基于正交磁场的无线能量和数据协同传输技术  

Wireless Power and Data Transfer Based on Orthogonal Magnetic Fields

作　　者：姚友素 唐程雄 王懿杰[1] 刘晓胜[1] 徐殿国[1] Yao Yousu;Tang Chengxiong;Wang Yijie;Liu Xiaosheng;Xu Dianguo(School of Electrical Engineering Harbin Institute of Technology,Harbin 150001 China)

机构地区：[1]哈尔滨工业大学电气工程学院,哈尔滨150001

出　　处：《电工技术学报》2022年第8期1875-1884,共10页Transactions of China Electrotechnical Society

基　　金：中央高校基本科研业务费、电驱动与电推进技术教育部重点实验室开放基金;国家自然科学基金(51777038)资助项目。

摘　　要：该文提出一种新型的无线能量和数据协同传输方案,通过采用基于平面方形线圈和DD线圈的正交磁耦合机构,降低交叉干扰,拓展设计自由度,简化电路分析。提出基于有限元仿真的正交磁耦合机构优化设计方法,阐明能量传输和数据传输交叉干扰小的原因,研究能量和数据传输特性。为验证理论分析,搭建一个传输距离为130mm、磁耦合机构(包括能量线圈和数据线圈)外尺寸为120mm×120mm×15mm、输出功率为47W的样机,样机效率可达68.4%,数据传输速率为1.0Mbit/s。通过对比数据单独传输及能量和数据协同传输时的波形,证明能量传输和数据传输干扰可忽略。This paper proposes a novel wireless power and data transfer(WPDT) scheme by using an orthogonal magnetic coupler consisting of two planar square coils and two DD coils. The proposed scheme shows the advantages of lower crosstalk, more degrees of design freedom, and easier circuit analysis. Optimization design method of the orthogonal magnetic coupler based on finite element simulation is proposed, and the reason for low crosstalk between power transfer and data transfer is clarified. Both power and data transfer characteristics are studied. To verify the theoretical analysis, a WPDT prototype with a maximum output power of 47W was built. The power transfer distance is 130mm, and the outer dimensions of the orthogonal magnetic coupler(including both power and data coils) are 120mm×120mm×15mm. The DC-to-DC efficiency of the prototype is 68.4%, and the data rate is 1.0Mbit/s. By comparing the waveforms of data transmission alone and energy and data cotransmission, it is demonstrated that the crosstalk between power transfer and data transfer can be ignored.

关 键 词：无线能量和数据协同传输(WPDT) 正交磁耦合机构 双边LCC补偿拓扑 二进制频移键控(BFSK) 

分 类 号：TM724[电气工程—电力系统及自动化]