无线电能传输(wireless power transfer,WPT)技术因其独特的传输优势成为国内外研究的热点.随着研究的深入,现阶段迫切需要提升 WPT系统的输出功率,为此提出了一种基于双频通道的 WPT系统功率提升方法.在能量发射端采用双谐振网络构建双频通道进行谐振补偿,通过其参数配置,可以使 WPT系统在基波与三次谐波频率下均处于谐振状态,从而可以对两个频率下的能量同时进行传输.对系统整体结构和工作原理进行分析,比较了双频通道与单通道在输出功率上的区别,在给定参数下功率由传统单通道的166 W提升到了295 W,提升约78%,效率最高可达到95%.基于系统效率和输出功率给出了系统最优工作点的选择.通过搭建实验平台对理论分析进行验证,实验结果表明,所提 WPT系统输出功率提升方法的优越性与可行性.
Dual-frequency-channel based power boosting method for WPT systems
Wireless power transfer(WPT)technology has become a hotspot of research at home and abroad because of its unique transmission advantages.With the deepening of the research,there is an urgent need to improve the output power of WPT system at this stage,for this reason,this paper proposes a dual-frequency channel-based power boosting method for WPT system.At the power transmitting end,a dual resonant network is used to construct a dual-frequency channel for resonance compensation,and through the configuration of its parameters,the WPT system can be made to be in a resonant state at both the fundamental and the third harmonic frequencies,so that the power can be transmitted at the same time under the two frequencies.The paper analyzes the overall structure and working principle of the system,and compares the difference between the dual-frequency channel and the single channel in terms of output power,and the power is increased from 166 W of the traditional single channel to 295 W under the given parameters,which is an increase of about 78%,and the efficiency can reach up to 95%.The selection of the optimal operating point of the system is given based on the system efficiency and output power.The theoretical analysis is verified by building an experimental platform,and the experimental results show the superiority and feasibility of the output power enhancement method of the WPT system proposed in this paper.
wireless power transferpower boostingharmonic utilizationdual-frequency channels
万方数据
维普
