| In this thesis,the traditional two coil and three coil coupling are analyzed and the three coil coupling model is designed.By using Maxwell finite element simulation software to simulate the coupling model of two coils and three coils.The whole wireless charging circuit is designed by Multisim Simulation Software to simulate the circuit.Verify the transmission efficiency of the three coil and two coil and three coil coupling model,and get that the transmission efficiency of each receiving coil of three coils is better than that of the two coils under the condition of the same distance,and its power is greater,more practical significance.Magnetic coupling resonance wireless energy transmission technology can achieve high power and high efficiency energy transmission in medium distance,which is more suitable for wireless charging of electric vehicles.As the core part of the technology,the reasonable coil parameter design can effectively improve the output power and transmission efficiency of the system.Aiming at the coupling coil in MRR wireless charging system,the traditional coupling of two coils and three coils is analyzed and the coupling model of three coils is designed.The influence of the coil parameters on the transmission performance of the system is analyzed by MATLAB simulation.The whole wireless charging circuit is designed by Multisim Simulation Software to simulate the circuit.The transmission efficiency of the three coil coupling model is verified,and the transmission efficiency of each receiving coil of the three coils is better than that of the two coils and the three coils under the condition of the same distance,and the power of each receiving coil is greater,which is more practical. |
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