适于可再生能源发电储能系统中的双向直流变换器  

Bidirectional DC/DC Converter for Energy Storage System in Renewable Power Generation

作　　者：吴贵洋 王建章 胡雪峰 WU Guiyang;WANG Jianzhang;HU Xuefeng(School of Electronic and Information Engineering,Anhui University of Technology,Ma,anshan 243002,China)

机构地区：[1]安徽工业大学电气与信息工程学院,马鞍山243032

出　　处：《电源学报》2018年第6期45-51,共7页Journal of Power Supply

基　　金：国家自然科学基金资助项目(51577002);安徽省自然科学基金资助项目(1408085ME80);安徽省教育厅自然科学重点资助项目(KJ2012A048)~~

摘　　要：研究了一种交错式双向直流变换器,该变换器工作在Boost方向时输入端进行交错并联,减小了输入电流纹波,输出端进行交错串联,提高了升压变比;工作在Buck方向时,输入端进行交错串联,输出端进行交错并联,因此该模式下具有较大的降压变比,同时减小了输出电流纹波。另外,在两种工作模式下,功率器件的电压应力都得到了降低。详细地分析了该变换器在两种模式下的工作原理及稳态特性,最后给出了实验结果以验证理论分析的正确性。An interleaved-type bidirectional DC/DC converter is studied in this paper.When this converter operates in Boost mode,the input is connected in parallel,which reduces the input current ripple;meanwhile,the output is connected in series so that a large voltage conversion ratio is achieved.When it operates in Buck mode,the input is connected in series while the output is connected in parallel,which extends the step-down ratio and minimize the output current ripple.Moreover,the voltage stresses of power devices can be reduced in both modes.The operation principles and steady-state characteristics of the proposed converter in both modes are analyzed in detail.Finally,experimental results were given to verify the theoretical analysis.

关 键 词：双向直流变换器 大变比 电流纹波 电压应力 

分 类 号：TM46[电气工程—电器]