带E类功放的磁耦合谐振无线输电系统源线圈优化

发布时间：2018-05-06 14:59

本文选题：磁耦合 + 无线输电　；参考：《电工技术学报》2017年10期

【摘要】：首先为磁耦合谐振式无线输电系统设计了一款E类功放作为系统输入端电源。鉴于E类功放性能易受负载参数影响,通过优化无线输电系统源线圈结构来降低因E类功放特性造成的系统性能下降。提出了三类源线圈结构,在多负载情况下分别测试负载两端电压变化情况,对比研究各结构下负载间耦合情况对负载电压的影响和各结构下系统的传输效率。研究发现多源线圈单谐振结构能通过利用负载间的耦合来降低由磁场分布引起的负载电压变化。而在E类功放下,串联型分立的多源线圈多谐振结构易造成系统性能下降,负载间耦合对负载影响也十分明显。
[Abstract]:First, a class E power amplifier is designed for the magnetic coupling resonant wireless transmission system as the input power supply of the system. In view of the fact that the performance of class E power amplifier is easily affected by load parameters, the system performance degradation caused by class E power amplifier is reduced by optimizing the source coil structure of wireless transmission system. In this paper, three types of source coil structures are proposed to test the voltage variation at both ends of the load under multiple loads, and the effect of coupling between the loads on the load voltage and the transmission efficiency of the system under each structure are compared. It is found that the single resonance structure of multi-source coils can reduce the load voltage change caused by the magnetic field distribution by using the coupling between the loads. Under class E power amplifier, series discrete multi-source coils and multi-resonance structures can easily cause the performance of the system to decline, and the coupling between loads has a very obvious effect on the load.
【作者单位】：河北大学电子信息工程学院;北京理工大学自动化学院;河北大学工商学院;
【基金】：国家自然科学基金资助项目(51307007,51577133,51677177)
【分类号】：TM724

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