采用电流近似法多级交错模拟APFC的研究  

Research on Multi-channel Interleaved Analog APFC Using Current Approximation Method

作　　者：李华武[1] 马红星[1] 郑海博[1] 杨喜军[1] 

机构地区：[1]电力传输与功率变换控制教育部重点实验室,上海交通大学,电气工程系,上海200240

出　　处：《电力电子技术》2013年第1期86-88,共3页Power Electronics

基　　金：科学技术部科技人员服务企业行动项目(2009GJC00039)~~

摘　　要：对于单相有源功率因数校正器(APFC)应用场合,当对输入电流纹波要求较高以及期望输出功率较大时,其功率电路需要采用多级交错结构。在分析升压电感电流平均值可由IGBT电流平均值近似代替的基础上,给出了单级APFC的双闭环控制原理,并将其引用到三级以及六级交错APFC中。在利用Matlab/Simulink进行了较为全面的仿真分析后,采用最新推出的三级交错APFC模拟控制器FANxxxx初样,设计和实现了最大输出功率6 kW的三级交错APFC。开关频率为35 kHz,电感量为350μH。实验结果表明,采用电感电流近似法,也可以实现高性能和低成本的多级交错APFC。In single-phase active power factor corrector（APFC） applications,the power circuit needs to utilize multichannel interleaved construct when the requirement of input current ripple is high and the expected output power is large.On the basis of analyzing that mean value of IGBT current can instead of the mean value of Boost inductor current approximately,this paper gives the double close loops control theory of single-channel APFC,and uses it in three-channel and six-channel interleaved APFC.Then after making simulation analysis by using Matlab/Simulink in the general,the three-channel interleaved APFC whose largest output power is 6 kW is designed and realized by employing the latest three-channel interleaved APFC analog controller FANxxxx prototype sample.The switching frequency is 35 kHz and the inductor is 350μH.The result shows that using inductor current approximation method can also realize multi-channel interleaved APFC with good performance and low cost.

关 键 词：功率因数校正 多级交错 双闭环控制 

分 类 号：TM714.3[电气工程—电力系统及自动化]