轨道交通车辆低频磁场和典型静磁场的EMC问题研究

Research on EMC of low frequency magnetic field and typical static magnetic field of rail transit vehicles

聚焦轨道交通的电磁兼容问题,从工程实际出发,对比分析了国内外轨道交通车辆内低频磁场测量方法、限值的相关标准。针对典型静态磁场来源——滤波电抗器,通过实验和计算得到其静磁场的数值及分布。在此基础上,研究通过加装屏蔽板,降低空心滤波电抗器的漏磁数值,满足相关标准要求。

This article focuses on the electromagnetic compatibility problem of rail transit,starting from the actual engineering,comparative analysis of the relevant standards of the low-frequency magnetic field measurement methods and limits in rail transit vehicles at home and abroad.Aiming at the typical static magnetic field source-reactor,the value and distribution of its static magnetic field are obtained through experiments and calculations.On this basis,it is studied to reduce the leakage magnetic value of the air-core reactor by adding shielding plates to meet the requirements of relevant standards.