作　　者： ; ; ;

机构地区： 华南理工大学机械与汽车工程学院

出　　处： 《科学技术与工程》 2012年第31期8265-8270,共6页

摘　　要： 三维无线能量传输系统在工作时最理想的状态是初次级回路在发生谐振,然而在实际工作时系统初次级线圈回路的固有谐振频率会偏离系统预设的工作频率,导致系统的传输效率降低。通过对三维无线能量传输系统进行数学建模,推导出传输效率表达式。通过理论和实验分析了初次级线圈的失谐对系统传输效率的影响,得出初级线圈回路固有谐振频率的变化对系统的传输效率有着重要的影响。 The ideal working state of a wireless power transmission system of MEMS is that the primary launch coil and the second receiving coil are resonant. Actually, that the natural resonant frequency of the two coils devi- ate the system working frequency will lead the transmission efficiency to be low. A mathematical model is proposed. Then, the transmission efficiency expression is deduced. The influences of detuning of the primary launch coil and the second receiving coil to the system transmission efficiency are analyzed by the theoretical and experimental methods. The results show that the variation of the natural resonant of the primary launch coil plays an important part on the transmission efficiency.

关 键 词： 三维 无线能量传输 谐振 失谐 传输效率

领　　域： [电子电信] [电子电信]