Partial Focusing Effect of Indefinite Magnetic Medium in Wireless Power Transfer

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摘要:

对无线电能传输中非正定磁介质部分聚焦效应进行了数值研究.采用印刷电路板掩模蚀刻技术制备平面圆螺旋超材料,在兆赫兹波段,该超材料显示了非正定磁导率.数值模拟了磁偶极子的磁场强度经过空气与非正定磁介质后的空间分布.仿真分析发现,插入非正定磁介质后,在距离磁偶极子一定距离处的观测点,磁场强度得到了很大增强.此研究表明,利用非正定磁介质对倏逝波的部分聚焦效应,可以有效提高磁耦合谐振式无线电能传输系统的近场区磁场强度.

This paper focuses on the simulation study about the focusing effect of indefinite magnetic medium. Using printed circuit board （PCB） to prepare planar circular spirals, the planar circular spirals array displays the indefinite magnetic permeability in MHz frequencies. We simulate the spatial distribution of magnetic-field intensity of a magnetic dipole which has passed through the air and the indefinite magnetic medium. Simulation results demonstrate that the magnetic field intensity of the observation point which is 50cm away from the magnetic dipole is greatly enhanced by inserting an indefinite magnetic media. The results of this study show that transfer efficiency of wireless power transfer system based on magnetic coupling resonance will be improved greatly by inserting indefinite magnetic medium.

作者:

刘凌云杨东平李珊

机构地区:

湖北工业大学电气与电子工程学院太阳能高效利用湖北省协同创新中心

出处:

《betway官方app 学报：自然科学版》 CAS 北大核心 2015年第1期40-43,共4页

基金:

国家自然科学基金(51171061)

关键词:

非正定磁介质平面圆螺旋无线电能传输

indefinite media planar circular spirals wireless power transfer

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