一种具备CC/CV自动转换功能的新型WPT系统  

A Novel WPT System With CC/Cy Aiitomatio Transition Function

作　　者：周学斌 王林惠 陈爱武[1] 周松青 ZHOU Xue-bin;WANG Lin-hui;CHEN Ai-wu;ZHOU Song-qing(Hunan University of Science and Engineering,Yongzhou 425199,China)

机构地区：[1]湖南科技学院,湖南永州425199

出　　处：《电力电子技术》2024年第10期75-78,共4页Power Electronics

基　　金：湖南省自然科学基金(2024JJ7186);湖南省教育厅普通高等学校重点实验室课题项目(SJT012);湖南省教育科学研究工作者协会“十四五”规划2024年度课题(XJKX24B033)。

摘　　要：相比于传统的采用闭环控制、混合拓扑切换和频率切换等方法实现恒流(CC)和恒压(CV)输出特性的无线电能传输(WPT)系统,此处提出了一种具备CC/CV自动转换功能的新型WPT系统,该系统由于其特殊的电路结构使其在无需额外交流开关、大量的补偿元件、通信链路和检测电路的情况下能够实现CC/CV的自动切换。在充电初期,系统以S-LCC/T补偿网络对负载进行CC充电,随后以S-LCC补偿网络对负载进行CV充电。此外,该系统在整个充电过程都能实现零相位角(ZPA)运行,保证了系统的高效性。因此,该系统具有简单的结构和较低的制造成本。此处搭建了一台充电电流和充电电压分别设定为2.5 A和56 V的实验样机,其最大效率可达到92.13%。Compared with the traditional wireless power transfer(WPT)systems that use closed-loop control,hybrid to-pology switching,frequency switching and other methods to achieve constant current(CC)and constant voltage(CV)output characteristics,a novel WPT system with CC/CV automatic transition function is proposed.Due to its special circuit structure,this system can achieve automatic CC/CV transition without the need for additional AC switches,a large number of compensation components,communication links and detection circuits.In the early stage of charging,the system uses the S-LCC/T compensation network to perform CC charging on the load and then uses the S-LCC compensation network to perform CV charging on the load.In addition,the system can achieve the zero phase angle(ZPA)operation during the entire charging process,ensuring the high efficiency of the system.Therefore,the proposed system has a simple structure and low manufacturing cost.A experimental prototype is built with the charging current and charging voltage set to 2.5 A and 56 V respectively and its maximum efficiency can reach at 92.13%.

关 键 词：无线电能传输 恒流 恒压 

分 类 号：TM713[电气工程—电力系统及自动化]