基于平面线圈阵列的电动汽车无线充电金属异物检测方法研究  

Metal object detection for wireless charging of electric vehicles using planar coil array

作　　者：孙冬 高子宸 韩晓娟[2] 张文彪[2] SUN Dong;GAO Zichen;HAN Xiaojuan;ZHANG Wenbiao(State Grid Tonghua Power Supply Company,Tonghua 134001,Jilin,China;School of Control and Computer Engineering,North China Electric Power University,Beijing 102206,China)

机构地区：[1]国网通化供电公司,吉林通化134001 [2]华北电力大学控制与计算机工程学院,北京102206

出　　处：《电测与仪表》2024年第10期188-194,共7页Electrical Measurement & Instrumentation

基　　金：国网吉林省电力有限公司科技项目(2021-12)。

摘　　要：针对电动汽车无线充电,有效检测充电区域内的金属异物对保障电动汽车的充电安全和充电效率具有重要意义。因此,文中提出了一种基于平面线圈阵列的金属异物检测新方法。利用4×4结构的平面线圈阵列作为主要感测元件,结合电磁层析成像技术重建充电区域的电导率分布图像,对重建图像进行后处理获得金属异物的轮廓、位置和数量信息。有限元仿真与实物实验结果表明,此方法能有效检测数种常见金属异物。For the wireless charging of electric vehicles,metal object detection in the charging area is of great importance to ensure the charging safety and charging efficiency of electric vehicles.Therefore,a novel method is proposed for the metal object detection using the planar coil array.A planar array with 4×4 coils is designed as the main sensing element and images of the conductivity distribution in the charging area are reconstructed using the electromagnetic tomography method.In addition,the contour,location and number of metal objects are obtained by post-processing the reconstructed images.The results from the finite element simulation and experimental investigation prove that the proposed method can effectively detect several kinds of common metal objects.

关 键 词：电动汽车 无线充电 金属异物检测 电磁层析成像 平面线圈阵列 

分 类 号：TM910[电气工程—电力电子与电力传动]