The different approach for supercapacitor modelling in the perspective of self-discharge study

Abstract

Supercapacitor is a relatively new type of electric component used to store energy compared to a battery. Supercapacitor charge and discharge cycle are faster compared to the battery along with higher power density which increase its application in recent years. However, supercapacitors have quite high self-discharge compared to batteries. This makes energy stored in supercapacitor decrease faster over time when not in use. Various study has been done towards the self-discharge behavior of SC which is both experimentally and in simulation. The simulation is done by various methods and models which have been proposed by previous researchers. Most of the methods that have been used were based on the Equivalent Circuit Model as it is the easiest method available. However, there is still another method proposed such as the Fractional-order model. This paper will review some of the methods and models used to study self-discharge behavior.

Supercapacitor’s Parameter Calculation based on Three Branch Equivalent Circuit Model under Different Constant Charging Current

“…The equivalent circuit model of a supercapacitor contain the fundamental electrical component such as the resistor and the capacitor which either can exist as a single component or multiple component which is either connected in series or parallel [12]. The examples of the equivalent circuit model are the two-branch equivalent circuit model, three branch equivalent circuit model, ladder model, transmission line model, multi-branch model and dynamic model [13]. Different equivalent circuit models resulting in different numbers of parameter available that needed to be extract through various type of experiment.…”