Transfer efficiency maximum frequency of wireless power transfer via magnetic resonance coupling

被引：0

作者：

Tang, Zhi-De ^{[1
]}

Xu, Yang-Yang ^{[1
]}

Zhao, Mao ^{[1
]}

Peng, Yi-Ling ^{[1
]}

机构：

[1] State Key Laboratory of Power Transfer Equipment & System Security and New Technology, Chongqing University, Chongqing

来源：

Dianji yu Kongzhi Xuebao/Electric Machines and Control | 2015年 / 19卷 / 03期

关键词：

Magnetic resonant coupling; Resonant frequency; Transfer efficiency; Transfer efficiency maximum frequency; Wireless power transfer;

D O I：

10.15938/j.emc.2015.03.002

中图分类号：

学科分类号：

摘要：

By applying lumped parameter circuit theory and coupled mode theory, the efficiency of wireless power transfer system via magnetic resonant coupling was researched, and the concept of transfer efficiency maximum frequency was proposed when transfer efficiency is maximum. Influence of system parameters and load on transfer efficiency maximum frequency and transfer efficiency were analyzed. Two coils transfer system was set up, and the relationship between the frequency and transfer efficiency, the relationship between load and transfer efficiency maximum frequency and between load and transfer efficiency were studied, and the relationship between distance and transfer efficiency maximum frequency and between distance and transfer efficiency were carried out. Experiments and simulation prove that: there is a transfer efficiency maximum frequency in wireless power transfer system; and this transfer efficiency maximum frequency is proportional to the load and inversely proportional to mutual inductance approximately; transfer efficiency maximum frequency increases with the increase of distance; when the system work in transfer efficiency maximum frequency and the load resistance is much greater than the coil resistance, the transfer efficiency of wireless power transfer system is maximum. ©, 2015, Editorial Department of Electric Machines and Control. All right reserved.

引用

页码：8 / 13

页数：5

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