MODELS AND MODELLING THE SUPERCAPACITORS FOR A DEFINED APPLICATION
Journal Title: ANALELE UNIVERSITATII DIN CRAIOVA - Seria Inginerie electrica - Year 2011, Vol 35, Issue 35
Abstract
Supercapacitors, located in the middle of the energy storage devices’ hierarchy, present unique advantages that make them indispensable for applications which require high power delivered in a short time. Establishing the appropriateness of strategies for using these devices is through knowing the supercapacitor’s behavior in different loads and its control. Starting from the establishment of a mathematical-econometric model that allows the supercapacitor characteristics’ optimization and of a basic electrical equivalent model, the paper presents the realization of a new complex, adaptive model of a supercapacitor, used as a storage device and power supply, taking into account temperature influences on key parameters, the effect of high frequencies on the capacitance and the effects of aging based on application-specific usage. Based on thorough analysis of the classic measurements that are made in pre-choosing a type of supercapacitor to perform the function of an energy source in a system and taking into account all the above factors that may influence the behavior of a supercapacitor, the new electrical equivalent, conceptually model is tested and validated by successive simulations using dedicated software. The model is stable during the simulation and the size of the error to the measured value does not exceed 2.1% of nominal voltage. The solution is even more important as the power supply system must ensure continuity all operating conditions.
Authors and Affiliations
Elena DĂNILĂ, Dorin Dumitru LUCACHE, Gheorghe LIVINŢ
Keywords
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