EAST快控电源中空心电抗器的电磁屏蔽计算

发布时间：2018-06-14 22:22

本文选题：EAST快控电源 + 空心电抗器　；参考：《电工技术学报》2017年S2期

【摘要】：针对EAST快控电源系统中空心电抗器运行时产生的磁场对周围电子设备干扰的问题,提出利用金属网屏蔽磁场的理论,通过解析计算得到单层和双层金属网屏蔽时屏蔽系数的表达式。参照现场实物建立多个三维模型,选择不同材料(DT4A,GO,1008steel)的金属网,采用三维有限元和Matlab仿真的方法,获得电抗器周围柜体屏蔽前后磁通密度的分布情况,进而分析了屏蔽系数与网孔数目、激励频率、距离的关系。结果表明,单层金属网屏蔽时,DT4A的屏蔽效果最好;双层金属网屏蔽时,DT4A/GO的屏蔽效果最好。总体而言,双层比单层屏蔽更加有效。对进一步研究空心电抗器的安全运行具有重要意义。
[Abstract]:In order to solve the problem that the magnetic field produced by the hollow reactor in the fast control power supply system of East interferes with the surrounding electronic equipment, the theory of shielding magnetic field with metal mesh is put forward. The expression of shielding coefficient for single and double metal mesh shielding is obtained by analytical calculation. Several 3D models are built according to the physical objects in the field. The metal mesh of different materials (DT4A / GOO1008steel) is selected. The distribution of magnetic flux density around the reactor before and after shielding is obtained by using three-dimensional finite element method and Matlab simulation method. Furthermore, the relationship between shielding coefficient and mesh number, excitation frequency and distance is analyzed. The results show that the shielding effect of DT4A is the best when the monolayer metal mesh is shielded, and the shielding effect of DT4A / go is the best when the double-layer metal mesh is shielded. In general, double-layer shielding is more effective than single-layer shielding. It is of great significance to further study the safe operation of hollow reactor.
【作者单位】：合肥工业大学电气与自动化工程学院;中科院等离子体物理研究所;
【基金】：国家自然科学基金资助项目(51377039)
【分类号】：TM47

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