RESEARCH AND SIMULATION OF A HYBRID SUPERCAPACITOR-LITHIUM BATTERY ENERGY STORAGE SYSTEM FOR SOLAR ENERGY

Abstract

In a solar power system, solar energy is converted into electrical energy through solar panels. However, solar energy is unstable, and dependent on weather conditions and time of day. Therefore, integrating energy storage systems into solar power systems is very important. Hybrid structures combining supercapacitors and Lithium batteries are considered effective in the field of energy storage. The combination of supercapacitors and Lithium in energy storage aims to harness the advantages of both, including fast charging and discharging capabilities, as well as the high power density of supercapacitors and the high energy storage capacity of Lithium batteries. The objective of this research is to determine the coordinated control strategy of supercapacitors and Lithium-ion batteries in order to highlight the benefits of combining supercapacitors and Lithium-ion batteries in energy storage systems through modeling and simulation. Control loops and power circuits are calculated and verified using Matlab Simulink software. The simulation results demonstrate that the control strategy meets the specified requirements for the response.