基于过渡边界条件的无线充电纳米晶薄层屏蔽磁场计算方法

doi:10.19595/j.cnki.1000-6753.tces.211182

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摘要电动汽车无线充电系统中的纳米晶薄层屏蔽结构在大幅度降低耦合机构的体积与质量的同时,也为复合屏蔽的仿真计算增加了难度。该文为减小纳米晶薄层屏蔽周围磁场计算时间,结合过渡边界条件（TBC）计算方法,分析具有高磁导率的纳米晶薄层屏蔽内磁场分布,为电动汽车无线充电中纳米晶薄层屏蔽复合系统提出了无线充电薄层TBC计算模型。分别搭建无线充电系统的一般计算模型与TBC计算模型,根据趋肤深度调整计算单元,得出精确划分情况下,TBC模型与一般模型计算和实验测量结果相吻合,TBC模型计算时间最多可减小为一般模型的41.7%,大幅度加快无线充电复合屏蔽模型计算速度。

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关键词 ：纳米晶薄层屏蔽, 过渡边界条件, 磁屏蔽, 各向异性, 计算模型

Abstract：The nanocrystalline thin layer magnetic shielding structure in the wireless charging system of electric vehicle greatly reduces the volume and weight of the coupling mechanism, which increases the difficulty of the simulation calculation of the composite shielding. In order to reduce the calculation time of the magnetic field around the shield, combined with the TBC (Transition Boundary Condition) calculation method, the magnetic field distribution with high magnetic conductivity in the nanocrystalline thin layer is analyzed, and the wireless charging thin-layer TBC calculation model is designed for the nanocrystalline magnetic shielding composite system in wireless charging of electric vehicles. The general computing model and the TBC calculation model of the wireless charging system are constructed separately, and the calculation time of TBC model can be reduced to 41.7% of the general model, which speeds up the calculation speed of wireless charging composite shielding model.

Key words： Nanocrystalline thin layer transitional boundary conditions magnetic shielding anisotropy computational model

收稿日期: 2021-07-30

PACS:

TM724

基金资助:优秀青年科学基金（52122701）和国家自然科学基金（51977147,51807138）资助项目

通讯作者: 张献男,1983年生,教授,博士生导师,研究方向为无线电能传输技术。E-mail：zhangxian@hebut.edu.cn

作者简介: 朱子旭女,1998年生,硕士研究生,研究方向为无线电能传输技术。E-mail：zzxyibai@163.com

引用本文:

朱子旭, 张献, 杨庆新, 沙琳, 刘立东. 基于过渡边界条件的无线充电纳米晶薄层屏蔽磁场计算方法[J]. 电工技术学报, 2022, 37(23): 6083-6092. Zhu Zixu, Zhang Xian, Yang Qingxin, Sha Lin, Liu Lidong. A Calculation Method of Magnetic Field of Wireless Charging Nanocrystalline Thin Layer Shielding Based on Transition Boundary Condition. Transactions of China Electrotechnical Society, 2022, 37(23): 6083-6092.

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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.211182 https://dgjsxb.ces-transaction.com/CN/Y2022/V37/I23/6083

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