Design of Multi-port Energy Conversion System of Electric Vehicle Based on Bridge-Type Buck-Boost Topology

Aiming at the improvement of electric vehicle endurance and its role in the future smart grid construction, this paper proposes a multi-port energy conversion system of electric vehicle based on bridge-type Buck-Boost topology. The energy conversion system consists of an on-board photovoltaic charging circuit, an energy conversion circuit implementing energy exchange between electric vehicles, and an energy conversion circuit implementing energy exchange between grid and electric vehicle. Bridge-type Buck-Boost circuit is adopted between each port, so as to realize the energy conversion of electric vehicle. The feasibility and superiority of the system are verified by experiments.