Study On One-to-many Wireless Power Transmission Scheme Based On Magnetic Resonance Coupiing

The major work of this paper is researching on the one-to-many wireless power transmission scheme which based on magnetic resonance coupling. First of all, outlined the basic principles and research methods of the one-to-one wireless energy transmission system based on magnetic resonance coupling, then expand the analysis of two kinds of one-to-many wireless power transmission system. At first, establishing the circuit model of two kinds of system, and by solving the matrix equations of the system which is on the resonance state we can get the mathematic expression of input current, output average power, average power of source resistance, loop current, average power of load resistance and transmission efficiency. Then using the software MATLAB to analysis the mathematic expression obtained before, mainly analysing the influence of transmission distance and coupling coefficient on the system. What is more, on the basis of the theoretical analysis, studying on how to get maximum power output state and how to assign power in accordance with different needs to the load resistance of different current. Finally given the research methods of the system when there are N receiving circuits.At the same time this paper also simulated the various status of the system by the simulation software (ADS), which is mainly simulated to the general transmission status, the maximum power output status, power allocation status, and adding the influence of the frequency on the system. At last did some simple experiments on the basis of the theoretical derivation and simulation, verified the validity of the theoretical derivation.