一对多无线电能传输理论分析研究  

Theoretical analysis of multi load radio power transmission

作　　者：王迪晟 秦会斌[1] 范翠红 Wang Disheng;Qin Huibin;Fan Cuihong(Institute of New Electronic Devices and Applications,Hangzhou Dianzi University,Hangzhou 310018,China)

机构地区：[1]杭州电子科技大学新型电子器件与应用研究所,浙江杭州310018

出　　处：《电子技术应用》2022年第4期117-121,126,共6页Application of Electronic Technique

基　　金：浙江省科技计划项目(2017C01027)。

摘　　要：磁耦合谐振式无线电能传输具有距离较远、功率大、穿透性强等优点,近年来一对多无线电能传输技术成为无线充电领域的热门研究方向。基于磁耦合谐振式无线电能传输的理论来对一对多无线电能传输系统进行研究,建立电路仿真模型,计算出系统谐振状态下的发射端电流、接收端电流、输出平均功率、电源内阻消耗平均功率、接收端平均功率以及传输效率等数学表达式,并利用MATLAB对模型进行仿真分析。仿真模型通过修改每个接收端回路的耦合系数的比例和另外两个接收端线圈自感的乘积来调节该接收端的功率,可以实现多个接收端的功率分配,并使电能传输效率可达90%以上。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%.

关 键 词：一对多 磁耦合谐振式 无线电能传输 功率分配 

分 类 号：TM724[电气工程—电力系统及自动化]