一种频率跟踪式无线电能传输装置设计

摘要

无线电能传输系统的传输距离,是该技术能否具有实用价值的关键因素.为解决传输效率、传输功率随传输距离不断变化,导致总体性能下降的问题,本文提出了一种无线电能传输系统参数在不同距离下的最优参数匹配算法.该算法使系统能够依照特定的控制方式对传输距离进行趋近匹配.在不同传输距离下,算法实时调整系统的工作频率及发射、接收线圈的物理参数,使系统时刻处在相对最优工作点.并进行了基于耦合模理论的Matlab仿真,结果证明该算法能够使系统的参数实时跟踪传输距离,提高了装置的实用价值.%The transmission distance of wireless power transmission system is a key factor to the practical value of the design. The transmission efficiency and transmission power with the transmission distance would be constantly changed, resulting in an overall decline in performance.To solve the problem,this paper proposes a wireless power transmission system parameters at different distances under optimal parameters matching algorithm. The algorithm enables the system to make closer watching for transmission distance according to specific control mode. In different transmission distance , the algorithm can adjust real-time frequency of the system and the physical parameters of the receiving and the emission coils,which make the system always in its optimal operating point. And through the Matlab simulation of coupled-mode theory, the results show that the algorithm enables real-time tracking system parameter transmission distance and increases the practical value of the device.