磁耦合谐振式无线电能传输拓扑结构研究

Research on topology of magnetically-coupled resonant wireless power transmission

分析了4种磁耦合谐振式无线电能传输拓扑结构模型的输出功率、传输效率与频率、负载、距离的关系,得出结论:发射线圈电感电容串联、接收线圈电感电容并联的拓扑结构更适用于低频率、大负载、远距离的情况;发射线圈和接收线圈电感电容均串联的拓扑结构更适用于较近距离、较高频率、较小负载的情况。通过Matlab仿真得出在相同参数下4种拓扑结构模型的输出电压、电流波形,验证了理论分析的正确性。

The paper analyzed relationships between output power,transmission efficiency and frequency,load and distance of four kinds of topology model of magnetically-coupled resonant wireless power transmission,and concluded：the topology with series connection of capacitor and inductance in transmitting coil,and parallel connection of capacitor and inductance in receiving coil is more suitable for conditions of low frequency,high load and long distance;the topology with series connection of capacitor and inductance in both transmitting coil and receiving coil is more suitable for conditions of relative short distance,high frequency and small load.Output voltage and current waveforms of four kinds of topology model under the same parameters were gotten by Matlab simulation,which verifies correctness of theoretical analysis.