Study on frequency characteristics of wireless power transmission system based on magnetic coupling resonance

2017 International Conference on New Energy and Future Energy System

Liang, L.H.^1 ; Liu, Z.Z.^1 ; Hou, Y.J.^2 ; Zeng, H.^1 ; Yue, Z.K.^1 ; Cui, S.^1

School of Electrical Engineering, Shandong University, Shandong Province Jinan

250014, China^1

Energy Research Institute, Shandong Academy of Sciences, Shandong Province Jinan

250061, China^2

关键词: Circuit modeling;    Coupling resonance;    Frequency characteristic;    Frequency splittings;    Power regulation;    Wireless charging system;    Wireless energy transmission;    Wireless power transmission systems;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/93/1/012063/pdf
DOI  :  10.1088/1755-1315/93/1/012063

来源: IOP

【 摘 要 】

In order to study the frequency characteristics of the wireless energy transmission system based on the magnetic coupling resonance, a circuit model based on the magnetic coupling resonant wireless energy transmission system is established. The influence of the load on the frequency characteristics of the wireless power transmission system is analysed. The circuit coupling theory is used to derive the minimum load required to suppress frequency splitting. Simulation and experimental results verify that when the load size is lower than a certain value, the system will appear frequency splitting, increasing the load size can effectively suppress the frequency splitting phenomenon. The power regulation scheme of the wireless charging system based on magnetic coupling resonance is given. This study provides a theoretical basis for load selection and power regulation of wireless power transmission systems.