摘要
电力设备通常工作在含有谐波的情况下,散热不充分和谐波产生的额外损耗都会造成设备温度的升高,导致损耗的计算更为复杂,因此对SMC在温度影响下的复杂激励磁芯损耗研究非常有必要。该文在建立的三维SMC颗粒和环形样件损耗模型的基础上,通过引入校正因子和分析温度对软磁复合材料的影响因素设计能够考虑温度和复杂激励的三维SMC颗粒和环形样件模型,搭建能够测量不同温度和不同谐波激励下SMC环形样件磁芯损耗的实验平台。根据实验结果分析对比温度变化与谐波含量,谐波阶次和谐波相位对磁芯损耗的影响情况,最后根据搭建的实验平台测量温度范围为20~100℃下复杂激励磁芯损耗情况,并与考虑温度的仿真模型计算值进行对比,验证改进模型的准确性。
Power equipment typically operates under conditions that involve harmonics.Insufficient heat dissipation and additional losses 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 design threedimensional models for SMC particles and 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.Finally,using the constructed experimental platform,the complex excitation core losses of SMC were measured within a temperature range of 20℃ to 100℃.The measured values were compared with the calculated values from the simulation model that considers temperature,thereby verifying the accuracy of the improved model.
作者
孙铭鑫
刘成成
汪友华
赵磊
武仕朴
SUN Mingxin;LIU Chengcheng;WANG Youhua;ZHAO Lei;WU Shipu(State Key Laboratory of Reliability and Intelligence of Electrical Equipment,Hebei University of Technology,Tianjin 300130,China;Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province,Hebei University of Technology,Tianjin 300130,China)
出处
《中国测试》
北大核心
2025年第7期55-63,共9页
China Measurement & Test
基金
国家自然科学基金项目(51877065)
河北省省级科技计划资助(215676146H,225676163GH)。
关键词
软磁复合材料
校正因子
温度
复杂激励
三维模型
磁芯损耗
soft magnetic composite materials
correction factor
temperature
complex excitations
3D model
core loss
