摘要
本文以Boost型功率因数校正器（简写为PFC）为例，阐述了其电路的工作原理，用数学方法证明了其电路具有功率因数为1的性质，给出了若干主要波形及占空比的瞬态表达式，证明了其电路采用的是SPWM方式，给出了PFC电路的理想模型，利用这个模型可以得到输出功率、输出电流等的变化规律．本文的结论对于分析、设计、调试PFC电路有一定的实用价值．
The following contributions for active power factor correction circuits (abbr., PFC) have been made in illustration of Boost PFC in this paper: (1)The principle of Boost PFC has been better stated. The characteristics of unit power factor in the circuits have been proved and main wave forms have been given. (2)The formula of duty factor has been provided and the SPWM must be used in this circuit. (3)An ideal model of PF= 1 has been proposed and the formulas of output current and power can be gotten by using the ideal model easily.
出处
《北方工业大学学报》
1998年第1期48-54,共7页
Journal of North China University of Technology
基金
广电部"八五"攻关课题
