磁耦合谐振式高频自激振荡无线电能传输系统设计

Design of Magnetically-Coupled Resonant High-Frequency Self-Excited Oscillation Radio Energy Transmission System

对于应用前景广阔的谐振式无线充电,文章提出将高频自激逆变电路作为系统激励源,这在效率、稳定性以及成本等方面有着明显的优势。首先对耦合系统进行分析,得出系统能够谐振的基本条件,然后介绍系统电路构成以及其原理。最后实验结果表明,该装置能够在15-20cm中远距离给小灯泡稳定供电,另外为了进一步优化系统,还对如何提高传输距离和效率进行了研究。该实验装置对谐振无线充电的研究有着重要的价值。

For the resonant wireless charging with broad application prospects,this paper proposes to use the high-frequency self-excited inverter circuit as the system excitation source,which has obvious advantages in efficiency,stability and cost.First of all,the coupling system is analyzed,and the basic conditions under which the system can resonate are obtained,and then the circuit structure and principle of the system are introduced.Finally,the experimental results show that the device can supply stable power to the small light bulb within 15-20cm.In addition,in order to further optimize the system,how to improve the transmission distance and efficiency is also studied.The experimental device is of great value to the research of resonant wireless charging.