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。
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.
出处
《电工技术学报》
EI
CSCD
北大核心
2014年第9期7-11,共5页
Transactions of China Electrotechnical Society
基金
北京市科技计划资助项目(D121100004512001)
