distributions; external circuit induced current; heat flow space charge perturbation; high-voltage insulation applications; insulation breakdown; inverse matrix calculations; measurement errors; numerical analysis techniques; solid dielectric materials; space charge accumulation; space charge distribution measurement technique; space charge distributions; technique computation time; thermal step method; Charge measurement; Circuits; Current measurement; Dielectric measurements; Electric variables measurement; Fluid flow measurement; Numerical analysis; Solids; Space charge; Space heating;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements, 2002. Conference Digest 2002 Conference on

Conference_Location

Ottawa, Ontario, Canada

Print_ISBN

0-7803-7242-5

Type

conf

DOI

10.1109/CPEM.2002.1034695

Filename

1034695