Study On The Transmission Characteristics Of Magnetic Coupled Resonant Wireless Power Transmission

Wireless power transmission system via magnetic resonance coupling displays its superiority in its higher efficiency,longer range,greater power output and Medium dependent small.It has a broad application in electric vehicles,aerospace,portable equipment,medical equipment and coal mine,chemical industry,water inferior special occasions.It also is the focus of the research on the Department of internal medicine in the world.This paper first outlines the development of radio energy transmission and it is widely used in many fields,and briefly introduces the development of several radio transmission modes and magnetic coupling resonance type radio transmission at home and abroad.Secondly,by theoretical modeling and simulation,the working principle of magnetic coupling resonance type radio transmission technology is expounded.The transmission characteristics of the two coil model of the magnetic coupling resonance radio are analyzed,and the transmission characteristics of the four coil models are Series-Series,Series-Parallel,Parallel-Series and Parallel-Parallel.Four types of model for magnetically coupled resonant wireless power transmission system has been founded according to whether or not the excitation coil and the transmitting coil,the receiving coil and the load coil are resonant,the simulation results show that with the heavy load,the high efficiency can be reached and the output power is maximum when the excitation coil and the transmitting coil is resonant and the receiving coil and load coil is not.Also introduces the influence of the magnetic coupling resonance type radio transmitting resistive load,inductive load and capacitive load on the system characteristics.Finally,That electric bicycle battery charging as a specific goal,the completion of the overall hardware design of the radio transmission system,including high frequency power supply design,coil optimization design and component selection,The PSpice integrated simulation model of electric vehicle battery charging is established,and its feasibility is verified.