电源学报

基于垂直解耦线圈组的WPT系统金属异物检测方法

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项飞 , 钟文兴中国电源学会会员

电源学报 | 无线电能传输 2025,23(6): 258-266

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电源学报 |无线电能传输 2025 , 23 (6) : 258 -266

基于垂直解耦线圈组的WPT系统金属异物检测方法

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项飞, 钟文兴中国电源学会会员

作者信息

浙江大学电气工程学院，杭州　310027

通讯作者:

钟文兴（1984—　），男，中国电源学会会员，通信作者，博士，副教授。研究方向：无线电能传输，电动汽车无线充电电力电子技术。E-mail：wxzhong@zju.edu.cn。

作者简介:

项飞（1997—　），男，硕士研究生。研究方向：无线充电金属异物检测。E-mail：feixiang@zju.edu.cn。

Metal Object Detection Method for WPT System with Vertically Decoupled Coil Sets

Fei XIANG, Wenxing ZHONG Member, CPSS

Affiliations

College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China

出版时间: 2025-10-30 doi: 10.13234/j.issn.2095-2805.2025.6.258

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摘要

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针对单个平面方形线圈的无线电能传输系统，提出1种基于垂直解耦线圈组的金属异物检测MOD（metal object detection）方法。检测线圈通过合理组合形成检测线圈组，与发射线圈和接收线圈同时实现解耦。在无金属异物时，检测线圈组的感应电压接近0，且受接收线圈偏移影响小。当金属异物落在发射线圈顶部时，会产生涡流，在检测线圈组中感应出电压。所提方法的检测准确度基本不受接收线圈偏移的影响，无需针对不同的线圈偏移位置进行检测电路置零或调整阈值。检测线圈的参数通过有限元仿真进行优化设计。基于300 W无线充电系统进行MOD实验，结果表明所提方法可以在偏移情况下实现准确的金属异物识别。所提方法解决了平面检测方案受接收线圈偏移影响的问题，检测灵敏度高，具有较高工程应用价值。

关键词

金属异物检测 / 无线电能传输 / 解耦线圈组

Abstract

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For a wireless power transfer system with one single planar rectangular pad, a metal object detection (MOD) method based on vertically decoupled coil sets is proposed. The detection coils are combined in a reasonable manner to form a detection coil set, which is decoupled from the transmitting and receiving coils simultaneously. When there is no metal object, the induced voltage of the detection coil set will be close to zero and minimally affected by the offset of the receiving coil. When a metal object falls on the top of the transmitting coil, eddy currents will be generated and induced voltage will appear in the detection coil set. The detection accuracy of the proposed method is not significantly affected by the offset of the receiving coil, and there is no need to reset the detection circuit or adjust the threshold for different offset positions. The parameters of the detection coil are optimized by finite element simulations. Based on a 300 W wireless charging system, MOD experiments were conducted, and results show that the proposed method can accurately identify metal objects even in offset situations. This method solves the problem of a planar detection scheme being affected by the offset of the receiving coil, with high detection sensitivity and great engineering application value.

Key words

Metal object detection (MOD) / wireless power transfer (WPT) / decoupled coil set

引用本文

项飞, 钟文兴中国电源学会会员. 基于垂直解耦线圈组的WPT系统金属异物检测方法. 电源学报, 2025 , 23 (6) : 258 -266 . DOI: 10.13234/j.issn.2095-2805.2025.6.258

Fei XIANG, Wenxing ZHONG. Metal Object Detection Method for WPT System with Vertically Decoupled Coil Sets[J]. Journal of Power Supply, 2025 , 23 (6) : 258 -266 . DOI: 10.13234/j.issn.2095-2805.2025.6.258

基金

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中央高校基本科研业务费专项资金资助项目(2021FZZX001-12)

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2025年第23卷第6期

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文章信息

doi: 10.13234/j.issn.2095-2805.2025.6.258

接收时间：2022-12-14
首发时间：2026-10-26
出版时间：2025-10-30

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收稿日期：2022-12-14
修回日期：2023-04-20
录用日期：2023-05-08

基金

Fundamental Research Funds for the Central Universities(2021FZZX001-12)

中央高校基本科研业务费专项资金资助项目(2021FZZX001-12)

作者信息

浙江大学电气工程学院，杭州　310027

通讯作者:

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2种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

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