摘要
针对磁耦合无线电能传输(MC-WPT)系统各电参数对系统共振点的分布影响问题,综合考虑MC-WPT系统中所有电参数,包括各振荡电路的固有频率、所有的互感及电阻,基于复模态分析理论对MC-WPT系统进行共振机理建模分析,推导得到MC-WPT系统共振频率及共振点功率的解析表达式。在此基础上,深入分析MC-WPT系统的共振频率及共振点功率随传输距离及负载变化的分布特性,以此解释频率分裂等现象的物理原理,为后续优化及控制MC-WPT系统的共振点奠定相应的理论基础。
In order to determine the influence of electric parameters on the resonant points of magnetic coupling wireless power transfer(MC-WPT)systems,all electric parameters in MC-WPT systems,including the natural frequency of each circuit,mutual inductances and resistances,were comprehensively considered.The MC-WPT system was modeled and analyzed by using complex modal theory,the analytical expressions of resonant frequencies and corresponding output powers of resonant points were accordingly derived.Then the distribution characteristics of resonant frequencies and corresponding powers at resonant points that vary with transfer distance and load resistance were deeply analyzed,and the physical interpretation of frequency splitting was deduced.The analysis results provide a theoretical basis for further study on the optimization and control of resonant points.
作者
廖志娟
孙跃
叶兆虹
唐春森
葛学健
Liao Zhijuan;Sun Yue;Ye Zhaohong;Tang Chunsen;Ge Xuejian(College of Automation Chongqing University,Chongqing 400044,China;Key Laboratory of Complex System Safety and Control Ministry of Education Chongqing University,Chongqing 400044,China)
出处
《电工技术学报》
EI
CSCD
北大核心
2020年第2期215-224,共10页
Transactions of China Electrotechnical Society
基金
国家自然科学基金（61573074）
国家电网（SGSDQD00FCJS1800705）资助项目
关键词
无线电能传输
磁耦合
共振
模态分析
分布特性
Wireless power transfer
magnetic coupling
resonance mechanism
modal analysis
distribution characteristic
