AI 中文总结
该研究提出一种集成有源功率解耦的双模电动汽车车载充电机，可兼容三相与单相电源，通过仅增加一个继电器和小电容实现解耦，使单相运行时直流母线电容大幅降低。
AI 中文摘要
车载充电机（OBC）是电动汽车（EV）的关键部件。高性能电动汽车更倾向于采用三相充电以实现更高功率等级，但同时也需要具备从单相电源充电的能力。本文提出一种适用于电动汽车的双模车载充电机，可在三相电源与单相电源下运行。单相充电时，由于直流母线存在二倍频电流，需要采用体积庞大的直流母线电容；所提拓扑仅通过额外一个继电器开关和一个小电容实现有源功率解耦（APD），消除了这一需求。通过详细仿真在不同条件下验证了所提拓扑，结果表明单相运行时直流母线电容减少了一个数量级以上。
英文摘要
Onboard charger (OBC) is essential part of Electric Vehicle (EV). High-performance EVs are preferring three phase charging to achieve higher power level. However, the ability to charge from a single phase supply is also required. A dualmode OBC for EVs is proposed, which is capable of operating from both three-phase supply and single-phase supply. The single phase charging comes with the requirement of bulky DC link capacitance due to double frequency current in DC link. The proposed topology eliminates this by achieving Active Power Decoupling (APD) using only one additional relay switch and a small capacitor. The proposed topology is verified under different conditions in a detailed simulation, which shows more than an order of magnitude reduction in DC link capacitance during single phase operation.
