不对称半桥变换器并联运行的小信号分析  

Small-Signal Analysis of the Paralleling Asymmetrical Half Bridge Converters

作　　者：黄子怡[1] 周洁敏[1] 陈时淦[1] 杨帆[1] 

机构地区：[1]南京航空航天大学,江苏南京210016

出　　处：《电力电子技术》2009年第4期61-63,共3页Power Electronics

摘　　要：为了准确预测不对称半桥变换器的动态特性,合理设计均流控制电路,以实现不对称半桥变换器并联系统的负载均分,基于小信号分析理论,建立了不对称半桥变换器并联电路的小信号模型,并根据最大电流均流技术原理,提出了均流控制电路的设计要点。最后根据分析结果,制作了一台由两个不对称半桥变换器并联组成的样机,通过实验验证了小信号分析结果及设计要点的正确性。In order to predict the dynamic performances of asymmetrical half bridge converter correctly,to design the current-sharing circuit reasonably and to realize the ballanced load-sharing of paralleling asymmetric half bridge converter,a small-signal model of the paralleling asymmetrical half bridge converter is established based on the theory of small-signal analysis.Then,the design points of the automatic current-sharing control circuit are analyzed.The established model is finally adopted to setup a prototype with two paralleling asymmetrical half bridge converters.The experimental results validate the above conclusions.

关 键 词：变换器 并联运行/不对称半桥 均流 小信号分析 

分 类 号：TM46[电气工程—电器]