新型无源无损Boost APFC电路设计与仿真  

Design and simulation of novel passive lossless Boost APFC circuit

作　　者：于仲安 何俊杰 YU Zhongan;HE Junjie(School of Electrical Engineering and Automation,Jiangxi University of Science and Technology,Ganzhou 341000,China)

机构地区：[1]江西理工大学电气工程与自动化学院,江西赣州341000

出　　处：《现代电子技术》2018年第16期43-46,共4页Modern Electronics Technique

基　　金：江西省教育厅立项课题(GJJ150678)~~

摘　　要：传统的软开关电路能较好地解决Boost有源功率因数校正(APFC)电路中开关管开通与关断时所引起的损耗高、升压二极管关断时反向恢复引起的尖峰电流冲击大的问题;但随之出现的是升压二极管在关断后要承受2倍于输出电压的反向峰值,并且软开关电路元器件应力也较大。提出一种适用于Boost升压电路的无源无损软开关电路,在理论分析软开关电路工作过程的基础上进行仿真实验。结果证明开关管实现了零电流开通和零电压关断所有二极管软开关,并且电路中所有元器件的电压电流应力小,提高了电路的工作效率。The traditional soft.switching circuit can resolve the problems of the high loss at the moment of switch-on and switch-off of the switch tube in the Boost active power factor correction(APFC)circuit,and the large impact of the peak current caused by the reverse recovery at the moment of switch-off of the booster diode.However,the booster diode has to bear a reverse peak being twice of the output voltage at the moment of its switch-off,and the component stress of the soft.switching circuit is relatively large.Therefore,a passive lossless soft-switching circuit suitable for the Boost booster circuit is proposed.On the basis of theoretical analysis of the working process of the soft-switching circuit,a simulation experiment was carried out.The results show that the switch tube can realize zero-current turn-on and zero-voltage turn-off of all diodes′soft-switching,and the small voltage and current stresses of all the components in the circuit,which can improve the working efficiency of the circuit.

关 键 词：软开关电路 无源无损电路 有源功率因数校正 升压电路 BOOST 升压二极管 

分 类 号：TN643.3-34[电子电信—电路与系统] TM743[电气工程—电力系统及自动化]