电动汽车车载充电机AC/DC环节的PFC控制技术  

Power Factor Correction Control Technology of AC/DC Link of Electric Vehicle On-board Charger

作　　者：杨章林[1] 贾会星[1] YANG Zhanglin;JIA Huixing(School of Automotive Engineering,Chuzhou Polytechnic,Chuzhou,Anhui 239000,China)

机构地区：[1]滁州职业技术学院汽车工程系,安徽滁州239000

出　　处：《湖南城市学院学报（自然科学版）》2020年第3期57-61,共5页Journal of Hunan City University:Natural Science

基　　金：安徽省高等学校自然科学研究项目(KJ2018A0836)。

摘　　要：研究电动汽车车载充电机的主动功率因数校正(Power Factor Correction,PFC)技术。通过脉宽调制控制技术实现电网侧的有源PFC,从而抑制电流谐波对电网产生的污染,避免了电动汽车大规模接入电网时对电网质量的不利影响;采用全通滤波器模拟αβ坐标系下的交流电压矢量,通过坐标变换为dq坐标系下的直流电压矢量,从而将交流信号的控制转化为直流信号的控制,提高了控制精度和闭环系统的动态性能。仿真及实验结果表明,通过PFC技术能够将交流侧电流总谐波畸变率降低至5%以内,极大地减少了车载充电机工作时对电网的污染。The power factor correction(PFC)technology of electric vehicle on-board charger is studied.Pulse width modulation control technology is applied to realize active PFC of the grid side.Thus the pollution of the current harmonic can be inhibited and its adverse effects to the grid can be avoided when electric vehicles are connected to the power grid on a large scale.Allpass filter is applied to analog AC voltage vector in theαβframe,which can be transformed into DC voltage vector through coordinate transformation.Thus the control of AC signals can be transformed into DC signals.The control precision and the dynamic performance of the closed loop system can be improved.The simulation and experimental results show that the PFC technology can reduce the total harmonic distortion of the AC side to less than 5%,which can greatly reduce the pollution to the grid when the on-board charger works.

关 键 词：车载充电机 坐标变换 全通滤波器 功率因数校正 

分 类 号：TM73[电气工程—电力系统及自动化]