动静态协同耦合无线电能传输系统能效分析

Energy Efficiency Analysis of Dynamic and Static Cooperative Coupling Wireless Power Transmission System

针对实现动态负载和静态负载同时无线供电与充电的问题,采用有限元仿真分析软件进行了场路耦合仿真研究,搭建了动静态协同耦合无线电能传输系统。分析了系统在单一静态负载、单一动态负载和动/静负载三种工作状态下的能效变化,以及动/静负载情形中静态侧回路和动态侧回路的相互影响。仿真结果表明,相比单一静态负载和单一动态负载,动/静负载同时工作时系统传输效率更高,且动态侧接收功率与静态侧耦合系数、品质因数成负相关,静态侧接收功率与动态侧耦合系数、品质因数成负相关。实验结果和仿真一致,能够为动态负载和静态负载同时无线供电与充电的实际应用提供一定参考。

Aiming at the problem of realizing dynamic load and static load simultaneously wireless power supply and charging,the finite element simulation software was used to carry out the simulation research of field path coupling,and the dynamic and static cooperative coupling wireless power transmission system was built.The energy efficiency changes of the system under single static load,single dynamic load and dynamic/static load were analyzed,and the interaction between the static side loop and dynamic side loop under dynamic/static load was also analyzed.The simulation results show that,compared with single static load and single dynamic load,the transmission efficiency of the system is higher when both dynamic and static loads work simultaneously,and the received power on the dynamic side is negatively correlated with the coupling coefficient and quality factor on the static side,while the received power on the static side is negatively correlated with the coupling coefficient and quality factor on the dynamic side.The experimental results are consistent with the simulation results,which can provide some reference for the practical application of dynamic load and static load simultaneously wireless power supply and charging.