纳秒级脉冲电流下铁氧体磁环饱和特性

发布时间：2018-06-19 16:44

本文选题：电磁脉冲 + 电磁防护　；参考：《高电压技术》2017年10期

【摘要】：针对铁氧体环应用于复杂电磁环境防护设计问题,研究了脉冲传导电流作用下铁氧体磁环的饱和特性。在伏安法测得磁环的磁化曲线的基础上,采用磁性朗之万函数拟合磁化曲线,分别获得不同脉冲电流脉宽、磁环厚度、截面积、内外径之比以及材料种类等参数下,磁环的饱和电流特性。结果表明:纳秒级脉冲电流的脉宽对磁环的饱和特性几乎没有影响;磁环的截面积与磁环的饱和电流成线性正比关系,而磁环的厚度以及磁环的内外径之比对磁环的饱和特性几乎没有影响;初始磁导率越大的磁环其饱和电流越小,且饱和电流随截面积的增速也越小。
[Abstract]:In view of the application of ferrite rings in the design of complex electromagnetic environment protection, the saturation characteristics of ferrite rings under the action of pulse conduction current are studied. On the basis of the magnetization curve of magnetic ring measured by voltammetry, the magnetic Langevin function is used to fit the magnetization curve. The parameters of different pulse current pulse width, magnetic ring thickness, cross section area, ratio of inner diameter to outer diameter and material type are obtained, respectively. The saturation current characteristics of the magnetic ring. The results show that the pulse width of nanosecond pulse has little effect on the saturation characteristic of the magnetic ring, and the cross section area of the magnetic ring is in direct proportion to the saturation current of the magnetic ring. The saturation characteristic of the ring is almost unaffected by the thickness of the magnetic ring and the ratio of the inner and outer diameter of the magnetic ring. The higher the initial permeability, the smaller the saturation current and the smaller the saturation current is with the increase of the cross-sectional area.
【作者单位】：强电磁脉冲辐射环境模拟与效应国家重点实验室(西北核技术研究所);
【基金】：国家自然科学基金(51107102)~~
【分类号】：TM277

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