DCM-CRM Boost-Flyback单级PFC变换器  

DCM-CRM Boost-Flyback single-stage PFC converter

作　　者：阎铁生 李明洪[1,2] 陶权保 周国华 曹太强[1,2] 王军 YAN Tiesheng;LI Minghong;TAO Quanbao;ZHOU Guohua;CAO Taiqiang;WANG Jun(School of Electrical Engineering and Electronic Information,Xihua University,Chengdu 610039,China;Key Laboratory of Fluid and Power Machinery,Ministry of Education,Xihua University,Chengdu 610039,China;School of Electrical Engineering,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]西华大学电气与电子信息学院,四川成都610039 [2]西华大学流体及动力机械教育部重点实验室,四川成都610039 [3]西南交通大学电气工程学院,四川成都610031

出　　处：《电力自动化设备》2019年第11期152-158,共7页Electric Power Automation Equipment

基　　金：国家自然科学基金资助项目(61771405);四川省科技厅应用基础重点项目(2016JY0161);教育部春晖计划项目(Z2017081);四川省教育厅自然科学重点项目(17ZA-0361);西华大学自然科学重点基金资助项目(Z1520906)~~

摘　　要：为了实现功率因数校正(PFC)功能,单级Boost-Flyback变换器的前级Boost变换器通常工作在断续导电模式(DCM),为了实现高效率,通过控制使后级Flyback变换器工作在临界连续导电模式(CRM)。详细分析了变换器的工作原理和功率因数、中间储能电容电压、开关频率等相关工作特性,并搭建了60 W的实验样机,验证了此变换器能够仅使用1个开关管和1个峰值电流模控制器,同时实现PFC功能和恒定输出电压,且相比DCM-DCM,DCM-CRM Boost-Flyback单级PFC变换器在保持相同功率因数的前提下,提高了变换器的效率。In order to realize PFC(Power Factor Correction)function,the pre-stage Boost converter of BoostFlyback single-stage converter usually works at DCM(Discontinuous Conduction Mode).In order to achieve high efficiency,the post-stage Flyback converter of Boost-Flyback single-stage converter is controlled to operate at CRM(CRitical continuous conduction Mode).The operation principle and operation characteristics of the converter including power factor,the voltage of link capacitor,switching frequency are analyzed in detail.A 60 W experimental prototype is built to verify that the PFC function and constant output voltage can be realized at the same time with only one switching transistor and one peak current mode controller.Compared with DCM-DCM operation mode,DCM-CRM Boost-Flyback single-stage PFC converter improves the efficiency with same power factor.

关 键 词：Boost-Flyback 功率因数校正 单级 断续导电模式 临界连续导电模式 峰值电流模式 

分 类 号：TM46[电气工程—电器]