Crosstalk Suppression Method for Parallel Power and Data Transmission in Magnetic Coupling-Wireless Power Transfer Systems
Feng Zhankun1, Dai Xin1,2, Cheng Yijing1, Qin Shuai1, Gao Wenhao1
1. School of Automation Chongqing University Chongqing 400043 China; 2. China National Center for International Research on Wireless Power Transfer Technology Chongqing 400043 China
Abstract：With the widespread application of wireless power transfer (WPT) systems, there is an increasing demand for flexible adaptation to varying operational environments, necessitating real-time high- speed information exchange between power transmitters and receivers. However, current systems still fall short of engineering requirements for power transfer capacity and data transmission speed. This paper proposes a crosstalk-suppression method for parallel power and data transmission in magnetic resonance-based WPT (MR-WPT) systems, with a primary focus on enabling high-speed bidirectional communication. First, a stacked coupled structure that enables simultaneous power and data transmission is proposed. A pair of shielded aluminum plates forms a data transmission path between the power coil and ground by utilizing interlayer-distributed electric fields, reducing voltage stress on the data circuit caused by power transfer and mitigating crosstalk between the power and data channels. Based on parasitic capacitance distribution between the shielding plates and power coils, an equivalent parasitic capacitance model is established. Then, the equivalent circuit models for both power and data transmission channels are developed. Higher-order filtering networks in the data transmission path suppress strong magnetic interference and system EMI from power transfer, while ensuring high gain for data carrier transmission. The absence of dedicated data coils or shared channels with power transfer simplifies system design. Subsequently, a parameter design method for the simultaneous wireless power and data transfer (SWPDT) system is proposed. This method effectively reduces strong magnetic interference and system EMI while minimizing the impact of power transfer on data transmission speed. As a result, communication rates are improved. Through channel capacity analysis of the data transmission path, the maximum achievable data rates under different power levels are determined. Finally, the experimental setup achieved forward and backward data transmission speeds of 21.6 Mbit/s at a system output power of 1 018 W. Under the magnetic shielding provided by metallic plates, the system maintains excellent power transfer performance and high data transmission speed across varying operating conditions, including different power levels and lateral or longitudinal misalignments. The presence of shielding plates slightly reduces the self- and mutual inductances of the power-coupling coils. The power transfer capability is diminished, and a more pronounced shielding effect against electromagnetic leakage is provided. Compared with existing wireless power and data transmission technologies that use shielding plates or parasitic coil parameters, the feasibility of the proposed approach is verified.
冯占昆, 戴欣, 成奕憬, 秦帅, 高文浩. 基于磁耦合无线电能传输系统的能量信号并行传输串扰抑制方法[J]. 电工技术学报, 2026, 41(12): 3968-3986.
Feng Zhankun, Dai Xin, Cheng Yijing, Qin Shuai, Gao Wenhao. Crosstalk Suppression Method for Parallel Power and Data Transmission in Magnetic Coupling-Wireless Power Transfer Systems. Transactions of China Electrotechnical Society, 2026, 41(12): 3968-3986.
