基于E类放大器的中距离无线能量传输系统

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摘要采用E类放大器设计大功率中距离无线能量传输系统,具有成本低、调试简单、高效等优点。针对大功率E类放大器导通角、LC滤波电路参数和阻抗匹配电路等设计问题进行详细分析,提出大功率E类放大器设计方法。建立四线圈两两耦合磁谐振无线能量传输系统等效电路模型,提出无线能量传输环节等效输入阻抗的计算方法。最后,以开关管损耗最低为目标,器件耐压、输入电压等限制条件为约束,设计并成功搭建无线能量传输系统,传输功率3kW,传输距离22cm,系统效率85%,对无线能量传输系统中大功率E类放大器设计方法进行验证。

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	李均锋
	廖承林
	王丽芳

关键词 ：无线能量传输, E类功率放大器, 大功率, 中距离

Abstract：This paper represents one kind of high-power wireless power transfer (WPT) system with low cost, easy debug and high efficiency. Firstly, conducting angle, LC filter parameters and impedance transformer problem of high-power E-class amplifier are analyzed. Then, equivalent circuit model of magnetic resonance WPT system is established considering four mutual inductive coils. Furthermore, a calculation method of equivalent input impedance is proposed. Finally, aiming at minimizing device power loss and restricting device breakdown and input voltage, a WPT system, which can transfer 3kW power over 22cm with 85% efficiency, is built up to verify the method.

Key words： Wireless power transfer E-class amplifier high power mid-distance

收稿日期: 2013-09-04 出版日期: 2014-11-05

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,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,副研究员,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E类放大器的中距离无线能量传输系统[J]. 电工技术学报, 2014, 29(9): 7-11. Li Junfeng, Liao Chenglin, Wang Lifang. Mid-Distance Wireless Power Transfer System Using E-Class Amplifier. Transactions of China Electrotechnical Society, 2014, 29(9): 7-11.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2014/V29/I9/7

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