Multi-relay Beamforming And Optimal Placement Algorithm Based On Magnetic Resonant Wireless Power Transfer

Magnetic resonant wireless power transfer technology is an invention that can help electrical appliances break through the constraints of cable and improve the flexibility.Wireless transfer power,efficiency and distance are the performance indicators of wireless power transfer systems.Relays can improve the performance of wireless power transfer systems.Meanwhile,wireless power transfer systems can also use beamforming algorithms for resource allocation and optimal placement algorithms for system set-up to improve performance.However,these three methods for improving the performance of wireless transfer systems are almost all developed individually.The topic of this paper is to improve the performance of magnetic resonant multi-relay wireless power transfer system from two perspectives: beamforming and optimal placement algorithm.On complex magnetic resonance relay wireless energy transmission system of the real scene,this paper designs the reasonable mathematical model,propose the multirelay beamforming algorithm to process the data in the mathematical model,gets the induction of relation between each device in the system to construct the constrained optimization problem,and solve the optimal solution to maximize the resource utilization of the system.The performance of the wireless power transfer system using the multirelay beamforming algorithm compare that using other traditional algorithms,which can verify the gain effect of the multi-relay beamforming algorithm.The multi-relay optimization placement algorithm divides the wireless power transfer system into transfer part,relay part,and a receiver,and creates a stack that stores various data.The algorithm obtains performance indicators in the system under various circumstances of the changing distance between the planes of each part,updates the data stack in real time,compares the data in the stack,and replaces or updates various data according to the rules designed in the algorithm.Via iteration steps of a finite number,the final output of the algorithm is the optimal placement of the relay part of the wireless power transfer system and the maximum system transfer power in this system relay set-up.The performance of the wireless power transfer system using the multi-relay beamforming and optimal placement algorithm at the same time is compared with the wireless power transfer system using the multi-relay beamforming algorithm solely,so as to verify the gain effect of the multi-relay optimal placement algorithm.The multi-relay beamforming and optimal placement algorithm based on magnetic resonant wireless power transfer technology proposed in this paper can perform better in transfer power,transfer efficiency,and transfer distance by comparing with other related algorithms on a reasonably designed system model.