Modélisation électrique et énergétique des supercondensateurs et méthodes de caractérisation : Application au cyclage d'un module de supercondensateurs basse tension en grande puissance

Abstract : This document presents a study of the electrical and energetic behaviour of supercapacitors under conditions similar to industrial applications' ones. For that, a test bench has been developed in our laboratory in order to characterize a supercapacitors' module (112F-48V) composed of 24 elements of 2700F/2,3V.
The goal of this work was firstly to evaluate the precision of the existing model about the electrical and energetic characteristics and secondly to improve this precision. For that, two models representing the energetic and electrical behaviour of these components are developed. These models are obtained by a simple identification of the data measured during the cycling tests using frequential and temporal approaches.
Numerous electrical and thermal data are obtained during the cycling test of the module. These data are used to observe the evolution of the equivalent capacity and resistance of several supercapacitor elements of the tested module according to the temperature. For the first 200.000 cycles, the ageing process of supercapacitors and the variation of the module parameters during all the life of this tested module are presented. This study allowed to obtain information about the degradation (R, rs and C) according to the number of cycles carried out.
Finally, the tests of cycling done without balancing device (except the impedance of the measurement system) allow to observe a natural dispersion of the voltage according to the position of the components in the module.
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Submitted on : Friday, April 21, 2006 - 5:27:08 PM
Last modification on : Wednesday, October 17, 2018 - 2:52:05 PM
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Nassim Rizoug. Modélisation électrique et énergétique des supercondensateurs et méthodes de caractérisation : Application au cyclage d'un module de supercondensateurs basse tension en grande puissance. Energie électrique. Université des Sciences et Technologie de Lille - Lille I, 2006. Français. ⟨tel-00012169⟩

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