摘要
针对经皮无线供电系统中松耦合的电磁感应供电方式存在的能量传输距离近,传输效率低的问题,分析了一种基于高Q值的谐振式能量传输方式。首先分析了谐振式能量传输的理论模型以及Q值在能量传输效率中的作用;其次对基本经皮感应电路进行改进,通过在驱动和负载之间增加一对谐振线圈,减小信号源内阻以及负载对Q值的影响;最后搭建实验测试装置进行对比实验,采用增加谐振线圈的方式提高了系统Q值,相同传输距离时能量传输效率提高了4倍,传输距离也有了明显改善,证明了该方法的有效性。
An improved resonant energy transfer method based on high Q value was proposed to solve the problem of short wireless power transmission distance and low efficiency in the loose coupling of electromagnetic induction mode of percutaneous wireless power supply system. First, the theoretical model of the resonant energy transfer and the role of Q in energy transfer efficiency were analyzed. Second, in order to reduce the influence of source resistance and load, the basic circuit of percutaneous induction was improved by adding a pair of resonance coil between load coil and power coil. Finally, an experimental test device was set up to build comparative experiment, in which system Q value is increased by adding the resonant coil, and energy transfer efficiency was improved by four times and the transmission distance has also been significantly improved. Therefore, it proves the effectiveness of the method.
出处
《电工电能新技术》
CSCD
北大核心
2012年第4期75-78,91,共5页
Advanced Technology of Electrical Engineering and Energy
基金
天津市自然科学基金重点项目(11JCZDJC1570)
关键词
高Q值
经皮无线供电
磁耦合
谐振
high Q-value
percutaneous wireless power supply
magnetic coupling
resonance
