Analysis of transmission characteristics of multi-loads wireless power transfer system with cross-coupling
HUANG Dongxiao1,2
1. Quanzhou Institute of Equipment Manufacturing, Haixi Institutes, Chinese Academy of Sciences, Quanzhou, Fujian 362000; 2. Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350000
Abstract：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.
黄东晓. 计及交叉耦合的多负载磁耦合无线电能传输系统特性分析[J]. 电气技术, 2023, 24(4): 9-14.
HUANG Dongxiao. Analysis of transmission characteristics of multi-loads wireless power transfer system with cross-coupling. Electrical Engineering, 2023, 24(4): 9-14.
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2023, Vol. 24 
