摘要
介绍了一种基于SEPIC的功率因数校正电路的工作原理,给出了输入电流和二倍线频纹波电压的详细推导过程,分析了占空比大小对于输入电流畸变的影响,给出了主电路和电压补偿器的设计原则。
The operation principle of a power factor correction circuit based on SFPIC is mtroduced. The detailed derivation of input current and donble-line frequency output voltage ripplc are presented. The influence of cyelc duty on THD to input current is analysed and the design criteria for power stage and voltage compeusator are also presented. Parameters of a SEPIC-PFC circuit based on these criteria are given. The introduced theory analysises and desigus are verified by simulations.
出处
《电源技术应用》
2003年第11期29-33,共5页
Power Supply Technologles and Applications
