电力系统自动化2017，Vol.41Issue(2)：21-27,7.DOI:10.7500/AEPS20161008010
磁耦合谐振式无线电能传输系统频率分裂抑制方法
A Method of Preventing Frequency Splitting in Magnetic Coupling Resonant Wireless Power Transfer System
摘要
Abstract
When the wireless power transfer (WPT) system operates in an over-coupled state,the efficiency becomes low because frequency split phenomenon occurs.The expression for the relationship among the efficiency,the input impedance and the operating frequency is derived by the equivalent circuit theory(ECT).Frequency splitting is analyzed and the effects of key parameters on frequency splitting and efficiency are obtained.Then a method of adj usting the parameters is proposed.The L-type impedance matching network is used to adjust the equivalent load resistor.Frequency splitting phenomenon can be suppressed and the efficiency can be improved by the proposed method.Finally,a magnetic coupling resonant WPT system is designed and created.Simulation and experimental results have verified the validity of the theory.关键词
频率分裂/参数匹配/无线电能传输/L型阻抗匹配网络Key words
frequency splitting/parameters matching/wireless power transfer (WPT)/L-type impedance matching network引用本文复制引用
李中启,黄守道,易吉良,李军军..磁耦合谐振式无线电能传输系统频率分裂抑制方法[J].电力系统自动化,2017,41(2):21-27,7.基金项目
国家自然科学基金资助项目(61104088),湖南省自然科学基金与常德市联合资助项目(13JJ9023)。This work is supported by National Natural Science Foundation of China(No.61104088)and Hunan Provincial Natural Science Foundation of China(No.13JJ9023) （61104088）
