适用于航天领域的高效叠加式升压变换器  

High Efficiency Stacked Boost Converter in Aerospace Applications

作　　者：陈骞[1] 郑琼林[1] 李艳[1] 

机构地区：[1]北京交通大学电气工程学院,北京100044

出　　处：《航空学报》2014年第2期506-515,共10页Acta Aeronautica et Astronautica Sinica

基　　金：中国博士后科学基金(2011M500225);高等学校博士学科点专项科研基金(20110009120032)~~

摘　　要：叠加式升压变换器(SBC)的部分功率不通过开关电路,而通过叠加支路直接供给负载,因此可实现较高的效率,适用于航天场合。为了避免输入输出电流断续,采用的变压器为双边磁化的隔离脉冲单元,它与电感、输出滤波电容以及叠加支路共同组成SBC变换器。根据电感位置的不同,分别提出了SBC-Ⅰ、SBC-Ⅱ和SBC-Ⅲ的基本结构与生成规则。基于生成规则推衍出9种SBC变换器,并从电流特性、输入输出电压关系、主电路传递函数、变压器的磁偏问题以及效率的角度对这9种变换器进行分析比较。最后选择一种性能最优的变换器,通过600 W的实验样机验证理论分析结果。Most of the power of a stacked boost converter （SBC） is transferred to the load directly rather than passing through a MOSFET; that is why an SBC with high efficiency is suitable for aerospace applications.In order to avoid input or output current discontinuity,a bilateral magnetized transformer is employed.The SBC is composed of a pulsating cell,an inductor,an output capacitor and a stacked branch.The structure and generation rules of three kinds of SBCs are proposed,which are named SBC-Ⅰ,SBC-Ⅱ and SBC-Ⅲ respectively.Nine topologies generated according to the generation rules are compared in terms of current characteristics,transfer function,DC magnetic bias and efficiency.In addition,experimental results by a 600 W prototype are given to verify the validity of the theoretical analysis.

关 键 词：蓄电池放电调节器 输入并联输出串联 效率 升压变换器 电压型变换器 电流型变换器 

分 类 号：V242[航空宇航科学与技术—飞行器设计] TM133[电气工程—电工理论与新技术]