基于电磁感应的无线充电技术传输效率的仿真研究

摘要

基于互感理论和耦合理论为无线充电的耦合线圈建立了分析传输效率的模型，得到了影响传输效率的关键因素：两线圈半径及相对大小、线圈相对位置、线圈匝数、工作频率和负载等。随后结合微小型无线充电设备的实际应用，利用Ansoft公司的电磁仿真软件Maxwell并采用控制变量法对关键因素进行模拟仿真分析。最后根据模拟仿真的结果，总结出提高该无线充电设备传输效率的若干方法。%The model analyzing transmission efficiency based on the mutual inductance theory and the coupling theory is established for the coil of wireless charging. Transmission efficiency is affected with radius of the coil, relative size,relative location,turns per coil,working frequency,etc. Then considering the application of the micro-miniature wireless charging,some key factor has been simulated analysis by Ansoft Maxwell. At last,some methods to improve the transmission efficiency of wireless charging have been concluded.