摘要
提出一种新颖的无源缓冲型全桥单级功率因数校正(PFC)技术。该PFC电路的无源缓冲环节由2个电容、2个电感和4个二极管组成,利用缓冲电容吸收变压器漏感引起的初级电压尖峰,通过电容与电感的谐振将缓冲电容能量在一个开关周期内转移给输出负载。详细分析了无源缓冲型全桥单级PFC电路的工作原理,设计了基于UC3854芯片的控制电路,实验结果证明了所提方法的正确性。
A full-bridge single-stage power factor correction （PFC） technique with passive snubber is proposed.The p- assive snubber is composed by two capacitors ,two inductors and four diodes.The capacitors are used to absorb the voltage spike which is inducted by leakage of the transformer.The energy of the capacitor can be transferred to the output load by resonance of the inductor and the capacitor during one switching period.Operational principle of the full-bridge single-stage PFC with passive snubber is analyzed.The control circuit is designed based on the controller UC3854.The experimental results verify the validity of the proposed methods.
出处
《电力电子技术》
CSCD
北大核心
2013年第9期49-51,共3页
Power Electronics
基金
国家自然科学基金资助项目(51107017)
中国博士后科学基金(2012M510954)~~
关键词
功率因数校正
无源缓冲
单级
全桥
power factor correction
passive snubber
single-stage
full-bridge
