基于DSP控制的PFC变换器的新颖采样算法  

A Novel Sampling Control Algorithm for PFC Converter Based on DSP

作　　者：张恩利[1] 彭冬梅[1] 侯振义[1] 余侃民[1] 

机构地区：[1]空军工程大学电讯工程学院,陕西西安710077

出　　处：《电源技术应用》2004年第9期533-537,共5页Power Supply Technologles and Applications

摘　　要：为 DSP 控制的功率因数校正(PFC)变换器提出了一种新颖的采样算法,它能够很好地消除PFC 电路中高频开关动作产生的振荡对数字采样的影响。尤其是当开关频率高于30kHz 时,所提出的新颖采样算法能够更好地提高开关抗噪声性能。最后将此算法运用到一台2 kW 的 PFC 变换器中,实验结果证明了该算法对于分析、设计和调试所有含开关的数字采样电路均有实用参考价值。A novel sampling control algorithm for power factor correction(PFC)converters based on DSP is presented, which successfully avoids the influences of the oscillation brought by the operational high-frequency switching.The proposed sampling algorithm can greatly improve the switching noise immunity,especially when the switching frequency is above 30kHz.A 2kW PFC converter based on the proposed sampling algorithm is implemented at last,and the experimental results prove the practicality of the proposed novel sampling algorithm in analysis,design and debugging of all digital sampling circuits with switching.

关 键 词：变换器 PFC电路 算法 采样电路 开关频率 抗噪声性能 功率因数校正 DSP控制 振荡 高频开关 

分 类 号：TM46[电气工程—电器] TN624[电子电信—电路与系统]