摘要
铁基软磁复合材料具有高磁导率、高磁感应强度、低铁损的特性,研究该材料为铁心的电抗器的振动噪声特性对电抗器减振降噪设计具有重要意义。文中基于有限元仿真模型,通过磁场-结构-声学多物理场耦合,对正常运行条件下电抗器的振动与噪声分布进行计算分析,并搭建电抗器噪声测量系统,分别测量硅钢铁心、混合铁心和铁基软磁铁心电抗器的噪声信号,进行试验验证。结果表明:混合铁心和铁基软磁铁心电抗器噪声明显低于硅钢铁心电抗器,混合铁心电抗器受电流变化影响最小。仿真数据显示,硅钢铁心电抗器磁致伸缩与麦克斯韦力噪声比值为1.15,磁致伸缩占比最大。铁基软磁铁心电抗器噪声小的主要原因是磁致伸缩效应小至可以忽略。
Iron-based soft magnetic composites have the characteristics of high magnetic permeability,high magnetic induction strength and low iron loss.It is of great significance to study the vibration and noise characteristics of this material reactor for the design of vibration and noise reduction.In this paper,based on the finite element simulation model,the vibration and noise distributions of the reactors under normal operating conditions are calculated and analyzed through the magnetic field-structure-acoustic multiphysics coupling.The noise measurement system of the reactor is built,and the noise signals of the silicon steel core,hybrid iron core,and iron-based soft magnet core reactor are measured separately for experimental verification.The results show that the noise of the hybrid iron core and iron-based soft magnetic core reactors is significantly lower than that of silicon steel reactors.The hybrid reactor is least affected by current changes The simulation data shows that the magnetostriction to Maxwell force noise ratio of silicon steel core reactor is 1.15.Magnetostriction occupies the largest proportion.The main reason for the low noise of iron-based soft magnetic core reactor is that the magnetostrictive effect is negligible.
作者
张子希
汲胜昌
张玉焜
柳树青
高璐
张凡
ZHANG Zixi;JI Shengchang;ZHANG Yukun;LIU Shuqing;GAO Lu;ZHANG Fan(Xi′an Jiaotong University(State Key Laboratory of Electrical Insulation and Power Equipment),Xi′an 710049,China)
出处
《电力工程技术》
北大核心
2024年第5期199-207,共9页
Electric Power Engineering Technology
基金
国家自然科学基金资助项目(52007145)
陕西省重点研发计划资助项目(2022GXLH-01-30)。
关键词
三相干式电抗器
铁基软磁复合材料
噪声机理
磁致伸缩
多物理场耦合
有限元
three-phase dry-type reactors
iron-based soft magnetic composite
noise mechanism
magnetostrictive
multi-physical fields coupling
finite element
