单周期控制PFC变换器的输入电流畸变研究  

Distortion Issue on Input Current of OCC-PFC Converter and Its Solution

作　　者：江涛[1] 毛鹏[1] 谢少军[1] 

机构地区：[1]南京航空航天大学自动化学院,江苏省南京市210016

出　　处：《中国电机工程学报》2011年第12期51-56,共6页Proceedings of the CSEE

基　　金：高等学校博士学科点专项科研基金资助项目(20070287009)~~

摘　　要：分析单周期控制单相功率因数校正(power factor correction,PFC)电路中传统单边调制方式对输入电流波形的影响,揭示输入电流中低频奇次谐波与调制方式之间的关系。在此基础上,提出以三角波作为载波的双边调制方法,使得开关周期内电感电流上升与下降的过程都得到控制,从而摒除了单边调制带来的输入电流低频奇次谐波,提高了电流质量。仿真和实验结果证明了理论分析的正确性,验证了双边调制单周期控制功率因数校正的可行性。The influence on input current harmonics by single-edge modulation of conventional one-cycle control in single-phase PFC converters was analyzed.The relation between low-frequency odd harmonics of the inductance current and modulation scheme was revealed.Based on the analyses,bi-edge modulation with triangular-wave as carrier was proposed.The inductance current is modulated both at leading-and trailing-edge in a switching cycle.Consequently,the low-frequency odd harmonics of inductance current is reduced,and the quality of the input current is improved.The validity of the theoretical analysis and feasibility of the bi-edge modulation one-cycle control scheme are verified by simulation and experiment results.

关 键 词：功率因数校正 单周期控制 单边调制 双边调制 低频奇次谐波 

分 类 号：TM46[电气工程—电器]