基于新型控制原理的单相PFC模块设计  

A Design of Single Phase PFC Model Based on Novel Principle

作　　者：唐小琦[1] 罗春槐[1] 罗涛[1] 刘世峰[1] 

机构地区：[1]华中科技大学国家数控系统工程技术研究中心,430074

出　　处：《电气应用》2007年第4期61-63,72,共4页Electrotechnical Application

摘　　要：介绍一种新型更加简单的PFC控制原理,可以实现简化控制,达到降低控制成本,方便工程应用的目的。新型控制原理基于电压跟随器原理,建立在更简洁的数学模型之上,使电流在开关管的每一周期内都跟踪电压,实现功率因数校正。同时基于本原理设计制作出一台样机,给出相应的参数设计过程,并进行试验。通过试验结果分析,表明这种新型控制原理具有良好控制效果,不仅实现了高功率因数低谐波的要求,还简化了电路,降低了成本,更适合工程应用。A novel principle of PFC control is introduced, which is much simple, low cost and easy for using. The novel principle based on voltage follower, its math model is much simple. The principle makes the current following the voltage in each switch cycle. Then a PFC model is designed based on this principle, its operation process and power factor correction principle are discussed and analyzed in details. Experimental results on a 500W single-phase PFC converter show the effectiveness of the proposed principle, which achieves high power factor and low current harmonic.

关 键 词：电压跟随器 功率因数 校正 

分 类 号：TM46[电气工程—电器]