基于线圈回路复阻抗设计实现无线能量传输系统最大效率研究

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摘要目前四线圈结构无线能量传输系统大多采用磁谐振技术,通过调整实际负载与系统最佳负载相匹配实现系统最大效率工作。本文提出一种基于线圈回路复阻抗设计技术,可通过调整线圈回路复阻抗使得系统工作在最大效率状态。首先,对系统效率与各线圈回路复阻抗之间关系进行理论推导,证明基于线圈回路复阻抗设计技术的理论可行性。其次,采用数值仿真方法,分析理论推导与实际系统的差别,计算实际系统设计时线圈回路复阻抗数值,并对比两种最大效率设计方法的系统效率和功率输出性能;最后,搭建四线圈结构无线能量传输实验平台,对基于线圈回路复阻抗设计方法进行实验验证。

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	李均锋
	廖承林
	王丽芳

关键词 ：无线能量传输, 四线圈结构, 最大效率, 复阻抗设计

Abstract：Recently, the magnetic resonance coupling technology is used in wireless power transfer system with four coils structure, and the actual load is optimized to match the optimum load to achieve the maximum efficiency. In this paper, one method to achieve the maximum efficiency is represented based on loop circuit complex impedance designing. Firstly, the relationship between system efficiency and complex impedance of coils loop is theoretical derived using simplified equivalent circuit theory. Then, the simulation model is established to find the different between simplified theory model and actual system model, to calculate the complex impendence value in actual system, and to compare the performance of two different methods. Finally, a wireless power transfer system with four coils is built up to verify the method.

Key words： Wireless power transfer four coils structure maximum efficiency complex impedance design

收稿日期: 2013-11-06 出版日期: 2015-04-10

PACS:

TM724

基金资助:北京市科技计划资助项目（D121100004512001）

作者简介: 李均锋男,1987年生,在读博士研究生,研究方向为无线电能传输技术。廖承林男,1973年生,研究员,硕士生导师,本文通讯作者。研究方向为无线电能传输技术。

引用本文:

李均锋,廖承林,王丽芳. 基于线圈回路复阻抗设计实现无线能量传输系统最大效率研究[J]. 电工技术学报, 2015, 30(6): 99-105. Li Junfeng,Liao Chenglin,Wang Lifang. Research on Maximum Efficiency of Wireless Power Transfer System Based on Loop Circuit Complex Impedance Design. Transactions of China Electrotechnical Society, 2015, 30(6): 99-105.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2015/V30/I6/99

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