无线电能传输系统频率分裂现象的研究  

Study on Frequency Splitting in Wireless Power Transfer System

作　　者：李金洋 王英杰[1] 冯建辉 崔橙橙 LI Jinyang;WANG Yingjie;FENG Jianhui;CUI Chengcheng(School of Mechanical&Electronic Engineering,Zhongyuan University ofTechnology,Zhengzhou 450007,China)

机构地区：[1]中原工学院机电学院,河南郑州450007

出　　处：《电器与能效管理技术》2023年第2期53-57,80,共6页Electrical & Energy Management Technology

摘　　要：针对磁耦合谐振式无线电能传输(WPT)系统处于过耦合时固有频率处输出功率降低的问题,结合互感耦合理论并引入失谐因子、耦合因数对简化的WPT系统进行理论分析,得到系统输出功率下降的原因是阻抗失配。采用基于对称T型补偿电路设计的LCC补偿电路进行阻抗匹配,提高输出功率。最后,通过仿真实验验证了补偿电路的有效性,为解决频率分裂问题提供了有效参考。Aiming at the output power decreases of the magnetically-coupled wireless power transfer(WPT)system at the natural frequency in the over-coupled state,combining with the mutual inductance coupling theory and introducing the detuning factor and coupling factor,the theoretical analysis of the simplified WPT system is carried out.It is concluded that the reason for the reduction of the output power of the system is the impedance mismatch.The LCC compensation circuit based on symmetrical T-type compensation circuit is used for impedance matching to improve the output power.Finally,the effectiveness of the compensation circuit is verified by simulation experiments,which provides an effective reference for solving the frequency splitting problem.

关 键 词：无线电能传输 频率分裂 阻抗匹配 最大功率传输 磁耦合谐振 

分 类 号：TM724[电气工程—电力系统及自动化]