一种新型单级PFC变换器的研究

提出了一种新型单级功率因数校正变换器的电路拓扑,分析了其工作原理。通过一台输出容量为600W的实验装置,研究了该电路拓扑的输入、输出性能指标。实验结果表明,应用该电路拓扑的实验装置,其功率因数较高,输入电流的总谐波畸变较低,输出电压纹波小,而且整个装置的效率也比较高。

Research on A Novel Single-stage PFC Converter

This paper introduces a novel topology about single-stage PFC converter and analyzes its principle of operation.Because both input inductor L1 and output inductor L2 in proposed converter operate in continuous current mode (CCM),the duty-cycles of two switch device are identical basically,the input power value will be changed with load variation and no high DC voltage on capacitor C1 will be ocurred during light load.With a prototype,which output capacity is 600 W,the paper explaines the input and output performance about this topology.Experiment result showed,the topology can make the device get to high Power Factor(PF),low Total Harmonic Distortion(THD)of input current,low ripple of output voltage, and high efficiency.