二线圈无线电能传输系统的馈电方式分析与实验验证  

Analysis and Experimental Verification on Feed Characteristics of Wireless Power Transmission System with Two-coil Structure

作　　者：李琳[1] 李然[1] 

机构地区：[1]华北电力大学新能源电力系统国家重点实验室,北京102206

出　　处：《华北电力大学学报（自然科学版）》2017年第4期7-12,36,共7页Journal of North China Electric Power University：Natural Science Edition

基　　金：国家自然科学基金资助项目(51277064);中央高校基本科研业务费专项资金资助项目(2017MS115)

摘　　要：二线圈无线电能传输系统有串联馈电和并联馈电两种馈电方式。为了研究不同馈电方式时系统的性能,对两种不同馈电方式的二线圈无线电能传输系统构建集总等效电路,并推导系统正向传输参数S21和效率的计算方法,以分析系统功率传输能力和效率。针对一对无线电能传输线圈实体结构,分别构建采用两种不同馈电方式时的系统部分元等效模型,计算两种馈电方式下的系统功率传输能力和效率,结果与集总参数电路模型的分析结果具有较好的一致性。最后,设计了二线圈无线电能传输系统的实验平台,所得实验结果与理论分析和部分元模型计算结果相吻合,验证了理论分析的正确性。Series feed and parallel feed are the two types of the feed modes of wireless power transmission（ WPT） system with two-coil structure. To investigate the performance of the WPT system in different feed modes and analyze power transmission capability and efficiency of the system,the lumped equivalent circuits of the two-coil WPT systems in two feed modes are built,and the calculation method of scattering parameter S21 and system efficiency are derived. Partial element equivalent circuits（ PEEC） of the WPT system are built for a pair of WPT coils which are fed in two different feed modes. System power transmission capacity and efficiency of the two feed modes are calculated,and the results are well consistent with the theoretical analysis via lumped equivalent circuits. In the end,the experimental platform for the wireless power transmission system with two-coil structure is built,and experimental results coincided with the theoretical analysis and the calculated results of PEEC model,which verifies the theoretical analysis.

关 键 词：无线电能传输 磁耦合谐振 馈电方式 部分元等效电路 

分 类 号：TM72[电气工程—电力系统及自动化]