Modeling and simulations in symmetrical supercapacitors using time domain mathematical expressions
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Journal of Applied Mathematics and Physics
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This study presents the deduction of time domain mathematical equations to simulate the curve of the charging process of a symmetrical electrochemical supercapacitor with activated carbon electrodes fed by a source of constant electric potential in time ε and the curve of the discharge process through two fixed resistors. The first resistor RCo is a control that aims to prevent sudden variations in the intensity of the electric current i1(t) present at the terminals of the electrochemical supercapacitor at the beginning of the charging process. The second resistor is the internal resistance RA of the ammeter used in the calculation of the intensity of the electric current i1(t) over time in the charging and discharging processes. The mathematical equations generated were based on a 2R(C + kUC(t)) electrical circuit model and allowed to simulate the effects of the potential-dependent capacitance (kUC(t)) on the charge and discharge curves and hence on the calculated values of the fixed capacitance C, the equivalent series resistance (ESR), the equivalent parallel resistance (EPR) and the electrical potential dependent capacitance index k.
Como referenciar
FERNANDEZ, ANTONIO P.R.; PERIGO, ELIO A.; FARIA JUNIOR, RUBENS N. de. Modeling and simulations in symmetrical supercapacitors using time domain mathematical expressions. Journal of Applied Mathematics and Physics, v. 10, n. 10, p. 3083-3100, 2022. DOI: 10.4236/jamp.2022.1010206. Disponível em: http://repositorio.ipen.br/handle/123456789/33422. Acesso em: 30 Dec 2025.
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