单级功率因数校正(PFC)研究的新进展  

New Progress of Single-stage Power Factor Correction (PFC) Converter

作　　者：李意[1] 尹华杰[1] 

机构地区：[1]华南理工大学电力学院雅达实验室,广东广州510640

出　　处：《电源技术应用》2003年第5期211-214,共4页Power Supply Technologles and Applications

摘　　要：传统两级功率因数校正(PFC)电路复杂、器件多、功率密度低,效率不是很理想,且成本高,难以应用到小功率消费类电子设备中而单级式PFC变换器则特别适用于小功率电子设备,但仍存在许多问题针对这些问题,人们提出了很多新的改进拓扑为此,对最近产生的单级PFC拓扑进行了分类总结,分析了他们的优缺点。Because of ths complex circuit, number of devices, low power density, relatively low efficiency and high cost, convent(?)(?)nal two-stage PEC cireuits ca(?)ot be used widely in low power cousumer electronic eqiupments. While the sin-gle-stage PFC can satisfy can saltsfy that goal very well. However, single-stage PFCs still have a lot of shortcomings so that many new topologic improvement on single-stage PFC eireurts are presented. The several new topologies for single-stage PFC circuits are introduced, also their advantages and disadvantages arc pointed out. At last, a prediction about the development of the single-stage PFC is given.

关 键 词：单级功率因数校正 单级式PFC变换器 功率变换器 拓扑结构 电子设备 PFC电路 

分 类 号：TN624[电子电信—电路与系统]