新型双向DC/DC变流器在不停电电源系统中的应用  

Application of new bidirectional DC/DC converter in uninterruptible power supply system

作　　者：房绪鹏 赵扬 于志学 Fang Xupeng;Zhao Yang;Yu Zhixue(College of Electrical Engineering and Automation,Shandong University of Science and Technology,Qingdao 266590,China)

机构地区：[1]山东科技大学电气与自动化工程学院,山东青岛266590

出　　处：《电子技术应用》2018年第9期141-145,共5页Application of Electronic Technique

基　　金：山东科技大学研究生教育创新计划(2014BK023);中国博士后科学基金(20090461254)

摘　　要：为了解决不停电电源中存在的功率流向分配不均以及升、降压能力不足等问题,在传统的双向Buck-Boost型DC/DC变流器的基础上,从拓扑结构着手展开研究,提出了一种新型双向DC/DC变流器。通过分析该变流器的电路拓扑和工作原理,详细介绍了其在功率正向传输和反向传输下的两种工作模式,经推导得出对应不同模式的输出电压表达式。与传统的双向Buck-Boost型DC/DC变流器相比,研究的新型双向DC/DC变流器具有较高的电压增益,较小的功率开关电压应力,稳定的输出电压等优点。最后,通过理论分析并且搭建实验电路,验证了这种新型拓扑的可行性及优越性。In order to solve the uninterruptible power supply in the power flow of the uneven distribution and raising and reducing capacity problems,based on the bidirectional Buck-Boost DC/DC converter on the traditional topology from begin to research,a new type of bidirectional DC/DC converter is put forward.By analyzing the circuit topology and working principle of the converter,two operating modes of power forward transmission and reverse transmission are introduced in detail,and the output voltage expressions corresponding to different modes are derived.Compared with the conventional bidirectional Buck-Boost type DC/DC converter,the new bidirectional DC/DC converter proposed in this paper has higher voltage gain,smaller power switching voltage stress,and more stable output voltage.Finally,the feasibility and advantages of the new topology are verified by theoretical analysis and experimental circuit.

关 键 词：不停电电源 双向DC/DC变流器 电压增益 开关电压应力 

分 类 号：TM461[电气工程—电器]