一种谐波优化的APFC电路分析  

Analysis of a Harmonic Optimization APFC Circuit

作　　者：李伟锋[1] 朱菁 纪志刚 陈鹏 LI Weifeng;ZHU Jing;JI Zhigang;CHEN Peng(School of Electronic Information,Zhongyuan University of Technology,Zhengzhou 451191,Henan,China)

机构地区：[1]中原工学院电子信息学院,河南郑州451191

出　　处：《电气传动》2018年第4期29-32,共4页Electric Drive

基　　金：河南省重点科技攻关项目(152102210155)

摘　　要：为了解决传统平均电流控制策略使APFC电路网侧电流含有大量的低次谐波分量,导致输入电流存在较大失真,使系统的功率因数大幅降低的问题,提出了一种3次谐波补偿策略。基于电路中谐波产生机理,阐述了APFC电路的工作原理。根据调节注入3次谐波电流的幅值与相位,获得最佳抑制谐波效果。最后通过Matlab/Simulink仿真并搭建硬件平台。实验结果表明:采用该策略能够有效消除低次谐波,进一步提高网侧的功率因数,具有较好实用性。In order to solve the problem that the traditional average current control strategy can make the APFC circuit side current contain a large number of low-order harmonic components,result in large input current distortion and the system power factor reduced significantly,a third harmonic compensation strategy was proposed.Based on the mechanism of harmonic generation in the circuit,the working principle of APFC circuit was expounded.To get the best suppression of harmonic effects,the size of the injection harmonic currents was adjusted.Finally,Matlab/Simulink was used to simulate the system and the hardware platform was built.The results show that this strategy can effectively eliminate harmonics,and further improve the power factor of grid side,it has promoted value.

关 键 词：有源功率因数校正 平均电流控制法 电流畸变率 3次谐波补偿策略 

分 类 号：TM714.3[电气工程—电力系统及自动化]