A Novel Permeability Extraction Method for Nanocrystalline Shielding Sheet in Magnetic Snap-On WPT Applications

IF 2.6 3区计算机科学 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Electromagnetic Compatibility Pub Date : 2026-08-01 Epub Date: 2026-04-13 DOI:10.1109/TEMC.2026.3677898

Qiusen He;Anfeng Huang;Chenxi Liu;Jie Luo;Zhitong Guo;Yin Sun;Jun Fan;Xinglin Sun

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Abstract

Magnetic shielding sheets in wireless power transfer (WPT) systems exert a critical influence on both energy transfer efficiency and electromagnetic compatibility (EMC) performance. Commonly used high-performance layered nanocrystalline shielding sheets exhibit notable discrepancies between the effective permeability of their layered structures and the intrinsic permeability of the nanocrystalline flake ribbon materials. The design of their stacking critically determine the equivalent permeability of these shielding sheets. The precise characterization of permeability in layered nanocrystalline shielding sheets presents a challenge, which limits the accuracy of performance simulations in WPT systems. In addition, in recent widely used magnetic snap-on WPT applications, inadequate permanent magnet design can lead to the saturation of permeability in layered nanocrystalline shielding sheets, severely hindering power transfer efficiency. This study proposes an efficient method for rapid permeability characterization of layered nanocrystalline shielding sheets, solving the permanent magnet-influenced WPT challenge and preventing nanocrystalline saturation from bad permanent magnet design of magnetic snap-on WPT application.

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磁扣式WPT中纳米晶屏蔽片磁导率提取新方法

无线传输系统中的磁屏蔽片对能量传输效率和电磁兼容性能有重要影响。常用的高性能层状纳米晶屏蔽片，其层状结构的有效磁导率与纳米晶片状带材料的本征磁导率存在显著差异。它们的堆积设计决定了这些屏蔽片的等效磁导率。层状纳米晶屏蔽片的磁导率的精确表征是一个挑战，这限制了WPT系统性能模拟的准确性。此外，在近年来广泛应用的磁扣式WPT中，永磁体设计不完善会导致层状纳米晶屏蔽片的磁导率饱和，严重影响功率传输效率。本研究提出了一种快速表征层状纳米晶屏蔽片磁导率的有效方法，解决了永磁体影响WPT的挑战，并防止了磁性卡扣式WPT应用中永磁体设计不良导致的纳米晶饱和。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Electromagnetic Compatibility 工程技术-电信学

CiteScore

4.80

自引率

19.00%

发文量

235

审稿时长

2.3 months

期刊介绍： IEEE Transactions on Electromagnetic Compatibility publishes original and significant contributions related to all disciplines of electromagnetic compatibility (EMC) and relevant methods to predict, assess and prevent electromagnetic interference (EMI) and increase device/product immunity. The scope of the publication includes, but is not limited to Electromagnetic Environments; Interference Control; EMC and EMI Modeling; High Power Electromagnetics; EMC Standards, Methods of EMC Measurements; Computational Electromagnetics and Signal and Power Integrity, as applied or directly related to Electromagnetic Compatibility problems; Transmission Lines; Electrostatic Discharge and Lightning Effects; EMC in Wireless and Optical Technologies; EMC in Printed Circuit Board and System Design.