Research On The Multi-directional Transmission Coil Of Wireless Power Transfer Based On Magnetically-coupled Resonant

In recent years, the technology of magnetic resonant coupling wireless power transmission which stimulates the development of wireless power transmission technology. magnetic resonant coupling wireless power transmission is more efficient to achieve the Middle-distance wireless power transmission compared to the wireless power transmission and more safe and has less radiation compared to the radiation of wireless power transmission, It will play an important role in the develop- ment of human science and technology with a very broad application prospects and will bring great changes to people’s life.The research based on the multi transmission coil of the Magnetic resonance coupling wireless power mainly includes the following aspects:(1) It introduces the radio transmission device, transmission principle and the principle of resonant coupling, hence expounds the impact of several important parameters on the transmission performance of magnetic resonance coupling radio.(2) Through the analysis of traditional harmonic equivalent circuit, the optimum resonance frequency system transmission power and the transmission efficiency was achieved. Analyzing the basic characteristic of the magnetic resonance coupling radio transmission.(3) Receiving coil changing relative position does not meet the condition of maximum efficiency. Considering the existing disadvantages of the traditional two coil structure, it presented using 3 d coil for radio transmission which Can make electricity travels in many directions Transmission power and transmission efficiency parameters were calculated under the structure.(4) Wireless power transmission system can successfully lit 4 different directions LED bulbs, experimental and simulation results show the characteristics of 3D coil can multi-directional transmission of electrical energy.