虚拟同步机技术在电动汽车充电桩中的应用

The Application of Virtual Synchronous Generator Technology in Electric Vehicle Charging Pile

文章研究将虚拟同步机技术应用在电动汽车充电桩的三相可控整流器中,使电动汽车具备虚拟的惯性、阻尼和同步机制,自动参与电网稳定运行的调节,并通过模型研究和实验分析验证该技术的优越性和可行性。应用虚拟同步机技术的电动汽车充电桩将电网运行状态作为反馈,能够根据电网电压、频率变化快速进行调整,实现有功、无功功率的自主交互,对功率振荡起到有效的抑制作用。该技术的应用能够在最大程度上降低大规模电动汽车接入对电网稳定性的影响,实现电动汽车与电网的互动,并能够有效解决智能化电力系统中系统惯性缺失的问题。

In this paper,the virtual synchronous generator technology is applied to the three-phase controlled rectifier of electric vehicle charging pile,which makes the electric vehicle have virtual inertia,damping and synchronization mechanism.It automatically participates in the regulation of stable operation of the power grid,and the feasibility and superiority of this technology is verified by model research and experimental analysis. The electric vehicle charging pile using the virtual synchronous generator technology takes the grid operating status as feedback. It can quickly adjust according to the change of voltage and frequency. The autonomous interaction of active and reactive power is realized and the power oscillation is effectively suppressed. The impact of large-scale electric vehicle access on grid stability can be minimized by the application of this technology. The interaction between electric vehicle and power grid can be realized. The problem of system inertia loss in intelligent power system can also be effectively solved.