基于旋转磁场耦合的非对称式无线电能传输系统  

Wireless power transfer system with an asymmetric coupling structure based on rotating magnetic field

作　　者：谢诗云 官涵宇 黄杰 肖蕙蕙 吴莲 Xie Shiyun;Guan Hanyu;Huang Jie;Xiao Huihui;Wu Lian(School of Electrical and Electronic Engineering,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

出　　处：《仪器仪表学报》2024年第8期193-206,共14页Chinese Journal of Scientific Instrument

基　　金：国家自然科学基金(52207004);重庆市自然科学基金(cstc2021jcyj-msxmX0406)项目资助。

摘　　要：为了解决无线电能传输系统耦合机构偏移偏转致使耦合系数和传输能效骤降的问题,提出了一种基于旋转磁场耦合的非对称式WPT系统。所提出的双层正交DD发射机构用以激发旋转耦合磁场,交叉偶极式接收机构可实现旋转磁场的充分拾取。围绕DQDD-CD非对称耦合机构,分析了发射线圈激发磁场的旋转分布特性以及接收线圈偏移偏转位置下拾取磁通的耦合路径;构建了双能道谐振拓扑并推导了谐振元件参数配置条件以及系统传输能效表达式;给出了获得最高耦合系数的线圈绕制、位置和尺寸3类特征参数的配置方法,分析了偏移偏转位置下DQDD-CD耦合机构的互感及耦合系数变化规律,分析结果表明DQDD-CD机构相比于现有6种典型耦合机构具有更全方位和更宽范围的抗偏移偏转性能。最后,在水平偏移50%和垂直偏转90°范围内的情况下,建立了500 W实验样机,传输间距为130 mm,验证了DQDD-CD磁耦合机构的抗偏移偏转性能和系统传输能效性。To overcome the intense decrease in coupling coefficient and transfer efficiency caused by deviation and deflection of the coupling structure of the WPT system,this article proposes a wireless power transfer system with a asymmetric coupling structure based on rotating magnetic field coupling.The transmitter adopts a DQDD coil,and the receiver adopts a CD coil.Firstly,the rotation characteristics of the magnetic field excited by the transmitting coil and the coupling route of the receiving coil under deviation and deflection are analyzed.The LCC-S resonant topology is constructed,and the component configuration and the system efficiency expression are derived.Secondly,the effects of winding,position and size parameters of coupling structure on mutual inductance and coupling coefficient are established;and the mutual inductance and coupling coefficient of DQDD-CD coupling structure under deviation and deflection are given.The superiority of the proposed coupling structure in resisting deviation and deflection compared with the existing six structure is analyzed.Finally,a 500 W prototype is built with a transmission distance of 130 mm under the conditions of 50%horizontal deviation and 90°vertical deflection,which evaluates the anti-deflection performance of the DQDD-CD magnetic coupling mechanism and the transmission energy efficiency of the system.

关 键 词：无线电能传输 磁耦合机构 旋转磁场 偏移 偏转 

分 类 号：TH162[机械工程—机械制造及自动化] TM724[电气工程—电力系统及自动化]