Operational Three-Mode (3M) Algorithm for a Bi-Directional PEV Charger in G2V, V2H, and V2G Applications

• Published in: 2025 13th International Electrical Engineering Congress (iEECON) pp. 1 - 5
• Main Authors: Rojchaya, Sittisak, Jindapetch, Nattha, Sengchuai, Kiattisak
• Format: Conference Proceeding
• Language: English
• Published: IEEE 05.03.2025
• Subjects: Batteries; bi-directional charger; Bidirectional control; grid-to-vehicle (G2V); Rectifiers; Road transportation; Smart homes; Topology; Uninterruptible power systems; Vehicle-to-grid; vehicle-to-grid (V2G); vehicle-to-home (V2H); Voltage control
• DOI: 10.1109/iEECON64081.2025.10987629

Electric vehicles (EVs) are widely recognized as one of the most effective strategies for reducing oil consumption and greenhouse gas emissions, establishing them as a key option for the future of road transportation. The widespread adoption of EVs is expected to have a profound societal impact, influencing various aspects of human life. A key advantage of EVs is their battery module, which offers a higher capacity compared to other devices. This high-capacity battery can also function as an energy storage system (ESS) for homes when connected to a charger. This paper presents the operational modes of a single-phase bi-directional plug-in electric vehicle (PEV) charger designed for G2V/V2H/V2G applications. The proposed system employs a bi-directional converter to facilitate two-way power flow between the home and the vehicle. The topology includes two stages: 1) a synchronous DC-DC converter and 2) a full-bridge AC-DC converter. The system operates in three modes: battery charging, energy backup, and grid-connected modes. Designed for a 7.7 kVA single-phase onboard charger, the system's feasibility is verified through simulations.