中图分类号： TM724 文献标识码： A DOI：10.16157/j.issn.0258-7998.211948 中文引用格式： 王迪晟，秦会斌，范翠红. 一对多无线电能传输理论分析研究[J].电子技术应用，2022，48(4)：117-121，126. 英文引用格式： Wang Disheng，Qin Huibin，Fan Cuihong. Theoretical analysis of multi load radio power transmission[J]. Application of Electronic Technique，2022，48(4)：117-121，126.
Theoretical analysis of multi load radio power transmission
Wang Disheng，Qin Huibin，Fan Cuihong
Institute of New Electronic Devices and Applications，Hangzhou Dianzi University，Hangzhou 310018，China
Abstract： Magnetic coupling resonant wireless power transmission has the advantages of long distance, large power and strong penetration. In recent years, multi radio power transmission technology has become a hot research direction in the field of wireless charging. Based on the theory of magnetic coupling resonance radio power transmission, this paper studies the one to many radio power transmission system, establishes the circuit simulation model, calculates the mathematical expressions of the transmitter current, the receiver current, the average output power, the average power of the power internal resistance consumption, the average power of the receiver and the transmission efficiency under the resonant state of the system, and uses MATLAB to simulate the model and analyze. The simulation model adjusts the power of the receiver by modifying the ratio of the coupling coefficient of each receiver loop and the product of the coil self-inductance of the other two receivers. The power distribution of multiple receivers can be realized, and the power transmission efficiency can reach more than 90%.
Key words : multi radio；magnetic resonance coupling；radio power transmission；power distribution