摘要
针对多负载磁谐振无线电能传输系统中接收线圈间交叉耦合对系统传输特性的影响问题,采用一种理论计算结合数值仿真的方法进行分析。首先利用等效电路模型推导出双负载工况下输出功率、传输效率的表达式;然后采用Maxwell仿真获得不同线圈布局下偏移距离与互感的关系;采用理论计算方法,讨论在不同偏移和负载下交叉耦合对系统传输特性的影响;最后搭建实验样机验证了理论结果。结果表明,多负载系统中通过合理的位置布局及负载阻抗参数设计,既可抑制交叉耦合的不利影响,也可利用其提升系统传输性能。
In a magnetic coupled resonant wireless power transmission(MCR-WPT)system with multiple receiving coils,the cross-coupling between receiving coils may affect performance of the system.A theoretical calculation and numerical simulation method is used for the analysis.The equivalent circuit model is used to derive the relationship between transfer power,efficiency and load impedance,mutual inductance.The mutual inductances between coils at typical locations are obtained by the Maxwell simulation.The theoretical analysis in the cases of different offset distances and load resistances is realized by numerical simulation method in view of cross-coupling.Finally,an experimental prototype is built to verify the theoretical analysis and simulation results.The results show that the adverse effects of cross coupling can be suppressed and the transmission performance of the system can be improved by reasonable location layout and load impedance parameter design in multi-load system.
作者
黄东晓
HUANG Dongxiao(Quanzhou Institute of Equipment Manufacturing,Haixi Institutes,Chinese Academy of Sciences,Quanzhou,Fujian 362000;Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350000)
出处
《电气技术》
2023年第4期9-14,21,共7页
Electrical Engineering
关键词
多负载无线电能传输
交叉耦合
传输特性
数值仿真
轴向偏移
multi-load wireless power transfer
cross-coupling
transmission characteristics
nume-rical simulation
axial offset
