Advanced M-Dab-Based Ac/Dc Charger With Optimized Conduction Loss And Hybrid Charge–Discharge Strategy For Electric Vehicles
Abstract
The rapid growth of electric vehicles (EVs) demands charging infrastructures that offer both high efficiency and reliability while addressing grid integration challenges. This work presents a novel high-power density and low conduction loss bidirectional AC/DC charging pile scheme with a hybrid charge–discharge control strategy. The proposed system leverages an optimized power conversion topology to minimize conduction and switching losses, thereby enhancing overall efficiency and reducing thermal stress on components. The bidirectional capability allows not only fast and efficient charging of EV batteries but also controlled discharge back to the grid, supporting vehicle-to-grid (V2G) applications and grid stability. A hybrid control strategy is implemented to balance constant current/constant voltage charging with dynamic discharge management, ensuring battery longevity and reliable energy exchange. Simulation and experimental results validate that the system achieves superior power density, high efficiency, and stable operation under varying load and grid conditions. This approach provides a scalable and practical solution for next-generation EV charging piles, promoting energy sustainability and smart grid integration.
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References
H. Zhang, X. Guo, C. Du, and R. Wang, “A novel high-power density and low conduction loss bidirectional AC/DC charging pile scheme with hybrid charge–discharge control strategy,” [Conference/Journal], 2023.
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