Abstract：Due to advantages of middle transmission distance, higher efficiency，wireless power transmission system via magnetic resonance is widely studied. In this paper, expression of the maximum transmission efficiency is deduced based on the mutual coupling model of wireless power transmission system via magnetic resonance. And the three elements which determine if the system can obtain the maximum transmission efficiency is pointed out, including the selection of operating frequency, power matching, load matching. By introducing the concept of strong coupling coefficient, it is derived that the strong coupling coefficient is the key physical quantity that determine the maximum transmission efficiency. A prototype is designed and created, and the correctness of the aforementioned analyses is verified.
卢文成， 丘小辉， 毛行奎. 磁谐振无线电能传输系统的最大效率分析[J]. 电气技术, 2015, 16(04): 14-17.
Lu Wencheng Qiu Xiaohui Mao Xingkui. Analysis on Maximum Efficiency of Wireless Power Transfer via Magnetic Resonance. Electrical Engineering, 2015, 16(04): 14-17.
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2015, Vol. 16 
