电源滤波器设计与使用原则分析

Design and Application Principles of Power-filter

城市轨道交通控制系统和电源系统所处的电磁环境非常恶劣 ,为减少由于电磁干扰引起的车载设备误动作 ,保证人身安全 ,必须针对其电源以及传输线加装滤波器。从电源滤波器的基本概念、参数选取以及安装原则等几个方面对设计和使用电源滤波器进行了分析 ,所得结论对其它滤波器的设计和使用也有相应的指导意义。

Filter is an important component to resist ele ct ro-magnetic interference.To avoid new interference,the characteristics of a fi lter must be understood in design and application.Since the electro-magnetic en vironment of power system and control system in vehicles of urban mass transit i s very adverse,filters must be installed in power and transmission lines to redu ce mis-action on device on vehicle and assure the safety of person.This paper a nalyzes the fundamental conception and the parameter selection of power-filter, and presents some important conclusion in its design and installation.