大学物理 ›› 2020, Vol. 39 ›› Issue (06): 33-38.doi: 10.16854 /j.cnki.1000-0712.190324

• 物理实验 • 上一篇    下一篇

谐振式磁耦合无线电能传输系统传输特性及实验仪设计

陈国杰,周有平,严冬,谢嘉宁,李斌   

  1. 佛山科学技术学院物理与光电工程学院,广东佛山528000
  • 收稿日期:2019-07-22 修回日期:2019-12-21 出版日期:2020-06-20 发布日期:2020-06-17
  • 作者简介:陈国杰( 1965—) ,男,湖南祁东人,佛山科学技术学院物理与光电工程学院教授,博士,主要从事光电子技术教学与研究.
  • 基金资助:
    教育部新工科研究与实践项目“面向新工科光电类专业人才培养模式改革与实践”( 高教厅函〔2018〕17 号) ; 广东省本科高校高

    等教育教学改革项目“面向新工科‘双学院制’育人模式的探索与实践”( 粤教高函( 2017) 170 号) 资助

Transmission characteristics of resonant magnetic coupled wireless   power transmission system and design of experiment instrument

CHEN Guo-jie,ZHOU You-ping,YAN Dong,XIE Jia-ning,LI Bin   

  1. School of Physics and Optoelectronic Engineering,Foshan University,Foshan,Guangdong 528000,China)
  • Received:2019-07-22 Revised:2019-12-21 Online:2020-06-20 Published:2020-06-17

摘要: 利用磁耦合理论,分析了谐振式磁耦合无线电能传输系统的传输特性,开发了一种谐振式双线圈磁耦合无线电能

传输实验仪.利用LED 负载直观定性地观测了系统的传输特性,实验测量了发射线圈高频等效电阻及系统输出功率与信号频

率、传输距离和负载的关系,获到了最大传输功率条件和频率分裂规律.实验表明,线圈在MHz 频率下趋肤效应明显,频率越

高,等效电阻越大; 磁耦合无线电能传输系统的谐振特性不仅与频率相关,还与耦合系数相关; 最佳全谐振时输出功率和传输

效率最大.本实验仪可拓展测量RLC 串联电路稳态特性,工作稳定,实验与理论吻合好.

关键词: 磁耦合无线电能传输, 传输特性, 谐振频率, 趋肤效应, 设计

Abstract: The transmission characteristics of a magnetic coupled wireless power transfer system are analyzed

based on the magnetic coupling theory,and an experiment instrument of the resonant magnetic coupled wireless

power transfer system is developed. The transmission characteristics of the system are visually observed under the

LED load. The high frequency equivalent resistance of the transmitting coil is measured. The condition of maximum

output power and the law of frequency splitting are obtained by exploring the relations between the output power and

the signal frequency,transmission distance,or load of the system. The results indicate that the trend-skin effect of

the high frequency coil is obvious; and the higher the frequency is,the greater the equivalent resistance. The resonant

characteristics of the magnetic coupled wireless power transfer system are not only related to the transmission

signal frequency and the inherent frequency of the receiver and transmit circuit,but also linked to their coupling coefficient;

the output power as well as the transmission efficiency is maximized at the optimal full resonance. Our design

experiment instrument can be generalized to measure the stable characteristics of RLC series circuits,and operate

stably. The experimental results are consistent with the theory.

Key words: magnetic coupled wireless power transmission, transmission characteristic, resonance frequency, trend-skin effect, design