基于对称控制的不对称半桥变换器建模与设计  

Symmetrical Control of Asymmetrical Half Bridge Converter Modeling and Design

作　　者：陈宗祥 何瑞阳 夏冰 葛芦生 CHEN Zong-xiang;HE Rui-yang;XIA Bing;GE Lu-sheng(Anhui University of Technology,Ma'anshan 243032,China)

机构地区：[1]安徽工业大学,电气与信息工程学院,安徽马鞍山243032 [2]马钢股份公司设备部,安徽马鞍山243032

出　　处：《电力电子技术》2018年第12期91-92,132,共3页Power Electronics

基　　金：国家自然科学基金(51277003).

摘　　要：传统不对称半桥(AHB)存在变压器激磁电流的直流偏磁、开关管电压应力不同等现象;而对称控制有助于改善这些问题。在此介绍了对称控制的AHB电路原理,提出了利用状态空间平均法建立基于对称控制的AHB变换器小信号模型,分析了静态工作点并设计了补偿网络。最后制作了600 W实验样机,实验结果验证了理论分析。The imperfections,including the direct current bias current of the transformer and the unbalanced voltage stress of power electronic devices,have been considered in asymmetric half bridge (AHB)topology.At the same time, the performances of half bridge can been improved by symmetrical control.The symmetrical principle of AHB topology is introduced firstly.And then a small signal model,which is used to analyze the static operating point and design the compensation network,is established using state space averaging method.Finally,a 600W laboratory prototype is built and the theoretical analysis is verified from the experimental results.

关 键 词：变换器 对称控制 不对称半桥 小信号模型 

分 类 号：TM46[电气工程—电器]