谐波激励下软磁复合材料磁芯损耗的有限元计算  

Finite element calculation of core loss of soft magnetic composites under harmonic excitation

作　　者：赵磊[1,2] 刘成成[1,2] 汪友华[1,2] ZHAO Lei;LIU Chengcheng;WANG Youhua(State Key Laboratory of Reliability and Intelligence of Electrical Equipment,Hebei University of Technology,Tianjin 300130,China;Province‐Ministry Joint Key Laboratory of EFEAR,Hebei University of Technology,Tianjin 300130,China)

机构地区：[1]河北工业大学省部共建电工装备可靠性与智能化国家重点实验室,天津300130 [2]河北工业大学河北省电磁场与电器可靠性重点实验室,天津300130

出　　处：《兵器材料科学与工程》2023年第3期13-21,共9页Ordnance Material Science and Engineering

基　　金：国家自然科学基金(52007047,51877065)。

摘　　要：为精确、快速地计算谐波激励软磁复合材料(SMC)的磁芯损耗,将有限元模型法与数学模型修正系数法相结合,分别在介观和宏观尺度下建立SMC单个颗粒及实际环形样件的三维有限元模型。基于有限元模型计算谐波激励多变量条件下(如谐波的含量、相位和阶次等)SMC的磁芯损耗,与环形样件法的试验测量结果对比。结果表明:计算与测量结果一致,满足工程精度要求。与磁芯损耗的纯数学模型计算方法相比,有限元模型不仅能考虑磁滞回线局部小回环对SMC磁芯损耗的影响,且考虑集肤效应对涡流损耗的影响。测试发现,SMC的磁芯损耗随谐波含量和阶数增加而增大,受谐波相位的影响很小。In order to accurately and quickly calculate the core loss of soft magnetic composite(SMC)under harmonic excitation,this paper combined the finite element model method with the correction coefficient method of the mathematical model and the threedimensional(3-D)finite element models of SMC single particle and actual ring sample were established at mesoscale and macro scale respectively.Based on the established finite element models,the core losses of SMC under multivariable conditions of harmonic excitation,such as the content,phase and order of harmonics,were calculated and compared with the experimental measurement results obtained by the ring sample method.The results show that the calculated results are in good agreement with the measured results and meet the engineering accuracy requirements.Compared with the method of calculating core loss by mathematical model,the finite element model is able to consider not only the effect of small local loops in the hysteresis loops on the SMC core loss,but also the effect of skin effect on eddy current loss.By analyzing the test results,it is found that the core loss of SMC increases with the increase of harmonic content and order,and the influence of the harmonic phase is almost negligible.

关 键 词：软磁复合材料 谐波激励 集肤效应 校正因子 磁芯损耗 

分 类 号：TM271.2[一般工业技术—材料科学与工程]