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