Abstract
Supercapacitors are energy storage devices with high electrical power densities and long spanlife. Therefore, supercapacitor-based energy storage systems have been employed for a variety of applications. The modelling and simulation of SCs have been of great interest to this objective. This paper presents an electrical schema and mathematical modelling of three models of supercapacitors. The first is the RC model, the second is the two-branch model and the third is the multi-branch model. The objective of this modelling is to choose the best model that can respect the same behaviour of the experimental model. These models are compared with an experimental model. This comparison prove that the response voltage of the multi-branch model correctly describes the behaviour of the experimental model of Belhachemi. The disadvantage of this model is the slow simulation duration in MATLAB/Simulink. The RC model represented the faster model in terms of simulation. The choice of 15 branches in parallel in multi-branch models gives good results and correctly describes the reel model. The automatic charge and discharge voltage of SCs reduce by reducing the charge current.
Highlights
Research on the development of high-performance technologies and power devices has been extensively pursued by many researchers in recent years due to the global energy crisis and deteriorating pollution [1,2]
The RC model represented the faster model in terms of simulation
Constructor, two-branch and multi-branch models) by comparing the results obtained by constructor, two-branch and multi-branch models) by comparing the results obtained by these models to those obtained experimentally by [36]
Summary
Research on the development of high-performance technologies and power devices has been extensively pursued by many researchers in recent years due to the global energy crisis and deteriorating pollution [1,2]. The charge/ discharge cycles of SCs can exceed 100,000 cycles for short durations between 1 and 10 s under high currents that exceed a few hundreds of amps [12,13,14,15] Due to this property, they have various applications such as in smart grids [15,16], electric vehicles, hybrid electric vehicles [17,18,19,20,21], uninterruptible power supplies [22,23] and wireless sensor networks [24,25]. SCs are used for fast frequency support from hybrid wind power plants [26] From this perspective, much effort has been devoted to the appropriate design and the creation of new SC models with high energy densities [27,28,29]. Some systems need a variable voltage ranging between tens and hundreds of volts
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