无线电能传输系统效率优化

Study of Efficiency Optimization of the Inductive Power Transfer System

针对感应电能传输(IPT)系统通用能量供电平台不同功率等级负载变化时系统效率降低的问题,设计一种基于初级谐振电容控制的效率优化策略,确保不同功率等级的负载工作效率均达到最优。基于交流阻抗分析法建立电压型IPT系统的系统模型和效率模型,得出不同负载条件下,效率达到最优的最优电容值、不同功率等级的系统所对应的初级谐振电容的阈值和达到效率要求所需要的初级谐振电容值。仿真与实验结果验证了理论分析的正确性和该效率优化策略的有效性。

In order to solve the problem that the efficiency of the inductive power transfer（IPT） system common pow- er supply platform decreases when the different power rating load changes.An efficiency optimization strategy based on the primary resonant capacitor has been proposed, in order to make different power rating load achieve optimal efficiency.With AC impedance analysis,the system model and efficiency model of voltage type IPT system have been built,then the optimal capacitor value, the threshold of the primary resonant capacitor and the capacitor value to achieve the demanded efficiency are obtained under different load conditions.The simulation results verify the validity of the theoretical analysis and the effectiveness of the proposed efficiency optimization strategy.