电工技术学报2017，Vol.32Issue(z2)：64-70,7.DOI:10.19595/j.cnki.1000-6753.tces.L70363
EAST快控电源中空心电抗器的电磁屏蔽计算
Electromagnetic Shielding Calculation of Air Core Reactor in EAST Fast Control Power Supply
摘要
Abstract
In experimental advanced superconducting Tokamak (EAST) power system, the magnetic field can cause interference of the magnetic field to the surrounding electronic equipment in operation of air core reactor. In this paper, the theoretical analysis of shielding magnetic field of metal mesh is presented. The expressions of shielding factor of single layer metal mesh and double layer metal mesh are obtained by analytical calculation. Based on the physical model, a number of 3D models are established. The metal mesh of different materials (DT4A, GO, 1008steel) is selected as a shield. Using three-dimensional finite element method and Matlab simulation and flux density distribution around the shield cabinet were obtained. Then, analysis of the shielding coefficient and the three influencing factors, three factors are number of mesh, excitation frequency and distance. The results show that the shielding effect of DT4A is best when the single metal mesh is shielded, and the shielding effect of DT4A/GO is best when the double metal mesh is shielded. Overall, the double layers are more effective than single layer shields. To further study the safety operation of the air core reactor is of great significance.关键词
EAST快控电源/空心电抗器/金属网/屏蔽系数Key words
EAST fast control power supply/air core reactor/metal mesh/shielding factor分类
信息技术与安全科学引用本文复制引用
鲍晓华,胡云鹏,张程,高格..EAST快控电源中空心电抗器的电磁屏蔽计算[J].电工技术学报,2017,32(z2):64-70,7.基金项目
国家自然科学基金资助项目(51377039). （51377039）
