电场耦合式无线电能传输频率分裂特性分析  

Frequency Splitting Characteristics Analysis of Electrical-Field Coupled Wireless Power Transfer

作　　者：杨锐 孙岩洲[1] 余江华 张蒙飞 韦延方[1] YANG Rui;SUN Yanzhou;YU Jianghua;ZHANG Mengfei;WEI Yanfang(School of Electrical Engineering and Automation,Henan Polytechnic University,Jiaozuo 454000,China;Wuhu County Power Supply Company,State Grid Anhui Electric Power Co., Ltd, Wuhu 241000,China)

机构地区：[1]河南理工大学电气工程与自动化学院,河南焦作454000 [2]国网安徽省电力有限公司芜湖县供电公司,安徽芜湖241000

出　　处：《电子科技》2022年第6期48-53,共6页Electronic Science and Technology

基　　金：国家自然科学基金(61703144)。

摘　　要：针对无线电能传输存在的频率分裂现象以及效率低的问题,文中以双侧LCLC补偿拓扑结构的电场耦合型传能系统作为研究对象,通过系统建模分析易变参数对系统输出的影响规律。利用电路理论推导出系统效率与重要参数之间的关系式,运用MATLAB仿真软件对系统效率进行详细的分析,并采用实验验证了仿真结果的正确性。结果表明,将耦合机构的电容值调到频分点以下可以避免系统出现频率分裂,而固定耦合极板的相对位置,通过把系统的频率调大到效率关键点,可以提高系统效率,系统的最佳效率可达89.4%。In order to solve the problems of frequency splitting and low efficiency in wireless power transfer system,the electrical-field coupled wireless power transfer system with double-side LCLC compensation topology is taken as the research object in this study.The effect laws of variable parameters on the system output are analyzed by system modeling.The relationship between system efficiency and the important parameters is derived using the circuit theory,and the system efficiency is analyzed in detail using MATLAB simulation software.The correctness of simulation results are verified by experiments.The results show that adjusting the capacitance value of the coupling mechanism below the frequency division point can avoid frequency splitting in the system,while fixing the relative position of the coupling plates can improve the system efficiency by increasing the frequency of the system to the critical point of efficiency,and the best efficiency of the system can reach 89.4%.

关 键 词：电场耦合 无线电能传输 对称补偿 恒流特性 耦合机构 参数变化 频率分裂 传输效率 

分 类 号：TN801[电子电信—信息与通信工程] TN99