温度影响下复杂激励对软磁复合材料损耗研究

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中图分类号：TB9;TM41 文献标志码：A 文章编号：1674-5124（2025）07-0055-09

Abstract： Power equipment typically operates under conditions that involve harmonics.Insuffcient heat disipation and additional losss caused by harmonics can lead to an increase in equipment temperature， making the calculation of losses more complex. Therefore， it is necessary to study the complex excitation core losses of Soft Magnetic Composite materials under the influence of temperature.Based on the established threedimensional loss models of SMC particles and toroidal specimens， this paper introduces correction factors and analyzes the factors influencing soft magnetic composite materials due to temperature， in order to desig threedimensional models for SMC particlesand toroidal specimens that consider temperature and complex excitation. An experimental platform was constructed to measure the magnetic core losses of SMC toroidal specimens under different temperatures and harmonic excitations. The experimental results were analyzed to compare the effects of temperature variation，harmonic content，harmonic order，and harmonic phase on core losses.Finaly，using the constructed experimental platform，the complex excitation core losses of SMC were measured within a temperature range of 20∘C to 100∘C . The measured values were compared with the calculated values from the simulation model that considers temperature， thereby verifying the accuracy of the improved model.

Keywords： soft magneticcomposite materials; correction factor; temperature; complex excitations; 3D model; core loss

0 引言

软磁复合材料（SMC）是将高纯度的铁粉绝缘包覆后经过压制、热处理等过程制备而成[1]，SMC由粉末压制而成，不同于硅钢片的叠制而成，具有各向同性，在电机的设计过程中，可以更好地设计三维磁路，使电机磁路更加合理。（剩余10168字）