摘要
车载充电机是新能源电动汽车与电网进行能量交互的接口。为了提高充电效率,设计了一台3 kW的两级式车载充电机系统模型,前级采用图腾柱PFC整流器,后级采用DC-DC变换器,对前级整流器电压外环采用二阶模拟陷波滤波器,电流内环采用准比例谐振控制,后级DC-DC采用电压单闭环变频控制。实验结果表明,优化前级控制策略后,能够有效减小网侧电流畸变和输出电压波动。
The on-board charger is the interface for energy interaction between new energy electric vehicles and the power grid.In order to improve the charging efficiency,a two-stage vehicle charger system model of 3 kW is designed.Totem pole PFC rectifier is adopted in the front stage,DC-DC converter is adopted in the rear stage,second-order analog notch filter is adopted in the voltage outer loop of the front rectifier,quasi-proportional resonance control is adopted in the current inner loop,and voltage single closed-loop frequency conversion control is adopted in the rear DC-DC stage.The experimental results show that the current distortion and output voltage fluctuation can be effectively reduced by optimizing the front control strategy.
作者
徐庆普
XU Qingpu(College of Electrical and Information Engineering,Anhui University of Technology,Huainan 232001,China)
出处
《电工技术》
2025年第24期7-10,共4页
Electric Engineering
关键词
陷波滤波器
车载充电
准比例谐振控制
二倍工频纹波
notch filter
car charging
quasi-proportional resonance control
twice the power frequency ripple
