Research On Wireless Power Generation Device Based On Capacitive Coupled Resonant Power Grid

With the development of productivity,wireless energy transmission technology has made great progress in recent years and has been widely used in the field of electric vehicle charging and mobile phone charging.In order to solve the disadvantages of magnetic field coupled wireless transmission technology in the field of electrical charging,this paper proposes a new capacitive coupled wireless energy transmission method for electric vehicle charging and improves it.This article first to the capacitance coupling circuit principle diagram of wireless energy transmission technology to make analysis,on the basis of the theory of circuit and power electronic technology knowledge,the nature of its important theoretical derivation,deduces a kind of used for electric vehicle charging capacitance coupling type wireless energy transmission circuit topology structure,make a discussion on the energy extraction way,and ultimately determine the energy extraction experiment scheme.This paper proposes a charging scheme for the rotating mechanism,and proposes a chip control method to realize the soft switching function,so as to alleviate the switching loss and electromagnetic interference in the high-frequency inverter module during the operation of the equipment.Secondly,the parameters of ac equivalent resistance and parallel coupling equivalent inductance of the coupling mechanism are determined.Matlab software is used to judge the relationship between output power,frequency and equivalent resistance,proving the importance of tuning,and expounding the output characteristics of the system.In view of the detuning situation,the coupling mechanism is compensated by the method of capacitance switching inductance cutting,and the corresponding circuit is designed.Finally,the design in hardware circuit,DSP platform structures,experimental platform,the running equipment with automatic tuning,booster,make the incandescent lamp work successfully,through the analysis of the incandescent lamp voltage current waveform concluded that namely the capacitance coupling type wireless energy transmission design can complete wireless take on grid electricity purpose,and further puts forward the idea to improve our design.