基于磁耦合谐振技术的无线充电系统

摘要

This paper introduces the working principle and the basic structure of magnetic coupled resonant wireless power transmission technology , and puts forward several methods to improve the efficiency. Designed a wireless charging based on magnetic coupling resonance experiment device , and tried to in the optimization of each module , as a whole the relationship between the parts and make the system work in the best state.The main circuit adopts full bridge inverter circuit , the control circuit adopts PWM+PLL, the resonant frequency is 76 kHz, the efficiency is more than 90%.%本文介绍了磁耦合谐振式无线电能传输技术的工作原理、基本结构,并且提出了几种提高效率的方法.设计了一种基于磁耦合谐振的无线充电实验装置,并试图在各模块优化的情况下,统筹各部分关系,使系统整体工作在最佳状态.主电路采用全桥逆变电路,控制电路采用PWM+PLL电路,谐振频率为76 kHz,实验证明效率可达90%以上.