四线圈谐振耦合无线能量传输系统的建模与分析

Modeling and Analysis of Four Coils Resonant Coupling Wireless Power Transmission System

磁耦合谐振无线能量传输作为一种新型无线能量传输技术,为小型家用电器、体内植入器件等提供了一种安全、高效且传输距离较长的能量供给方式。在建立磁耦合谐振无线能量传输系统等效电路模型的基础上,推导出系统效率与模型参数的关系表达式,并对系统的驱动线圈和负载线圈的失谐进行了深入分析,理论分析与实验结果一致。

Magnetically coupled resonance-based wireless power transfer （WPT） is a novel technology to deliver power to small household appliances and biomedical implants with safety and high efficiency way over relatively long distance. In this paper we explored the variation of transfer efficiency with model parameters based on the equivalent circuit model of magnetically resonant coupling wireless power transfer system. Moreover, the detuniug effect of driver and load loops on the system performanee was clarified in detail. The model-based analysis was validated by the experimental results, which provided a good guidance no how to design the WPT system.