单极性电流控制半桥电压平衡电路研究  

Research on Half-bridge Voltage Balanced Circuit Based on Unipolar Current Control

作　　者：张先进 吴迪 ZHANG Xianjin;WU Di(Jiangsu Province Landscape Complementary Power Generation Engineering Research and Development Center,Jiangsu College of Engineering and Technology,Nantong 226007,Jiangsu,China;School of Electronic Engineering,Jiangsu Ocean University,Lianyungang 222005,Jiangsu,China)

机构地区：[1]江苏工程职业技术学院江苏省风光互补发电工程技术研发中心,江苏南通226007 [2]江苏海洋大学电子工程学院,江苏连云港222005

出　　处：《电气传动》2021年第6期25-30,共6页Electric Drive

基　　金：国家自然科学基金资助项目(51307089);南通市科技计划项目(JCZ18037);江苏工程职业技术学院自然科学项目(GYKY2018)。

摘　　要：电压平衡电路不但可以将两线制直流微网转变成三线制直流微网,而且还可以应用在平衡串联电容或电池组电压等场合。半桥电压平衡电路具有结构简单、成本低廉等优点。但是,在互补驱动条件下,当电感电流工作在双极性时存在无功电流。因此,在前期研究基础之上,提出了单极性电流控制方法,详细地分析了单极性控制下半桥电压平衡电路工作原理。仿真和实验结果表明,在单极性控制下半桥电压平衡电路能够有效地实现输出电压均衡功能,并消除无功电流。A voltage balancing circuit not only may change a two-wire DC power system into a three-wire DC power system,but also can balance voltage of series capacitors or battery packs.A half-bridge voltage balanced circuit is a simple and low-cost topology,but it may have a reactive current when the inductor current works in bipdarity under complimentary driving technology.A unipolar current control method was proposed and the operation principle was analyzed in details.Finally,the simulation and experimental results verify the half-bridge voltage balanced circuit with the proposed control method has a good ability of balancing voltage and eliminating active current in stable and dynamic states.

关 键 词：单极性电流 半桥电路 无功电流 电压平衡 

分 类 号：TM46[电气工程—电器]