基于积分解调的无线能量与信号同步传输方法  

Simultaneous Transmission Method of Wireless Power and Signals Based on Integral Demodulation

作　　者：靖永志[1,2] 付康 谯柯 杨亮涛 刘沁宇 Jing Yongzhi;Fu Kang;Qiao Ke;Yang Liangtao;Liu Qinyu(Key Laboratory of Maglev Technology and Maglev Train Ministry of Education Chengdu 611756, China;School of Electrical Engineering Southwest Jiaotong University Chengdu 611756, China;Tangshan Graduate School Southwest Jiaotong University Tangshan 063000, China)

机构地区：[1]磁浮技术与磁浮列车教育部重点实验室,成都611756 [2]西南交通大学电气工程学院,成都611756 [3]西南交通大学唐山研究生院,唐山063000

出　　处：《电工技术学报》2024年第14期4270-4281,共12页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(52077183)。

摘　　要：针对电感耦合式无线能量与信号单耦合通道传输系统信号通道存在能量传输干扰和信号传输速率低等问题,提出一种基于积分解调的无线能量与信号同步传输方法。该方法首先将信号接收端载波与相干载波混频,然后送入积分器进行积分,再通过比较器还原原始数据。能量端采用双边LCC补偿拓扑结构,使负载在一定范围内变化时输出电流稳定。通过对能量传输和信号传输通道中的电路结构与电压增益分析,得到系统参数对传输特性的影响规律。最后,通过实验平台对所提方法进行验证,实验表明,能量传输几乎不受信号传输影响,所提方法具有更高的频带利用率,并且对能量干扰载波具有较好的抑制能力,实现了1.2 Mbit/s信号传输速率。Compared with traditional wired transmission,wireless power transfer(WPT)technology does not require physical contact to complete the transmission of electrical energy with power supply flexibility,safety,and reliability,which has been widely used in consumer electronics,smart homes,and other fields.In practical applications,real-time signal transmission is also required to complete the control instructions and upload feedback signals to enhance the overall performance of the system.Simultaneous wireless power and data transfer(SWPDT)technology can be realized using RF technology,multi-coupled channel technology and single-coupled channel technology,and single-coupled channel technology.It does not need complex pairing,and has high flexibility,small size,and wide applications.Single-coupled channel technology can be divided into two categories according to the signal transmission mode:energy modulation and high-frequency carrier modulation.The frequency of the energy carrier limits the signal transmission rate of energy modulation,affecting the stability of the energy during transmission.In contrast,high-frequency carrier modulation can achieve a higher signal transmission rate with simple control and low power loss.The channel bandwidth of the SWPDT system with a single coupling channel is limited,posing challenges for efficient power transmission due to interference between energy and signal channels.The analog circuit demodulation mode is difficult to extract envelope information,resulting in underutilization of bandwidth and increased susceptibility to interference.Therefore,this paper proposes a wireless energy and signal synchronous transmission method based on integral demodulation,which has a higher frequency band utilization rate and signal transmission rate.The energy interference carrier can be suppressed.Compared with the traditional analog circuit demodulation method,it does not need complex envelope detection and filter circuits,demonstrating robust anti-interference ability.The system proposed in t

关 键 词：无线电能传输 单耦合通道 双边LCC补偿 积分解调 

分 类 号：TM724[电气工程—电力系统及自动化]