采用双环控制并联交错模拟PFC的研究  

Research on Paralleled Interleaved Analog PFC Using Double Closed Loop Control

作　　者：江剑峰[1] 曹中圣[1] 杨喜军[1] 雷淮刚[2] 

机构地区：[1]上海交通大学,电气工程系,上海200240 [2]上海大学,自动化系,上海200072

出　　处：《电力电子技术》2011年第9期95-97,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：对于较大输出功率的单相有源功率因数校正器(PFC),其功率电路采用多级并联交错能减少电感容量,简化电感设计,降低网侧纹波电流,从而提高效率和功率密度。这里在单级PFC电压与电流双闭环控制原理和电感电流合成原理基础上,分析了两级并联交错PFC中IGBT占空比与纹波电流的关系,并进行了仿真分析。基于模拟控制器UCC28070设计并实现了额定输出功率为3 kW的两级交错PFC。结果表明,采用双闭环控制、电流合成原理实现高性能和低成本的并联交错PFC是可行的,具有很好的纹波电流抑制效果且性价比高。In application of large output power single-phase active power factor corrector（PFC）,the multi-stage paral-leled power circuit can reduce inductance,simplify inductor design and reduce the main ripple current,so as to im-prove the efficiency and power density.This paper describes the voltage and current closed loop control principle of a single stage PFC and inductor current synthesis,analyzes relationship between duty cycle and ripple current in two-stage interleaved paralleled PFC and then makes a comprehensive simulation analysis.Finally,a two-stage parallele in-terleaved PFC circuit is designed and implemented based on analog control chip UCC28070.The result shows that employing double closed control loop and current synthesis theory to realize high performance and low cost inter-leaved paralleled PFC is feasible while having a good ripple suppression effect and cost effective.

关 键 词：功率因数校正器 双环控制 电流合成 模拟控制 

分 类 号：TM761[电气工程—电力系统及自动化]