新型高功率因数校正电路分析及设计

DESIGN AND ANALYSIS OF THE NOVEL POWER FACTOR CORRECTION CIRCUIT

分析了一种采用Ｂｏｏｓｔ拓朴结构进行功率因数校正的电路，给出了控制电路的原理及参数设计方法，结果表明，电路的输入电流跟踪输入电压的变化，功率因数校正特性不受网侧电压波形变化的影响．选择开关损耗较小的开关器件，在开关频率较高的情况下，基本可以实现功率因数为１的校正效果．

? The single-phase Boost circuit is studied for the power factor correction.The operation principle and design of the circuit parameter is presented.It is verified by experiment.The conclusion confirm that input current wave of the circuit follow the wave of input voltage and characteristic of powerfactor correction is not sensitively about the change of input wave.The circuit achiever cosΦ=1 if switchloss is lower and switch frequney is highter.