Core loss analysis of soft magnetic composite under non-sinusoidal excitation based on finite element models

IF 1.1 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC International Journal of Applied Electromagnetics and Mechanics Pub Date : 2023-04-11 DOI:10.3233/jae-220280

Lei Zhao, Chengcheng Liu, Youhua H. Wang, Yiming Yang

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Abstract

Due to the effect of higher harmonics on magnetic properties under actual complex operating conditions, the accurate calculation of core losses of soft magnetic composites (SMC) is complicated. First, this paper improves the existing SMC model by introducing a correction factor to correct the hysteresis loss coefficient so that the model can consider the local variation characteristics of the magnetic density waveform and then calculate the core loss under different harmonic excitation. Then, the influence of skin effect and inhomogeneous flux density within the ring sample model is analyzed. Finally, to validate the improved model, it is compared with other models in the reference based on experimental measurements, respectively. The results show that the core loss calculated by the improved model is closer to the experimental results under different harmonic excitations. In addition, the applicability of the improved SMC model under triangular and square wave excitations is also verified by the derivation of the equations.

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基于有限元模型的非正弦激励下软磁复合材料铁芯损耗分析

在实际复杂工作条件下，由于高次谐波对磁性能的影响，软磁复合材料铁芯损耗的精确计算十分复杂。本文首先对现有的磁滞损耗模型进行改进，引入校正因子对磁滞损耗系数进行校正，使模型能够考虑磁密度波形的局部变化特性，进而计算不同谐波激励下的铁芯损耗。然后分析了集肤效应和环样模型内非均匀磁通密度的影响。最后，基于实验测量，将改进模型与文献中其他模型进行了对比，验证了改进模型的有效性。结果表明，在不同谐波激励下，改进模型计算的铁芯损耗更接近实验结果。此外，通过对方程的推导，验证了改进的SMC模型在三角波和方波激励下的适用性。

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来源期刊

International Journal of Applied Electromagnetics and Mechanics 物理-工程：电子与电气

CiteScore

1.70

自引率

0.00%

发文量

100

审稿时长

4.6 months

期刊介绍： The aim of the International Journal of Applied Electromagnetics and Mechanics is to contribute to intersciences coupling applied electromagnetics, mechanics and materials. The journal also intends to stimulate the further development of current technology in industry. The main subjects covered by the journal are: Physics and mechanics of electromagnetic materials and devices Computational electromagnetics in materials and devices Applications of electromagnetic fields and materials The three interrelated key subjects – electromagnetics, mechanics and materials - include the following aspects: electromagnetic NDE, electromagnetic machines and devices, electromagnetic materials and structures, electromagnetic fluids, magnetoelastic effects and magnetosolid mechanics, magnetic levitations, electromagnetic propulsion, bioelectromagnetics, and inverse problems in electromagnetics. The editorial policy is to combine information and experience from both the latest high technology fields and as well as the well-established technologies within applied electromagnetics.