辽宁工程技术大学电气与控制工程学院,辽宁葫芦岛 125000
[ "金峰逸 男,2002年6月出生于辽宁省兴城市.现为辽宁工程技术大学电气与控制工程学院本科生.研究方向为电磁场理论计算.E-mail: 18004291118@163.com" ]
[ "马玉芳(通讯作者) 女,1978年9月出生于河北省沧州市.现为辽宁工程技术大学电气与控制工程学院讲师.研究方向为电工与电子技术、电磁场理论计算.E-mail: lgdmyf@163.com" ]
收稿:2022-12-27,
修回:2023-06-07,
纸质出版:2023-12-25
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金峰逸,马玉芳.基于半解析有限元的利兹线交流电阻分析[J].电子学报,2023,51(12):3457-3462.
JIN Feng-yi,MA Yu-fang.Analysis of Litz Wire AC Resistance Based on Semi-Analytical Finite Element Method[J].ACTA ELECTRONICA SINICA,2023,51(12):3457-3462.
金峰逸,马玉芳.基于半解析有限元的利兹线交流电阻分析[J].电子学报,2023,51(12):3457-3462. DOI: 10.12263/DZXB.20230001.
JIN Feng-yi,MA Yu-fang.Analysis of Litz Wire AC Resistance Based on Semi-Analytical Finite Element Method[J].ACTA ELECTRONICA SINICA,2023,51(12):3457-3462. DOI: 10.12263/DZXB.20230001.
利兹线广泛应用于无线电能传输、涡流检测等领域.由于利兹线包含的导线股数多且几何结构复杂,交流电阻计算困难是限制利兹线结构和电磁参数设计的主要原因.传统有限元方法和解析法在计算效率和普适性方面无法满足要求.本文采用半解析有限元法结合电路系统,基于Python语言编程计算,综合考虑集肤效应、邻近效应和循环电流,对利兹线的交流电阻进行了分析.在100 Hz到1 MHz频率范围内,基于并联利兹线模型,验证了半解析有限元法对交流电阻计算的精度和效率,并分析了螺距对利兹线空间磁场分布的影响.本文工作可为不同应用场景下利兹线模型的结构和电磁参数选择提供参考.
Litz wire is widely used in wireless power transfer
eddy current testing and other fields. Due to the large number of strands and complex geometric structure
the difficulty in calculating AC resistance is the main reason for limiting the design of Litz wire structure and electromagnetic parameters. The traditional finite element method and analytical method cannot meet the requirements in terms of computational efficiency and universality. In this paper
the AC resistance of Litz wire considering skin effect
proximity effect and circulating current is analyzed by semi-analytical finite element method and circuit system based on Python language. In the frequency range of 100 Hz to 1 MHz
the accuracy and efficiency of the semi-analytical finite element method for AC resistance calculation are verified based on the parallel Litz wire model
and the influence of pitch on the spatial magnetic field distribution of Litz wire is analyzed. The work in this paper can provide a reference for the structure and electromagnetic parameters selection of Litz wire model in different application scenarios.
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