基于平均电流控制的升压式PFC研究  

Research on Boost PFC Based on Average Current Control

作　　者：高俊岭[1] 张东 李登魁 阚聪 GAO Jun-ling;ZHANG Dong;LI Deng-kui;KAN Cong(School of Electrical and Information Engineering,Anhui University of Technology,Anhui Huainan 232001,China)

机构地区：[1]安徽理工大学电气与信息工程学院,安徽淮南232001

出　　处：《重庆工商大学学报（自然科学版）》2020年第4期9-13,共5页Journal of Chongqing Technology and Business University:Natural Science Edition

基　　金：国家自然基金项目资助(U1610120).

摘　　要：Boost功率因数校正(Power Factor Conection,PFC)变换器广泛存在于各种开关电源当中以提高对电能的利用率,为进一步优化BoostPFC变换器的性能,在平均电流控制方式的基础上加入了占空比前馈控制环节;首先介绍了Boost PFC变换器的工作原理以及平均电流控制方式的控制原理,然后对电感与输出电容的计算作出分析,再在MATLAB/SIMULINK中搭建加入占空比前馈控制后的电路模型并进行仿真实验,最后对仿真结果进行分析;结果表明:加入占空比前馈控制后系统的功率因数有所提高,在一定程度上降低了输入电流的总谐波畸变率,且增加了系统的稳定性。Boost power factor correction(PFC)converters are widely used in various switching power supply to improve the utilization of power.In order to further optimize the performance of Boost PFC converters,duty cycle feedforward control is added on the basis of average current control mode.Firstly,the working principle of Boost PFC converter and the control principle of average current control mode are introduced.Then the calculation of inductance and output capacitance is analyzed.Then the circuit model with duty cycle feedforward control is built in MATLAB/SIMULINK and the simulation experiment is carried out.Finally,the simulation results are analyzed.The results show that the power factor of the system is improved by adding duty ratio feedforward control,which reduces the total harmonic distortion rate of the input current to a certain extent,and which increases the stability of the system.

关 键 词：功率因数校正 平均电流控制 占空比前馈 MATLAB/SIMULINK仿真 

分 类 号：TM46[电气工程—电器]