Measurement of Dielectric Absorption of Capacitors by Signal Decomposition

Linus Michaeli, Ján Šaliga, Marek Godla, Jozef Lipták

Abstract

The paper presents method of the measurement of dielectric absorption components by the analysis of discharging exponential signal from the capacitor. The method uses maximum likelihood estimation as an alternative to the Prony’ s method. The advantage of the proposed method is the suppression of the uncertainties of recovering process caused by finite input resistance and vaguely defined discharging time. The possibility to minimize the effects of integral nonlinearities of Analog-to-Digital Converter is another advantage. The comparison of the experimental results with the simulation allows assessing the accuracy of proposed approach.

Keywords

Dielectric absorption of capacitors, Signal distortion by dielectric absorption, Signal decomposition, Maximum liklehood method.

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IMEKO-TC4-2014-262.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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