基于谐波通讯的无线电能与反向信号同步传输技术  

Simultaneous Wireless Power and Reverse Signal Transmission Technology Based on Harmonic Communication

作　　者：夏晨阳[1] 鄢家安 任刚 杨子健 刘云海 鲁扬 廖志娟 李卫龙[2] XIA Chenyang;YAN Jia’an;REN Gang;YANG Zijian;LIU Yunhai;LU Yang;LIAO Zhijuan;LI Weiong(School of Electrical Engineering,China University of Mining and Technology,Xuzhou 221008,Jiangsu Province,China;Anhui Academy of Coal Science,Hefei 230001,Anhui Province,China)

机构地区：[1]中国矿业大学电气工程学院,江苏省徐州市221008 [2]安徽省煤炭科学研究院,安徽省合肥市230001

出　　处：《中国电机工程学报》2024年第13期5297-5307,I0023,共12页Proceedings of the CSEE

基　　金：国家自然科学基金项目(52277020);江苏省自然科学基金项目(BK20211246);安徽省自然科学基金项目(2008085UD14).

摘　　要：针对现有无线电能与反向信号同步传输(simultaneous wireless power and reverse signal transmission,SWPRST)系统存在较大无功功率、负载电压易受信号传输发生波动或需要额外增加高频信号源等问题,提出一种基于谐波通讯的SWPRST技术,通过利用逆变器输出方波电压中的基波分量传输电能,三次谐波分量传输信号。不需要外加高频信号发射电路,实现了可靠的电能与反向信号同步传输。首先,给出基于谐波通讯的SWPRST系统结构,对其工作模式和基本原理进行分析;接着,建立系统等效数学模型,分析系统参数取值对信号与电能传输之间的互扰影响;然后,对信号的调制解调电路进行设计,分析信号检测通道参数对信号传输速率的影响;最后,搭建实验平台对理论分析进行验证,实验结果表明,该方法在有效实现了无线电能与反向信号同步传输的同时,信号无误码率传输速率可达5 kbps,同时系统具有无功小,输出负载电压几乎无波动(电压波动率0.33%)等优点。该方法采用谐波作为信号载体,为多频利用式实现电能与反向信号同步传输系统提供一种新的思路,具有较好的理论意义与实际工程应用价值。This paper proposes a simultaneous wireless power and reverse signal transmission(SWPRST)technology based on harmonic communication to address the issues of existing SWPRST systems,which typically face issues such as high reactive power,susceptibility of load voltage to signal transmission,or the necessity of incorporating additional high-frequency signal sources.The proposed method realizes reliable SWPRST without requiring an external high-frequency signal transmission circuit.First,the structure of the proposed SWPRST system based on harmonic communication is presented,and its working mode and basic principle are analyzed.Next,the equivalent mathematical model of the system is established.The mutual interference between the signal and the power transmission is analyzed.Then,the modulation and demodulation circuit of the signal are designed,and the influence of the signal detection channel parameters on the signal transmission rate is analyzed.Finally,an experimental platform is built to verify the theoretical analysis.The experimental results show that proposed method effectively achieves SWPRST,and the signal has an error free transmission rate of up to 5 kbps.At the same time,the system has the advantages of low reactive power and almost no fluctuation in output load voltage(voltage fluctuation rate of 0.33%).This method uses harmonics as the signal carrier,having great significance on the design and study of SWPRST in multi-frequency utilization,and has good theoretical significance and practical engineering application value.

关 键 词：无线电能传输 谐波 反向信号 稳压输出 无线电能与信号同步传输 

分 类 号：TM724[电气工程—电力系统及自动化]