一种同向耦合电感交错并联三管升降压变换器研究  

Research on Interleaved Buck-Boost Converter with Three Switches Based on Co-Directional Coupling Inductor

作　　者：张先进 朱海荣 ZHANG Xianjin;ZHU Hairong(Jiangsu Research and Development Center of Wind-Solar Complementary Power Generation Engineering Technology,Jiangsu College of Engineering and Technology,Nantong Jiangsu 226007,China)

机构地区：[1]江苏工程职业技术学院江苏省风光互补工程技术研究开发中心,江苏南通226007

出　　处：《电子器件》2023年第1期133-137,共5页Chinese Journal of Electron Devices

基　　金：江苏省高校青蓝工程项目([2020]10号,[2019]3号);南通市基础科学研究项目(JC2020154)。

摘　　要：针对传统的双管Buck-Boost变换器存在的问题,研究了一种同向耦合电感交错并联三管Buck-Boost变换器。从同向耦合电感的等效电路出发,详细地分析了该电路的工作原理,得出该电路既可以实现占空比扩展,又可以实现Buck电路部分功率器件的软开。该变换器控制电路可由常用的单片双PWM输出控制芯片构成(例如UC3525),非常简单。实验结果表明相应的分析是正确可行的。In order to resolve the part problems of conventional two-switch Buck-Boost converter,a three-switch interleaved Buck-Boost converter based on co-directional coupled inductor is proposed.The operating principle is analyzed in detail,and it is concluded that ex-panded duty cycle and soft switching at Buck circuit side can be achieved.The control circuit may be consisted of a conventional control chip with dual interleaved PWM outputs,such as a single UC3525,therefore,the control circuit is very simple.At last,the experimental results verify the analysis.

关 键 词：升降压 耦合电感 软开关 占空比扩展 

分 类 号：TM461[电气工程—电器]