基于磁热耦合法的MnZn铁氧体磁芯温升仿真分析  

Simulation analysis of the temperature rise of MnZn ferrite cores based on magnetothermal coupling method

作　　者：刘紫菱 应耀 李兆程 车声雷 LIU Zi-ling;YING Yao;LI Zhao-cheng;CHE Sheng-lei(Research Center of Magnetic and Electronic Materials,College of Materials Scienceand Engineering,Zhejiang University of Technology,Hangzhou 310014,China)

机构地区：[1]浙江工业大学材料科学与工程学院磁电功能材料研究所,浙江杭州310014

出　　处：《磁性材料及器件》2024年第2期30-36,共7页Journal of Magnetic Materials and Devices

基　　金：国家重点研发计划政府间国际科技创新合作项目(2022YFE0109800);国家自然科学基金资助项目(U1809215)。

摘　　要：运用磁热耦合法对PC40 MnZn铁氧体环形和EI型磁芯工作时的温升进行有限元仿真分析。首先利用有限元分析法对环形磁芯的电磁场和温度场进行仿真模拟,并与实验结果比较。结果表明,损耗和温度的仿真分析结果与实验结果符合较好,误差在10%以内。其次采用该方法进一步模拟了形状更复杂的EI型铁氧体磁芯的温升情况,给出了EI磁芯的温升情况和不同位置的温度分布。研究结果表明,磁热耦合法拟合可用于确定异形磁芯的发热点位置和温升情况,从而在设计时采取适当的散热措施,提高功率电子元件性能的稳定性和可靠性。Based on the finite element simulation technology,the magnetothermal coupling method was used to study the temperature rise of ring and EI type PC40 ferrite cores.Firstly,the finite element analysis method was used to simulate the electromagnetic field and temperature field of the ring core.The simulation results of core loss and temperature are in good agreement with the corresponding experimental results with the error of within 10%.Secondly,the temperature rise of more complicated EI ferrite core was further simulated by this method,and the temperature rise of different positions of EI core was obtained.The magnetothermal coupling method is a suitable method to determine the hot spot position and temperature rise in the core.Therefore,appropriate heat dissipation measures can be taken in the device design to improve the stability and reliability of the performance of power electronic components.

关 键 词：铁氧体磁芯 磁热耦合法 损耗 温升 仿真分析 

分 类 号：TM277.1[一般工业技术—材料科学与工程]