一种新型软开关BUCK变换器  

A Novel Soft-switching BUCK Converter

作　　者：刘吉星[1] 沈锦飞[1] 

机构地区：[1]江南大学物联网学院电气自动化研究所,江苏无锡214122

出　　处：《电气自动化》2014年第6期14-15,32,共3页Electrical Automation

基　　金：江苏省科技支撑计划项目(BE2013025)

摘　　要：磁耦合谐振式无线电能传输采用直流斩波调压控制传输功率,传统的直流斩波电路开关损耗大,因此提出了一种新型的软开关BUCK变换器的改进电路,在电路中添加耦合电感、辅助电感和二极管,可以实现零电流开通和零电压关断。变换器结构简单,便于控制。介绍了电路工作原理和过程,设计了电路参数,进行了仿真和实验研究,最后给出了仿真和实验波形。The magnetically coupled resonant wireless power transmission adopts DC chopper control over transmission power, while traditional DC chopper circuit switching has a high loss. This paper presents an improved circuit for a novel soft-switching BUCK DC-DC converter, where a coupled inductor, auxiliary inductor and diode are added to realize zero current switching-on and zero voltage switching-off. The converter has a simple structure and is easy to control. Furthermore, the paper describes the working principle and process of the circuit, designs circuit parameters, completes simulation and experimental research, and finally gives simulation and test waveforms.

关 键 词：BUCK变换器 软开关 耦合电感 零电流开通 无线电能传输 

分 类 号：TN624[电子电信—电路与系统]