网格型螺线管线圈单管逆变无线电能传输系统研究与设计  

Research and design of single-switch inverter wireless power transfer system for grid flat spiral pad coils

作　　者：杨奕 郭科[1,2] 郭强 王雩语 谢诗云[1,2] Yang Yi;Guo Ke;Guo Qiang;Wang Yuyu;Xie Shiyun(School of Electrical and Electronic Engineering,Chongqing University of Technology,Chongqing 400054,China;Chongqing Engineering Research Center of Energy Internet,Chongqing University of Technology,Chongqing 400054,China)

机构地区：[1]重庆理工大学电气与电子工程学院,重庆400054 [2]重庆理工大学重庆市能源互联网工程技术研究中心,重庆400054

出　　处：《仪器仪表学报》2023年第12期161-174,共14页Chinese Journal of Scientific Instrument

基　　金：国家自然科学基金(52207004)项目资助。

摘　　要：无线电能传输系统磁耦合机构发生偏移和偏转时,存在耦合系数和效率急剧下降的问题。该文面向中小功率无线充电应用,设计了一种单磁通回路网格型螺线管(GFSP)磁耦合机构,磁场均匀分布兼具抗偏移和抗偏转性能。此外针对补偿拓扑构建了一种单管逆变P#LCC-S谐振网络拓扑结构,在保留传统LCC-S补偿网络性能的同时有效简化电路结构。首先,建立磁动势模型,揭示机构不同空间位置磁场分布规律,并对机构参数进行优化;其次,建立双路P#LCC-S谐振网络电路等效模型,推导出在发射线圈激励电流恒定及输出电压恒定状态下的谐振元件参数配置条件;最后,搭建一台300 W实验样机,分别在XOY平面偏移±120 mm,Z轴偏移50~100 mm,绕Z轴偏转0°~90°范围内,样机的耦合系数保持率始终高于50%,传输效率大于80%,从而验证了所提出系统的有效性与可行性。When the magnetic coupling mechanism of the wireless power transfer system is deviated and deflected,there are problems of a drastic decrease in coupling coefficient and efficiency.In this article,a single flux loop grid flat spiral pad(GFSP)magnetic coupling mechanism is designed for medium or small power wireless charging applications.The uniform distribution of the magnetic field makes it both anti-misalignment and anti-deflection.In addition,a single-switch inverter P#LCC-S resonant network topology is proposed for the compensation topology,which effectively simplifies the circuit structure while retaining the performance of the traditional LCC-S compensation network.Firstly,a magnetomotive force model is formulated to reveal the magnetic field distribution law at different spatial positions of the mechanism and optimize the parameters of the mechanism.Secondly,an equivalent model of the dual P#LCC-S resonant network circuit is established to derive the parameter configurations of the resonant elements under the constant excitation current of the transmitting coil and the constant output voltage.Finally,a 300 W experimental prototype is constructed,and the coupling coefficient retention rate of the prototype is always larger than 50%and the transmission efficiency is greater than 80%within the ranges of±120 mm of XOY plane misalignment,50~100 mm of Z-axis misalignment,and 0°~90°of Z-axis deflection,respectively.Therefore,the validity and feasibility of the proposed system are evaluated.

关 键 词：无线电能传输 P#LCC-S GFSP磁耦合机构 抗偏移和抗偏转 

分 类 号：TM724[电气工程—电力系统及自动化] TH86[机械工程—仪器科学与技术]