单向单线电能传输原理与实现方法研究

打开文本图片集

关键词：单线电能传输；单向单线；传输原理；传输结构；传输效率 DOI：10.15938/j. emc.2025.11.011 中图分类号：TM724 文献标志码：A 文章编号：1007-449X（2025）11-0109-11

Research on principle and realization method of one-way single-wire power transfer

LI Yang， HU Wei， ZHAI Yujie， ZHU Lihua， ZHOU Wei（Tianjin KeyLaboratoryof NewEnergy Power Conversion，Transmissonand Intelligent Control，Tianjin UniversityofTechnology，Tianjin ，China）

Abstract：Single-wire power transfer technology addresses the power supply issue in special scenarios，offering a third approach alongside traditional wired and wirelessmethods.However，traditional single-wire power transfer relies on spatial electric fields，often involving high voltage levels that generate large electric field radiation. To tackle these issues，a one-way single-wire power transfer method was proposed， based on altering theradiation pattern of electromagnetic fields to focus or confine themaround the transmision medium，facilitating directional guidance and effcient transmission of electromagnetic fields through the medium. A novel transmisson structure was constructed， with a high-frequency power supply，impedance matching，mode conversion transmitting device，single-wire medium and mode conversion receiving device as its core. To enhance the transmission eficiency，a system simulation model was established，and the parameters of the mode conversion device were optimized and designed accordingly. Finally，with a power supply power of 50W ， the system was built for experiments，achieving a transmission distance of 1O meters with a transmission efficiency of 77.28% ，verifying feasibility of the proposed

method and correctness of the simulation study.

Keywords：single-wire power transfer;one-way single-wire； transfer principle； transmission structure; transmission efficiency

0引言

单线电能传输技术（single-wire power transfer，SWPT）是利用单根导线通过空间电场和位移电流实现将电能从电源端传递至用电设备端的一种新型传输模式，即仅使用一根导线为负载提供电能的颠覆性技术，是一种新型的电能传输方式[1]。（剩余15648字）