[1] 薛明, 杨庆新, 章鹏程, 等. 无线电能传输技术应用研究现状与关键问题[J]. 电工技术学报, 2021, 36(8): 1547-1568. Xue Ming, Yang Qingxin, Zhang Pengcheng, et al.Application status and key issues of wireless power transmission technology[J]. Transactions of China Electrotechnical Society, 2021, 36(8): 1547-1568. [2] 周岩, 刘志丹, 李烁涵. 虚拟多输入多输出无线电能与信息同步传输技术[J]. 电工技术学报, 2024, 39(14): 4282-4293. Zhou Yan, Liu Zhidan, Li Shuohan.Virtual multiple input multiple output simultaneous wireless power and information transfer technology[J]. Transactions of China Electrotechnical Society, 2024, 39(14): 4282-4293. [3] 冯天旭, 史可, 孙跃, 等. 基于互感识别及移相角优化的全方位无线电能传输系统靶向传能方法[J]. 电工技术学报, 2023, 38(24): 6581-6595. Feng Tianxu, Shi Ke, Sun Yue, et al.Targeted power transfer method for omnidirectional wireless power transfer system based on mutual inductance identi-fication and phase-shift angle optimization[J]. Transac-tions of China Electrotechnical Society, 2023, 38(24): 6581-6595. [4] 靖永志, 付康, 谯柯, 等. 基于积分解调的无线能量与信号同步传输方法[J]. 电工技术学报, 2024, 39(14): 4270-4281. Jing Yongzhi, Fu Kang, Qiao Ke, et al.Simultaneous transmission method of wireless power and signals based on integral demodulation[J]. Transactions of China Electrotechnical Society, 2024, 39(14): 4270-4281. [5] 刘哲, 苏玉刚, 邓仁为, 等. 基于双边LC补偿的单电容耦合无线电能传输系统[J]. 电工技术学报, 2022, 37(17): 4306-4314. Liu Zhe, Su Yugang, Deng Renwei, et al.Single capacitor coupled wireless power transmission system based on bilateral LC compensation[J]. Transactions of China Electrotechnical Society, 2022, 37(17): 4306-4314. [6] 苏玉刚, 钱林俊, 刘哲, 等. 水下具有旋转耦合机构的电场耦合无线电能传输系统及参数优化方法[J]. 电工技术学报, 2022, 37(10): 2399-2410. Su Yugang, Qian Linjun, Liu Zhe, et al.Underwater electric-filed coupled wireless power transfer system with rotary coupler and parameter optimization method[J]. Transactions of China Electrotechnical Society, 2022, 37(10): 2399-2410. [7] 孙天, 宋贝贝, 崔淑梅, 等. 电动汽车无线充电系统接收端位置大范围唯一性辨识系统设计[J]. 电工技术学报, 2024, 39(21): 6626-6635, 6792. Sun Tian, Song Beibei, Cui Shumei, et al.Design of accurate position detection system applied to large misalignment range for electric vehicle wireless charging system[J]. Transactions of China Electro-technical Society, 2024, 39(21): 6626-6635, 6792. [8] 于宙, 肖文勋, 张波, 等. 电场耦合式无线电能传输技术的发展现状[J]. 电工技术学报, 2022, 37(5): 1051-1069. Yu Zhou, Xiao Wenxun, Zhang Bo, et al.Development status of electric-field coupled wireless power transmission technology[J]. Transactions of China Electrotechnical Society, 2022, 37(5): 1051-1069. [9] 苏玉刚, 周玮, 呼爱国, 等. 基于方波载波占空比调制的ECPT系统能量信号并行传输技术[J]. 电工技术学报, 2015, 30(21): 51-56. Su Yugang, Zhou Wei, Hu Aiguo, et al.A power-signal parallel transmission technology for ECPT systems based on duty cycle modulation of square wave carrier[J]. Transactions of China Electro-technical Society, 2015, 30(21): 51-56. [10] 苏玉刚, 朱梦磊, 卿晓东, 等. 基于电场耦合式电能传输系统的电能与信号回路分离式并行传输技术[J]. 电工技术学报, 2018, 33(10): 2227-2236. Su Yugang, Zhu Menglei, Qing Xiaodong, et al.Electric-field coupled power and signal transfer tech-nology based on separate circuit loops[J]. Transac-tions of China Electrotechnical Society, 2018, 33(10): 2227-2236. [11] 邓棚亓, 唐春森, 苏玉刚, 等. 基于平衡阻抗的MC-WPT系统传导干扰抑制方法[J]. 中国电机工程学报, 2024, 44(22): 9027-9039. Deng Pengqi, Tang Chunsen, Su Yugang, et al.Conduction interference suppression method for MC-WPT system based on balanced impedance[J]. Proceedings of the CSEE, 2024, 44(22): 9027-9039. [12] 华超, 周岩, 胡震, 等. 基于移相调制的无线供电与信息协同传输技术[J]. 电工技术学报, 2023, 38(16): 4233-4245. Hua Chao, Zhou Yan, Hu Zhen, et al.Simultaneous wireless power and information transmission method based on phase-shifted modulation[J]. Transactions of China Electrotechnical Society, 2023, 38(16): 4233-4245. [13] Si Ping, Hu A P, Malpas S, et al.A frequency control method for regulating wireless power to implantable devices[J]. IEEE Transactions on Biomedical Circuits and Systems, 2008, 2(1): 22-29. [14] Yao Yousu, Sun Pengfei, Liu Xiaosheng, et al.Simultaneous wireless power and data transfer: a comprehensive review[J]. IEEE Transactions on Power Electronics, 2021, 37(3): 3650-3667. [15] 苏玉刚, 邓晨琳, 胡宏晟, 等. 