Effect of Intercoil Coupling of Submunitions on Wireless Transmission Efficiency
In the wireless energy transmission system of submunitions,there is the influence of coupling between coils on the transmission efficiency of the system.By establishing a parallel resonant wireless energy transmission system model,the coupling in-fluence between bullet coils on the transmission efficiency of the system is analyzed with the minimal coupling between bullet coils,and the frequency condition of bullet coils is obtained at the maximum transmission efficiency.Finally,the influence of the bullet coil frequency offset direction and coil coupling on the transmission efficiency of the system is verified by the experiments.The results show that when the maximum transmission efficiency is reached,the frequency of the bullet coils is higher than the initial resonant frequency.With the large distance between the bullet coil and the mother round coil,the multiple mother round coils is used to trans-mit the energy.And the maximum transmission efficiency of the system can be improved by reducing the coil distance between the bullet and the mother round coils.
one-to-manywireless energy transmissionparallel resonancetransfer efficiencyelectromagnetic coupling
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