Research on optimal receiver radius of wireless power transfer system based on BP neural network

In order to improve transmission performance of Wireless Power Transfer (WPT) system, this paper proposes the concept of optimal receiver radius. The planar square transmitter coil WPT system is studied to explore the variation rule of optimal receiver radius with the parameters of WPT system. The key parameters that affect optimal radius are transmitter coil turns, turn spacing, side length and transmission distance. On this basis, by introducing BP neural network to learn the variation rule, the accurate prediction of optimal receiver radius under different parameters is realized. Finally, the finite element simulation proves the existence of optimal receiver radius and the accuracy of the prediction value.