摘要
为了提高较大功率交流-直流电力变换电路的功率因数、减少谐波总畸变率,通过功率因数校正原理及方法的分析,利用双闭环控制原理设计了一种有源功率因数校正方案。实验结果表明前级APFC环节输出电压纹波大大降低,输入电流交越失真大为改善,功率因数达到0 99以上。
In order to improve the power factor in AC/DC inverter circuit with high power,reduce its total harmonic distortion,a programme for the implementation of controlled circuit of the Boost active power factor corrector has been designed in this paper based on the principle of the controlled double-close-circuit and the correcting method for power factor.The results show that both output ripple voltage and distortion of input current crossover in this circuit reduce greatly,and the power factor is above 0.99.
出处
《青海大学学报（自然科学版）》
2004年第6期61-64,共4页
Journal of Qinghai University(Natural Science)
关键词
功率因数
谐波总畸变率
平均电流控制
有源功率因数校正
power factor
total harmonic distortion
average current control
active power factor control(APFC)
