【摘要】 采用谐振耦合方法研究了中等距离无线能量传输技术,建立了无线能量传输模型。对接收功率和传输效率进行了理论推导,讨论了收发回路发生谐振时最大传输效率与传输距离、负载电阻值之间的关系。设计了不同参数的线圈进行对比实验,探究了无线能量传输的影响因素,验证了传输距离与传输效率的关系。讨论了频率、线圈半径和线圈匝数对负载端电压的影响,以及不同直径线圈间能量的传输关系。更多还原

【Abstract】 The technology of wireless power transmission in middle distance is studied based on resonant coupling,and a wireless power transfer model is established.The theoretical derivation of the received power and the transmission efficiency is conducted.The relations among the maximum transmission efficiency,transmission distance and load resistance value are researched when transmitting and receiving circuit is working in resonance coupling state.The comparative tests are carried out with many coils of different parameters to explore factors which impact the result of wireless power transmission,the relationship between the transmission distance and the transmission efficiency is verified.The factors which affect the output voltage are studied such as frequency,transmission distance,the radius of the coil,the coil turns and the load resistance value,and the relationship of power transfer between different diameter coils is also explored.更多还原