Optimization of synchronous wireless energy information transmission system based on separated channels
Aiming at the problems of low information transmission rate,large energy transmission loss and complex system design method of single-channel energy information parallel transmission system,this paper designs a new scheme for the separation design of energy transmission system and information transmission system by using a new multi-coil magnetic coupling structure based on the theory of mutual inductance coupling on the basis of existing re-search.As a channel for power and information transmission,the multi-coil magnetic coupling mechanism can transmit energy and signals of different frequencies and amplitudes.The digital information is loaded into the infor-mation transmission loop after amplitude shift keying(ASK)modulation,and real-time,two-way and high-rate transmission of information is realized without affecting energy transmission.Through the finite element analysis software,the magnetic field characteristics of the designed magnetic coupling mechanism are analyzed,the simula-tion software is used to analyze the changes of key electrical parameters of the energy transmission system and the interference of power transmission on information transmission,to determine the feasibility of the proposed scheme,and finally to build an experimental platform to verify the correctness of the proposed scheme.Under the condition that the energy transmission frequency is 100 kHz,the forward information carrier frequency is 13.81 MHz,and the reverse information carrier frequency is 19.23 MHz,the energy transmission efficiency of 89.35%,the forward information transmission rate is 428.9 kbps,and the reverse information transmission rate is 599.9 kbps in parallel and bidirectional.
wireless power transferparallel transmission of energy informationmagnetic core structuremagnetic coupling mechanism
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