摘要
电力机车在电气化铁道上运行时,通过接触网向机车供电,接触网供电电压范围为19~29k V(额定电压为25k V)。在机车行驶过程中,由于接触网的电压波动较大,导致机车上的辅助电源输出的单相交流电压也随之波动。因此,机车上的辅助电源无法保持在AC220V恒定的工作状态,引起机车上的AC220V回路电器的供电电压不稳定,造成欠压或过载,对要求严格的精密设备(如机车上电磁炉、手机充电器等)造成严重损坏。本文介绍了机车AC220V稳压电源的工作原理,可以有效防止机车上不稳定电源造成设备的损坏。
When the electric locomotive runs on an electrified railway,the locomotive is supplied with power through the overhead lines,and the supply voltage of the overhead lines ranges from 19~29kV(rated supply voltage is 25kV).In the process of locomotive running,because the voltage fluctuation of the overhead lines is large,the single-phase AC voltage output by the auxiliary circuit power supply on the locomotive also fluctuates,therefore,the auxiliary circuit power supply on the locomotive can't be kept in a constant working state of AC220V,which causes the power supply voltage of the AC220V circuit load electrical appliances on the locomotive to be unstable,resulting in under-voltage or overloading of the electrical appliances,which leads to strict requirements of high-tech.In this paper,the principle of AC220V stabilized power supply for locomotive is introduced,which can effectively prevent equipment damage that caused by unstable power supply on locomotive.
作者
张福忠
张鹤轩
ZHANG Fuzhong;ZHANG Hexuan(Dazhun Railway Company,Shenhua Jungar Energy Limited Liability Company,Jungar Banner,Inner Mongolia,010300;College of Motor vehicle Operation and maintenance Engineering,Dalian Jiaotong University,Dalian,Liaoning,116021)
出处
《神华科技》
2018年第2期74-79,共6页
Shenhua Science and Technology
关键词
电力机车
接触网
机车220V稳压电源
欠压
过载
不稳定
Electric locomotive
Overhead lines
Locomotive AC220V stabilized voltage supply
Under-volt.age
Overloading
Unstable
作者简介
张福忠(1971-),男,现任神华准格尔能源有限责任公司大准铁路公司机务段技术科副科长。Tel:13847738108,E-mail:zhangfuzhong7186@163.com
