磁耦合谐振式无线电能传输系统频率特性分析  

Characteristic Analysis of Frequency Model of Wireless Power Transfer Via Magnetic Resonance Coupling

作　　者：刘喜声 马殿光[1] 唐厚君[1] 

机构地区：[1]上海交通大学,上海200240

出　　处：《电力电子技术》2014年第11期1-2,共2页Power Electronics

基　　金：国家自然科学基金(51277120)~~

摘　　要：基于串串模型,建立了无线电能传输系统的互感模型,通过电路分析得到电压增益的频率特性曲线。通过建立Matlab仿真模型,研究电压增益的频率分裂现象,分析在过励磁、临界励磁、欠励磁3种状态下传输效率的变化情况,得到无线电能传输系统有效传输距离的定义,在该距离内,传输效率衰减不明显。设计制作了无线充电平台,测量3种励磁状态下的电压增益频率特性曲线,验证了互感模型及有效传输距离的正确性。Mutual inductance model of wireless power transfer system based on series-series model is established and the voltage transfer function is proposed via the circuit analysis.By Matlab calculation, the frequency split of the volt- age gain is studied and the trends of efficiency in over-coupled, critical-coupled, under-coupled state are analyzed.Then the definition of effective-transfer distance is proposed.A simple wireless charging platform is designed,which demon- strate the accuracy of the model by experimental results.

关 键 词：无线电能传输 频率分裂 有效传输距离 

分 类 号：V242.3[航空宇航科学与技术—飞行器设计]