动态无线供电系统收发端耦合角度对功率影响机理分析

In the process of dynamic wireless power supply under actual conditions, the turbulence of electric vehicles leads to the coupling angle between receiver and transmitter, causing the fluctuation of transmission power. Therefore, it is necessary to analyze the electromagnetic coupling structure with a coupling angle. Firstly, the transmission power formula is obtained based on the mutual inductance coupling model. The change rule under different coupling angles and transmission distances is also obtained, which helps to reveal its influence mechanism. Secondly, the magnetic field intensity distribution isanalyzed by finite element analysis software, which verifies the correctness of the theoretical derivation. Then, the three-unit crosscoil distribution is proposed for the receiver to reduce the impact of the receiver vibration on the transmission efficiency of the system. Through simulation and experiment, the magnetic field intensity's spatial distribution characteristics of three-unit crosscoil and singlecoil under different perturbations are compared, which proves that the structure can stabilize the transmission power to a certain extent.