高效率双向Buck/Boost变换器的研究  

Study of High Efficiency Bi-directional Buck/Boost Converter

作　　者：李双刚[1] 张方华[1] 刘硕[1] 王长宝[2] 

机构地区：[1]南京航空航天大学,江苏省新能源发电与电能变换重点实验室,江苏南京210016 [2]国电南瑞科技股份有限公司,江苏南京210061

出　　处：《电力电子技术》2013年第4期73-75,共3页Power Electronics

基　　金：国家高技术研究发展计划(863)(2011AA11A249)~~

摘　　要：介绍了一种用于充放电电机的交错并联双向DC/DC变换器,围绕系统效率的提高,进行了优化。首先对变换器的电感进行了优化,提高了单台变换器效率。在此基础上,利用充放电电流与效率的关系曲线,采用了不同输出功率下,控制不同数量并联模块同时运行的切相控制方案,扩展了系统的高效率运行区间;最后,制作了一台9 kW实验样机进行实验,结果表明,该方案可有效提高变换器效率,在宽负载范围内效率达98%以上。This paper introduces a design of the bi-directional DC/DC converter used for charging and discharging machine and in order to improve its efficiency,the converter is optimized.Firstly ,it optimises inductance of the con- verter to improve the efficiency of the single module.On this basis, according to the curves of the relationship between the efficiency and the charging and discharging currents ,it uses a phase-drop control scheme controlling different number of parallel modules running simultaneously under different output power, so it expanses the efficiency of the system.At last,a prototype of a 9 kW machine has been built.The experimental results show that the scheme can ef- fectively improve the efficiency of the converter and the efficiency is up to 98% in a wide load range.

关 键 词：变换器 双向 充放电 切相 

分 类 号：TM46[电气工程—电器]