Dielectric absorption (soakage) is a phenomenon wherein the stored electric field within the dielectric of a capacitor will cause the plates of that capacitor to recharge despite having been fully discharged. Recently Cosmin Iorga proposed a mathematical model describing dielectric absorption as an infinite sum of decaying exponentials5. We have expanded on the definition put forth by Iorga and have proposed a model for two capacitors arranged in parallel. We examine the effect of electrical short time (ts), charge voltage (Vc), capacitance (C), and dielectric material on maximum absorption signal and the average time constant of the absorption signal (t68%). While our results are consistent with those of Iorga, we did observe some divergent behavior for ts ≥ 10 seconds. Our examination suggests the possibility of using dielectric absorption as a method for sensor applications to be used in addition to current analytical techniques for characterizing dielectric materials.
|Advisor:||Dennis, Robert G.|
|Commitee:||Favorov, Oleg, Tommerdahl, Mark|
|School:||The University of North Carolina at Chapel Hill|
|Department:||Biomedical Engineering (Joint)|
|School Location:||United States -- North Carolina|
|Source:||MAI 49/02M, Masters Abstracts International|
|Keywords:||Biofuels, Capacitors, Dielectric absorption, Dielectric relaxation, Dielectric soakage|
Copyright in each Dissertation and Thesis is retained by the author. All Rights Reserved
The supplemental file or files you are about to download were provided to ProQuest by the author as part of a
dissertation or thesis. The supplemental files are provided "AS IS" without warranty. ProQuest is not responsible for the
content, format or impact on the supplemental file(s) on our system. in some cases, the file type may be unknown or
may be a .exe file. We recommend caution as you open such files.
Copyright of the original materials contained in the supplemental file is retained by the author and your access to the
supplemental files is subject to the ProQuest Terms and Conditions of use.
Depending on the size of the file(s) you are downloading, the system may take some time to download them. Please be