Abstract：Wireless power transfer technology with coupled magnetic resonances is an interesting technology based on electromagnetic induction law to realize energy transmission via air distance. The magnetic coupling structure is the bottleneck of wireless power transmission system to achieve high efficiency, large capacity and stable transmission of electric power, wherein the coupling is limited. Its performance characteristics are presented. The space two parallel annular magnetic coupling coils electromagnetic analysis is given in the paper. And when the receiving coil radius is 0.25m, lift-off height of 0.2m magnetic structures are optimized, including the transmitting coil size, the size, thickness and the shape of cores structural parameters optimization.
[1] GREEN A W, BOYS J G. 10kHz Inductively Coupled Power Transfer Concept and Control[A]. IEE PEVD Conference 1994, London[C]. 1994: 399, 694-699. [2] BOYS J T, COVIC G A, GREEN A W. Stability and control of inductively coupled po transfer systems [J]. IEEE Proc. Electrical Power Application, 2000, 147(1): 37-43. [3] 韩腾,卓放,刘涛,等. 可分离变压器实现的非接触电能传输系统研究[J]. 电力电子技术, 2004, 38(5): 28-29. [4] HU A P. Selected resonant converters for IPT power supplies[D]. Auckland: The University of Auck- land, 2001. [5] 陈红新,刘建,蒋世全,等. 串-串补偿松耦合全桥谐振变换器[J]. 电力电子技术, 2009, 43(10): 73-76. [6] 孙跃. 非接触电能传输系统的频率稳定性研究[J]. 电工技术学报, 2005, 20(11): 56-59. [7] 夏晨阳. 感应耦合电能传输系统能效特性的分析与[7] 优化研究[D]. 重庆: 重庆大学, 2010. [8] 刘修泉,曾照瑞,黄平. 空心线圈电感的计算与实验分析[J]. 工程设计学报, 2008, 15(2).
2014, Vol. 15 
