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.
出处
《中国电机工程学报》
EI
CSCD
北大核心
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)~~
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
power factor correction（PFC）
one-cycle control（OCC）
single-edge modulation
bi-edge modulation
low-frequency odd harmonics
