A system design of wireless energy transfer based on resonant coupling

Distance and efficiency have become the development bottlenecks in the field of wireless energy transfer for many years. Until now, this problem can be relieved by resonant coupling technology. Depending on analyzing the equivalent circuit mode of emission and receiving coils in high frequency, this paper found that when resonant coupling occurred between emission and receiving coils, transmission distance and efficiency can be improved largely. And then, such a system was designed in this passage in which the rated transmission power is 30W and the transmission frequency is 1MHz. Eventually, experiment validated this design and had a good consistence with the theory calculations.