基于改进型三维螺线管磁耦合结构的多线圈长气隙无线电能传输系统研究  

Research on Multi-coil Large Air Gap Wireless Power Transfer System Based on Improved 3D Solenoid Magnetic Coupling Structure

作　　者：谷鹏 王懿杰[1] 关弘路 麦建伟 徐殿国[1] GU Peng;WANG Yijie;GUAN Honglu;MAI Jianwei;XU Dianguo(School of Electrical Engineer&Automation,Harbin Institute of Technology,Harbin 150001,Heilongjiang Province,China;State Grid Henan Electric Power Research Institute,Zhengzhou 450000,Henan Province,China)

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,黑龙江省哈尔滨市150001 [2]国网河南省电力公司电力科学研究院,河南省郑州市450000

出　　处：《中国电机工程学报》2022年第23期8762-8771,共10页Proceedings of the CSEE

基　　金：国家自然科学基金项目(51922033);台达电力电子科教发展计划(DREK2020003)。

摘　　要：为了在330kV支柱绝缘子高电位点处给状态监测设备供电,文中提出一种基于改进型三维螺线管的五线圈磁耦合结构。依靠现有绝缘距离实现了长气隙无线电能传输,其传输距离为2.9m。该磁结构可以有效地约束磁场,达到提升耦合系数的目的。文中借助有限元仿真模型,分析高压电场与松耦合变压器磁场间的相互影响,研究表明,磁结构的嵌入不会破坏绝缘支柱的绝缘特性,而支柱绝缘子对磁场的影响亦不明显。文中对该结构的五线圈耦合电路模型进行分析,理想情况下,其谐振电路具有恒压输入-恒压输出的特性。在长达3m的样机平台下的实验结果表明,该系统在传输功率为16W时,可以实现34.35%的系统最高效率。In order to supply power for condition monitoring equipment at the high potential point of 330kV post insulators,a five-coil magnetic coupling structure based on an improved three-dimensional solenoid was proposed.The existing insulation distance was responsible for achieving large air gap wireless power transfer with the wireless distance as 2.9m.The coupling structure can effectively constrain the magnetic field and achieve the purpose of improving the coupling coefficient.The interaction between the high-voltage electric field and the magnetic field of the loosely coupled transformer was analyzed with the aid of a finite element simulation model.The analysis shows that the embedding of the magnetic structure does not destroy the insulating properties of the insulating pillar,and the influence of the insulating pillar on the magnetic field is not obvious.Circuit based on the five-coil coupling structure was analyzed.Ideally,its resonant circuit has the characteristics of constant voltage(CV).Experimental results on a prototype platform with a length of 3m show that the system can achieve the highest system efficiency of 34.35%when the transferred power is 16W.

关 键 词：无线电能传输 三维螺线管 多线圈磁耦合结构 高压支柱绝缘子 绝缘距离 

分 类 号：TM46[电气工程—电器]