Abstract：For a wireless power transmission in high power, as its high voltage and current, the magnetic field intensity should be considered. Here, firstly, from the angle of equivalent circuit, the phase angle relationship between transmitting terminal and receiving end was discussed. Secondly, we supposed that the spiral coil is approximate equivalent with superposition of single circular,and then the analytic magnetic field expression of spiral pipe was obtained basing on getting the magnetic field of single circular. Finally, this paper used the electromagnetic finite element simulation to get the magnetic field distribution in the space. The results show that the magnetic field is almost in the space between the coils, and it attenuates faster as the distance becoming longer. In the end, the magnetic field of a working system was measured, the results show that when the phases of currents in the coils differ 90°, the system get resonant. The measurements of the magnetic field and the results of the simulation are in good conformity.
黄学良, 吉青晶, 曹伟杰, 谭林林, 周亚龙. 磁谐振式无线电能传输系统谐振器的磁场分析[J]. 电工技术学报, 2013, 28(1增): 105-109.
Huang Xueliang, Ji Qingjing, Cao Weijie, Tan Linlin, Zhou Yalong. The Magnetic Field Simulation and Measurement of Resonator in Wireless Power Transmission Based on Magnetic Resonant Coupling. Transactions of China Electrotechnical Society, 2013, 28(1增): 105-109.
[1] Boys J T, Green A W. Inductively coupled power transmission concept-design and application[J]. IPENZ Trans, 1995, 22(1): 1-9. [2] Kurs A, Karalis A, Moffatt R, et al. Wireless power transfer via strongly coupled magnetic resonances[J]. Science Express, 2007, 317(5834): 83-86. [3] 曹玲玲, 陈乾宏. 电动汽车高效率无线供电技术的研究进展[C]. 中国电工技术学会电力电子学会第十二届学术年会. 2010: 1-8. [4] 王敬苗. 用于无线能量传输的高频电流测量技术研究[D]. 哈尔滨: 哈尔滨工业大学, 2010. [5] 曾令宏, 张之翔. 圆环电流的磁场以及两共轴圆环电流之间的相互作用力[J]. 大学物理, 2002, 21(9): 14-16. Zeng Linghong, Zhang Zhixiang. The magnetic field of a circular current loop and the interaction between two circular current loops[J]. College Physics, 2002, 21(9): 14-16. [6] 谭林林, 黄学良, 黄辉, 等. 基于频率控制的磁耦合共振式无线电力传输系统传输效率优化控制[J]. 中国科学, 2011, 41(7): 913-919. Tan Linlin, Huang Xueliang, Huang Hui, et al. Transfer efficiency optimal control of magnetic resonance coupled system of wireless power transfer based on frequency control[J]. Science China, 2011, 41(7): 913-919. [7] 闻印红, 周克生, 崔勇, 等. 电磁场与电磁兼容[M]. 北京: 科学出版社, 2010. [8] 威廉H, 约翰A. 工程电磁场[M]. 赵彦珍, 译. 西安: 西安交通大学出版社, 2009. [9] GB8702—1988, 中华人民共和国国家标准: 电磁辐射防护规定[S]. [10] 强浩, 黄学良, 谭林林, 等. 基于动态调谐实感应耦合无电能传输系统的最大功率传输[J]. 中国科学: 技术科学, 2012, 42(7): 830-837. Qiang Hao, Huang Xueliang, Tan Linlin, et al. Achieving maximum power transfer of inductively coupled wireless power transfer system based on dynamic tuning control[J]. Science China Technology Science, 2012, 42(7): 830-837.
2013, Vol. 28 
