张怡冰,刘其辉.基于虚拟同步机的电动汽车快速充电控制技术[J].电测与仪表,2019,56(10):14-20. Zhang Yibing,Liu Qihui.Virtual Synchronous Machine Based Fast Charger Control TechnologyFor Electric Vehicle Application[J].Electrical Measurement & Instrumentation,2019,56(10):14-20.
基于虚拟同步机的电动汽车快速充电控制技术
Virtual Synchronous Machine Based Fast Charger Control TechnologyFor Electric Vehicle Application
With the development of electric vehicle, fast charger has been paid more and more attention. Electric vehicle power battery needs to be connected through the inverter and the transmission power fluctuates greatly during the process of charging. Although the traditional control strategy is of rapid response, but bad for the safety because of lacking inertia and damping. This paper proposes Virtual Synchronous Machine based faster charger control technology for electric vehicle to solve this problem. It mimics the behavior of a synchronous machine to balance the fluctuation of transmission power as well as meet the requirements of faster charging, and it can enhance the inertia and damping of inverter and improve the power quality. Finally, the fast charger for electric vehicle model is built on MATLAB and the simulation results support the validity and correct of the proposed method.