工矿自动化2018，Vol.44Issue(3)：91-96,6.DOI:10.13272/j.issn.1671-251x.2017090019
三线圈磁耦合谐振式无线电能传输系统频率特性分析
Analysis of frequency characteristics of three-coil magnetic coupling resonant wireless power transmission system
摘要
Abstract
An equivalent circuit model of three-coil magnetic coupling resonant wireless power transmission system was built,and formulas of system transmission power and transmission efficiency were deduced.Coupling factors relation with the maximum system transmission power was obtained under critical coupling state,and relationship expression between coupling factor and frequency splitting point was given.Frequency characteristics of the system were analyzed.The theoretical analysis results show that there is frequency splitting phenomenon in the system under overcoupling state with three frequency splitting points;the system only resonates at inherent resonant frequency under critical coupling state and undercoupling state;whether there is frequency splitting phenomenon or not,the system resonates at inherent resonant frequency,and transmission power of the system reaches the maximum.The simulation and experimental results verify correctness of the theoretical analysis.关键词
无线电能传输/磁耦合谐振/三线圈/频率特性/频率分裂/谐振频率Key words
wireless power transmission/magnetic coupling resonance/three-coil/frequency characteristic/frequency splitting/resonant frequency分类
矿业与冶金引用本文复制引用
李新恒,龚立娇,冯力,孙翔宇,李阳,李辉..三线圈磁耦合谐振式无线电能传输系统频率特性分析[J].工矿自动化,2018,44(3):91-96,6.基金项目
国家自然科学基金资助项目(51675354). （51675354）
