摘要
提出了一种Boost型功率因数校正(PFC)电路变频控制的实现方法。利用V I变换和积分电路计算功率开关管的关断时间,保证电感始终处于临界导电模式,可获得接近1的功率因数。电路中无需模拟乘法器和电流检测环路,仅用电压单环反馈控制即可。
A simple way to realize frequency conversion of the Boost Power Factor Correction circuit is proposed.Based on the voltage-current conversion and integral circuit,the turn-off time of the power switch can be calculated and the critical conduction mode of the inductor can be guaranteed, and nearly unit power factor also can be got. Controlled with single voltage feed back loop, both multiplier and current detected loop can be dispensed within this circuit.
出处
《电力电子技术》
CSCD
北大核心
2004年第1期30-32,共3页
Power Electronics
关键词
功率因数
电压控制
积分电路/变频控制
power factor
voltage control
integral circuit/frequency-variablel control
