双接收器型谐振式无线电能传输系统传输特性研究

Study on transmission characteristics of resonant coupling wireless power transfer system with double receivers

本文通过理论与实验相结合的手段研究了单发射端双负载接收器的无线电能传输系统。通过建立双接收器型无线电能传输模型,以等效互感电路的方法分析同一个发射端下双接收器的系统传输特性。在接收器尺寸要求不严格的条件下,借助Matlab仿真软件,分析得到在电源电压不变时,双负载接收器线圈处于最佳能量接收位置处的输出功率及系统的传输效率远高于单负载接收器时的情况。同时,本文也给出了双负载接收线圈的最佳接收位置。另外,本文设计的对比实验也验证了理论分析的正确性。

By combining theoretical and experimental means to study wireless power transfer system with one single transmitter and double reeeivers, this paper establishes a model of wireless power transmission system with double reeeivers. When the transmitter is the same one, transmission eharaeteristies of system are analyzed with the method of equivalent mutual induetanee eireuits. As the requirement of the size of the reeeiver is not striet, ealeulated by the Matlab, output power and transmission effieieney of double-load reeeivers in the best power reeeiving position are mueh higher than that of single-load reeeiver when the power supply voltage is eonstant. Meanwhile, the best power reeeiving position of the double reeeivers has also been given. In addition, the designed eontrast experiments verify the eorreetness of theoretical analysis.