低功率两线圈的磁共振无线电能传输研究  

Magnetic Resonance Wireless Transmission Power Model Research

作　　者：程杰[1] 王冬青[1] 温超[1] 

机构地区：[1]青岛大学自动化与电气工程学院,山东青岛266071

出　　处：《青岛大学学报（工程技术版）》2017年第1期48-51,共4页Journal of Qingdao University(Engineering & Technology Edition)

基　　金：国家自然科学基金资助项目(61573205);山东省自然科学基金资助项目(ZR2015FM017)

摘　　要：针对电磁感应无线输电存在效率低、传输距离短的问题,本文基于磁共振原理,对低功率两线圈磁共振无线电能传输进行研究。建立了低功率两线圈磁共振无线电能传输系统的等效电路模型,通过等效电路模型推导出了输出功率和输出效率随线圈的频率及距离参数变化的解析表达式。同时,在Matlab/Simulink环境下对共振电路工作过程分别进行了输出功率随线圈频率变化以及输出效率随线圈距离变化的仿真实验。仿真结果表明,当系统频率为2 MHz,线圈距离为2cm时,输出功率和输出效率同时达到最大,表明构建模型的有效性。该等效模型的研究能促进我国在磁共振无线电能传输领域的发展,具有实际应用价值。As the fact that electromagnetic induction wireless transmission efficiency is low and short transmission distance,based on magnetic resonance wireless power transmission（WPT）principle,this paper established a low power two coil magnetic resonance wireless power transmission（WPT）system of the equivalent circuit model under the much study,and the output power and efficiency were deduced with the parameters of distance and frequency.At the same time,working process of the resonant circuit is simulated in the Matlab/Simulink.It is concluded that the output power and performance reach maximum with the effect of frequency 2MHz and coil distance 2cm simulation to prove the model is effective.The equivalent model of the study can promote the development in the field of magnetic resonance at magnetic resonance wireless power transmission in our country,and it has practical application value.

关 键 词：磁共振 无线充电 共振电路 低功率 线圈距离 频率 

分 类 号：TM724[电气工程—电力系统及自动化]