Design and Implementation of a High-Efficiency 12V Dual Power Supply System for Electric Vehicle Battery Charging Applications
Stephen Eduku1, Joseph Sekyi-Ansah2
1Dr. Stephen Eduku, Department of Nautical Studies, Faculty of Engineering, Takoradi Technical University, Takoradi, Ghana.
2Dr. Joseph Sekyi-Ansah, Department of Oil and Natural Gas Engineering, Faculty of Engineering, Takoradi Technical University, Takoradi, Ghana.
Manuscript received on 01 September 2025 | First Revised Manuscript received on 06 October 2025 | Second Revised Manuscript received on 11 October 2025 | Manuscript Accepted on 15 October 2025 | Manuscript published on 30 October 2025 | PP: 1-7 | Volume-14 Issue-11, October 2025 | Retrieval Number: 100.1/ijitee.J1146140100925 | DOI: 10.35940/ijitee.J1146.14111025
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Abstract: The rapid demand for efficient and reliable battery charging solutions for electric vehicles (EVs) has unveiled the limitations of conventional single-source chargers. To address these challenges, this research paper presents the design and implementation of a 12V dual power supply battery charger system capable of operating from both AC mains (grid) and renewable DC sources such as solar photovoltaic (PV) systems. The proposed system (charger) integrates a highly efficient power conversion stage with intelligent charge control to ensure fast, safe, and cost-effective charging. Automated source selection and discontinuous-mode soft switching are employed to improve flexibility, minimize switching losses, and reduce thermal stress. A prototype was designed and simulated using Circuit Wizard software, programmed in C++, and experimentally tested. However, results confirm stable operation with a constant 12V output from both grid and solar inputs, demonstrating enhanced efficiency and reliability. The proposed charger offers a sustainable and versatile solution suitable for domestic, commercial, and industrial energy storage applications.
Keywords: Battery Charger Design, Energy-Efficient Charging Systems, Dual Power Supply, Grid and Solar Photovoltaic Integration, Automated Source Selection Mode, Electric Vehicle.
Scope of the Article: Electrical and Electronics