摘要
改善通信电源输入电流的谐波和功率因数不仅可以减少对供电系统的污染、提高电源总体效率,同时有利于提高输出电压质量。采用功率因数校正技术可以有效抑制输入电流谐波、提高功率因数,但要求开关管具有较高的开关频率,因此只能应用在一些小功率场合。采用移相调制的多重斩波电路,可以提高等效开关频率,因此可应用在中大功率场合。文章介绍了一种具有功率因数校正的多重斩波电路的控制方法,该方法通过载波移相方式来提高等效开关频率,给出了仿真验证结果。
Improving input current harmonic and power factor of communication power can not only reduce the pollution of power supply system,improve the overall efficiency of power supply,but also can improve the quality of output voltage.Using the power factor correction technique can dffectively restrain input current harmonic,improve power factor.Because its requirement of high switch frequency,it can only be used in small power occasion.With the shift-phase modulated multiple chopper circuit,the equivalent switch frequency can be improved,so it can be used in large power occasion.This paper introduces a kind of multiple chopper circuit control method with power factor,this method can improve the equivalent switch frequency through carrier phase-shift control.The simulation results are verified.
出处
《通信电源技术》
2010年第6期46-48,共3页
Telecom Power Technology
关键词
通信电源
多重斩波电路
载波移相控制
communication power supply
multiple chopper circuit
carrier phase-shift control
