Advanced Power Management and Control for EV Charging Using Magnetically Linked Converters with AC-DC Load Balancing and Grid-Connected Solar, Wind, and Battery Integration

This paper presents an advanced power management system for electric vehicle (EV) charging applications, integrating a magnetically linked power converter with grid-connected renewable energy sources like solar photovoltaic (PV), wind, and battery storage. The system aims to provide a reliable power supply with efficient AC and DC load balancing, supporting sustainable EV charging infrastructure. The solar PV array is connected to a DC-DC boost converter equipped with the Incremental Conductance (INC) maximum power point tracking (MPPT) algorithm, ensuring maximum power extraction under varying environmental conditions. Wind energy is harvested using an AC-to-DC rectifier with an MPPT technique, optimizing power conversion from the variable wind resource. Battery charging and discharging operations are controlled through a bidirectional DC-DC buck-boost converter, enabling flexible energy storage management and smooth power flow between sources and loads. The magnetically linked power converter plays a crucial role in this system due to its inherent advantages, such as flexible control, high efficiency in power transmission, and galvanic isolation. The system's design ensures soft-switching capability, high-density power transmission, and galvanic isolation, enabling efficient power management, reliable load sharing, and improved overall system performance under fluctuating renewable generation and load conditions.