Modeling, Simulation and Experimental Investigations for Hybridization of Lithium-Ion Battery and Supercapacitor in Electric Vehicle Applications

Abstract

System modeling offers an expedited alternative to testing and evaluation of effects and relationships between input and output variables. Simulation approach helps to analyze the real world problems in safer and efficient way for easily verification and communication purpose. Moreover, it enables large-scale data analysis, which would be financially impractical in a testing scenario. The proposed work investigates the modeling of hybrid energy storage system of lithium-ion battery and EDLC supercapacitor which are connected in passive combination, to evaluate its charging and discharging characteristics as well to investigate integration of both energy storage devices for suitability in eV applications. Further simulation approach is used to evaluate the with circuit model designed MATLAB/Simulink for estimating effects of hybridization on working parameters of HESS like voltage, current and state of charge. The effects of battery model, supercapacitor model and its hybridization model circuit are evaluated for input and output variable’s effects on hybrid system. The results are further validated with the experimental solution to get efficient, economical and reliable solution in the field of electric vehicles applications.