磁耦合谐振式无线能量传输理论研究与实验验证

针对三线圈磁耦合谐振式无线能量传输系统中线圈距离对系统性能的影响问题,分别从理论上推导出负载功率和传输效率关于线圈间距的函数表达式、计算相邻线圈最佳间距的函数关系式,提出利用求解非线性规划问题的方法求解中继线圈最佳位置。基于以上推导设计了系统软件,该软件能够根据给定的系统参数直接输出传输功率、系统效率等值并进行优化。最后通过实验验证了理论和设计的可行性,对于不同的系统可以通过理论和软件来确定各个线圈的最佳位置。

Theoretical Research and Experimental Verification of Wireless Power Transmission Based on Magnetic Coupling Resonance

In order to analyze the influence of the coil distance on the three coil magnetically coupled resonant wireless power transmission system performance, theoretically derived the functional expression of load power and transmission efficiency on the transmission distance between coils, function formula for calculating the optimal spacing of adjacent coils, the method of solving nonlinear programming problems was proposed to solve the optimal position of relay coils. Designed the system software based on the theoretical derivation, which can calculate and optimize the transmission power, system efficiency and other parameters according to the system parameters, then theory and design was verified through experiments. For different systems, the best position of the coil can be determined by theoretical and software calculation.