Transmission Characteristics Analysis Of Magnetic Resonance Wireless Power Transmission Technology

Wireless power transmission technology is a power transmission mode without medium in space.This technology can be widely used in portable power equipment and electrical equipment in some special occasions,it can provide more flexible and convenient electric energy for the equipment.This paper studies the transmission characteristics from the various parameters of the system.The main contents of this paper are as follows: This paper introduces the principle and classification of common wireless power transmission technology.This advantages and disadvantages of different transmission methods are compared.Magnetically-Coupled Resonant Wireless Power Transfer mode is adopted.In the composition of the system,the resonant circuit is an important part of magnetic coupling wireless transmission technology.Building circuit model based on circuit theory to deduce the model formula of the primary circuit in the resonant state of the system.According to the formula,the resonant circuit topology suitable for the system is selected.On this basis,the parameters of the system are calculated.The influence of various parameters on the transmission characteristics is summarized by using MATLAB software.Combining with the above analysis results,the experimental model is designed.The trend of the data collected by the experimental model is consistent with the existing theoretical results.And the correctness of the above theory is verified.In order to further improve the transmission performance of the system,the phase locked loop control technology is adopted to make the frequency of the switch tube follow the change of the receiving winding.This technology can stabilize the system running state.Design of experimental simulation model using Simulink module.By changing the transmission distance,the whole system is simulated and analyzed.The simulation results show that the transmission efficiency of the system is higher than the experimental results.At the end of the paper,the method of further improving the transmission distance is proposed.And the future work of the wireless power transmission technology is summarized.