Abstract

This paper presents a microgrid energy management system that encompasses a combination of solar panels with maximum power point tracking (MPPT), a battery storage unit connected by a bidirectional converter and a wind turbine. The microgrid is designed to maintain a balance between energy supply and demand under varying weather conditions and loads. The system employs a fuzzy logic controller to regulate the power flow between the loads and sources, ensuring reliable and efficient operation. The microgrid is of the DC type, providing power to both DC and AC loads. The proposed system is designed and implemented using Matlab/Simulink and evaluated using simulation studies. The obtained results show the large extent to which the recommended approach ensures a steady energy supply under different load and weather scenarios, indicating that the proposed microgrid energy management system is a viable and efficient solution for small-scale renewable energy systems.

Key words: Fuzzy logic controller; Microgrid; Energy management; Energy supply reliability; Energy balance; Renewable energy system.