Research On Wireless Power Transmission Technology Based On Electromagnetic Resonant Coupling

Energy issues have become increasingly prominent, how to use of existing energysources effective, has cause aroused widespread concern.Wireless power transmissiontechnology as a new type of power transmission technology, is one important way toachieve efficient use of energy.Electromagnetic resonance coupling wireless power transmission technology is thewireless transmission of electrical energy using magnetic resonance coupling, topics at theforefront of the field of power transmission, it is a new technology. Electromagneticresonant coupling wireless power transmission technology is one of the great potentialwireless power transmission technology, it can efficiently and flexibility to achieve thewireless transmission of electrical energy. Electromagnetic resonant coupling wirelesspower transmission technology as a new mode of energy transmission, it has a veryimportant value and development prospects and it will have a inestimable impact onenergy supply and people’s lives. It have a important research value.This paper mainly studies the following aspects:(1) Analysis the theory of electromagnetic resonant coupling wireless powertransmission. Analysis of the working principle of the electromagnetic resonant couplingwireless power transmission system, the electromagnetic field is divided into the magneticfield of the near field and far magnetic field, analysis derived system transmission rangemagnetic fields in the near zone. It considers the two coils of the systems in the samefrequency will have self-resonant, produce resonant coil to the center of a time varyingmagnetic field between the two resonant coil through the varying magnetic field constantlyexchange energy to achieve the wireless transmission of electrical energy.(2) The selection and design of the circuit for electromagnetic resonant wirelesspower radio transmission system. Introduced the main circuit selection and design of highfrequency inverter circuit, the resonant coupling links, high-frequency rectifier filter regulator circuit in the electromagnetic resonant coupling wireless power transmissionsystem.(3) Focus on the energy transfer process of electromagnetic resonant couplingwireless power transmission system, simulate and analysis the transmit and receivecircuits.The electromagnetic resonant coupling wireless power transmission experimentscarried out on the basis of theoretical analysis and simulation. Successful location of two5watts light-emitting diode within the distance of80cm, realized the wireless transmissionof electric energy. The transmission efficiency can reach66.7%at the distance of50cm.