磁谐振式无线电能传输系统谐振器的磁场分析

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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.

Key words： keywords：Wireless power transmission resonator magnetic field intensity simulation measurement

Received: 20 September 2012 Published: 12 December 2013

PACS:	TM154
	TM46

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	Huang Xueliang
	Ji Qingjing
	Cao Weijie
	Tan Linlin
	Zhou Yalong

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Huang Xueliang,Ji Qingjing,Cao Weijie等. The Magnetic Field Simulation and Measurement of Resonator in Wireless Power Transmission Based on Magnetic Resonant Coupling[J]. Transactions of China Electrotechnical Society, 2013, 28(1增): 105-109.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2013/V28/I1增/105

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