一种地铁辅助电源系统中传导骚扰的抑制方法  

A Method to Suppress Conduction Emission in Metro Auxiliary Power System

作　　者：李康乐 常超 LI Kang-le;CHANG Chao(CRRC Xi'an Yonge Jie Tong Electric Co.,Ld.,Tech Center,Xi'an 710016,China)

机构地区：[1]西安中车永电捷通电气有限公司,技术中心,陕西西安710016

出　　处：《电力电子技术》2020年第9期8-9,14,共3页Power Electronics

摘　　要：针对某地铁车辆的速度传感器因受到辅助电源系统电源输入端产生的传导骚扰而产生的故障,详细分析了干扰源与传导路径。根据批量产品最小改动的原则,最终选择使用安规电容进行传导骚扰抑制,并详细介绍了安规电容的选型方法。通过现场测试,证明所选电容可以有效抑制电源线的传导骚扰,速度传感器恢复正常工作。Amid the malfunction of speed sensor of a metro vehicle caused by conduction emission which is produced by the power line,the conduction path and the interference source is elaborately analyzed.Based on the principle of minimum modification on batch products,the safety capacitor is chosen to suppress the conduction emission,and the way of choosing capacitor is described in detail.Through spot test,it is proved that the chosen capacitor could effectively suppress the conduction emission generated by the power line and the speed sensor resumed back to normal work.

关 键 词：辅助电源 传导骚扰 传导路径 安规电容 

分 类 号：TN86[电子电信—信息与通信工程]