CASPIAN JOURNAL

MANAGEMENT AND HIGH TECHNOLOGIES

SUPERCAPACITORS MODELING AND SIMULATION IN MATLAB/SIMULINK: STUDYING THE INFLUENCE OF MODEL ELEMENTS ON THE DURATION OF SELF-DISCHARGE

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Salami Akim AdekunlГ©, Ajavon AyitГ© SГ©nah Akoda, Kodjo Koffi Mawugno, Bedja Koffi-Sa SUPERCAPACITORS MODELING AND SIMULATION IN MATLAB/SIMULINK: STUDYING THE INFLUENCE OF MODEL ELEMENTS ON THE DURATION OF SELF-DISCHARGE // Caspian journal : management and high technologies. — 2016. — №3. — pp. 42-58.

Salami Akim AdekunlГ© - Lecturer, University of Lome (MaГ®tre-Assistant, UniversitГ© de LomГ©), BP 1515 LomГ© (TOGO)

Ajavon AyitГ© SГ©nah Akoda - Senior Lecturer, University of Lome (MaГ®tre-Assistant, UniversitГ© de LomГ©), BP 1515 LomГ© (TOGO)

Kodjo Koffi Mawugno - Lecturer, University of Lome (MaГ®tre-Assistant, UniversitГ© de LomГ©), BP 1515 LomГ© (TOGO)

Bedja Koffi-Sa - Professor, University of Lome (MaГ®tre-Assistant, UniversitГ© de LomГ©), BP 1515 LomГ© (TOGO)

Supercapacitors have appeared as new components intended to help batteries in applications where power consumption peaks is observed including power supply of computer equipment. Unfortunately, supercapacitors have tendency to self-discharge, and this limits their practical use. This paper focuses on the study of the supercapacitors behavior within the self-discharge phenomenon and especially the increasing of its duration by acting on the key parameters involved in modeling: their R leakage resistance and electric double layer capacity C . This brings us to the implementation of the MATHLAB/Simulink software with elements of the R-C model involved in self-discharge process. To support this study, experiments were performed to validate the computer (simulation) models. Good agreements have been shown between the experimental and simulation results. Our results of simulation show that an increase in supercapacitors duration of self-discharge implies such requirements: high leakage resistance; low permittivity of the electrolyte; small activated surface; relatively thick electrical double layer; charging voltage below the nominal voltage. The results, which have been received by authors, are encouraging and point to a very promising future for supercapacitors in applications during energy storage over long periods requiring power consumption peaks.

Key words: supercapacitors, modeling, simulation, duration of self-discharge, leakage current, stern capacitor, MATLAB/Simulink, computer technique, суперконденсаторы, моделирование, симуляция, саморазряд, MATLAB, Simulink, ток утечки, конденсатор Стерна, MATLAB/Sim