基于电场耦合的电能信号并行传输系统串扰抑制方法[J]. 电工技术学报, 2024, 39(6): 1613-1626. Su Yugang, Deng Chenlin, Hu Hongsheng, et al.Crosstalk suppression method for electric-field coupled power and signal parallel transmission system[J]. Transactions of China Electrotechnical Society, 2024, 39(6): 1613-1626. [16] Zeng Yingqin, Lu Conghui, Liu Renzhe, et al.Wireless power and data transfer system using multidirectional magnetic coupler for swarm AUVs[J]. IEEE Transactions on Power Electronics, 2023, 38(2): 1440-1444. [17] Chen Guodong, Sun Yue, Huang Junxin, et al.Wireless power and data transmission system of submarine cable-inspecting robot fish and its time-sharing multiplexing method[J]. Electronics, 2019, 8(8): 838. [18] Yang Lei, Huang Jingjing, Feng Baoxiang, et al.Undersea wireless power and data transfer system with shared channel powered by marine renewable energy system[J]. IEEE Journal on Emerging and Selected Topics in Circuits and Systems, 2022, 12(1): 242-250. [19] 刘晓胜, 顾轩溥, 姚友素, 等. 基于电容调制的无线电能传输系统信号电能同步传输[J]. 电力自动化设备, 2018, 38(3): 140-146, 154. Liu Xiaosheng, Gu Xuanpu, Yao Yousu, et al.Synchronous transmission of signal and electric energy in wireless power transmission system based on capacitance modulation[J]. Electric Power Auto-mation Equipment, 2018, 38(3): 140-146, 154. [20] 程豪, 周玮, 张泽恒, 等. 一种基于平面-曲面解耦线圈的旋转机构无线电能与信号并行传输技术[J]. 电工技术学报, 2025, 40(14): 4395-4405. Cheng Hao, Zhou Wei, Zhang Zeheng, et al.A parallel transmission technology for wireless power and signal in a rotating mechanism based on plane-curved decoupling coil[J]. Transactions of China Electrotechnical Society, 2025, 40(14): 4395-4405. [21] Yao Yousu, Wang Yijie, Liu Xiaosheng, et al.Analysis, design, and implementation of a wireless power and data transmission system using capacitive coupling and double-sided LCC compensation topo-logy[J]. IEEE Transactions on Industry Applications, 2019, 55(1): 541-551. [22] Li Tao, Sun Zhichao, Wang Yijie, et al.Undersea simultaneous wireless power and data transfer system with extended communication distance and high rate[J]. IEEE Transactions on Power Electronics, 2024, 39(3): 2917-2921. [23] 苏玉刚, 邓晨琳, 胡宏晟, 等. 信号与能量极板层叠方式下的电场耦合式无线电能传输系统[J]. 中国电机工程学报, 2024, 44(19): 7762-7772. Su Yugang, Deng Chenlin, Hu Hongsheng, et al.Electric-field coupled wireless power transfer system with signal plate and energy plate stacking mode[J]. Proceedings of the CSEE, 2024, 44(19): 7762-7772. [24] Yan Guangyu, Han Wei, Liu Chang, et al.A simultaneous wireless power and full-duplex data transfer system using a mix of inductive and capa-citive couplings[J]. IEEE Transactions on Circuits and Systems II: Express Briefs, 2025, 72(1): 323-327. [25] 李雨蒙. 磁场与电场结合的水下无线能量与信号并行传输系统设计与实现[D]. 重庆: 重庆大学, 2023. Li Yumeng.Design and implementation of under-water wireless energy and signal parallel transmission system with magnetic and electric field integration[D]. Chongqing: Chongqing University, 2023. [26] 叶宗彬, 高晨潇, 刘旭. 基于屏蔽极板全双工通信无线电能传输系统[J]. 电工技术学报, 2025, 40(12): 3770-3786. Ye Zongbin, Gao Chenxiao, Liu Xu.Wireless power transmission system based on full-duplex com-munication with shielded capacitor plate[J]. Transac-tions of China Electrotechnical Society, 2025, 40(12): 3770-3786. [27] 李阳, 石少博, 刘雪莉, 等. 磁场耦合式无线电能传输耦合机构综述[J]. 电工技术学报, 2021, 36(增刊2): 389-403. Li Yang, Shi Shaobo, Liu Xueli, et al.Overview of magnetic coupling mechanism for wireless power transfer[J]. Transactions of China Electrotechnical Society, 2021, 36(S2): 389-403.
2026, Vol. 41 
