一种双管隔离型变换器的分析与设计  

Analysis and Design of a Dual-switch Isolated Converter

作　　者：王翠红[1] 刘金华 杨庆凤[1] WANG Cuihong;LIU Jinhua;YANG Qingfeng(School of Electrical Engineering,Jinling Institute of Technology,Nanjing 211169,Jiangsu,China;Logistics Management Department,Jinling Institute of Technology,Nanjing 211169,Jiangsu,China)

机构地区：[1]金陵科技学院机电工程学院,江苏南京211169 [2]金陵科技学院后勤管理处,江苏南京211169

出　　处：《电气传动》2019年第6期38-42,共5页Electric Drive

基　　金：江苏省高校品牌专业建设工程资助项目(TAPP);江苏省高校后勤协会能源管理专业委员会专项课题(JSSNZH2016213)

摘　　要：针对传统双管正激变换器存在的滤波单元体积大、整流二极管反向恢复和电压振荡问题,提出一种新型的双管变换电路。该变换器输出滤波电路只保留1个电容滤波,一方面减少了磁性元件的使用,使得滤波电路的功率密度提高;另一方面解决了整流二极管的寄生振荡、反向恢复的问题。同时,分析了该变换器在理想情况下的工作原理和特性。最后,根据所提出的双管变换器,在实验室中制作了1台200W的原理样机,实验结果证明了理论分析的正确性。The traditional dual switch forward converter has a very large filter circuit,and its output rectifier diode has the problem of reverse recovery and voltage oscillation. Therefore,a novel dual switch DC/DC converter was proposed with only one capacitor as the output filter,which the number of magnetic elements was reduced and power density was improved. Besides,the problems of parasitic oscillation and reverse recovery of the rectifier diode were solved. the detailed analysis of the dual switch converter's operating principle and characteristics were analyzed. Finally,according to the proposed converter,a prototype rated at 200 W was established in the lab,and the experimental results verify the correctness of the analysis.

关 键 词：双管DC/DC变换器 寄生振荡 反向恢复 功率密度 

分 类 号：TM46[电气工程—电器]