轻轨车应急通风电源前级DC／DC变换器研制  

Research and Design of a Former DC/DC Converter for Emergency Ventilation Power Supply of Light Rail Vehicles

作　　者：阮白水[1] 陈杰[1] 董侃[1] 何文辉[1] 

机构地区：[1]北京交通大学,电气工程学院,北京100044

出　　处：《电力电子技术》2012年第2期74-76,共3页Power Electronics

基　　金：“十一五”国家科技支撑计划(2007BAA12B07)~~

摘　　要：介绍了轻轨车应急通风电源前级DC/DC变换器的结构和工作原理。针对变压器次级出现的整流桥寄生振荡问题,分析了振荡产生的原因。为了抑制该振荡,详细分析并对比了3种RCD吸收电路的工作过程及优缺点,并介绍了不同工况下吸收电路结构及参数的选取方法。最后,给出了主电路及吸收电路参数的设计公式,并搭建样机,对设计方案和吸收电路的效果进行了验证。The structure and principle of a former DC/DC Boost converter in light rail vehicles emergency ventilation is introduced.The causes of voltage oscillation of the secondary side rectifier diode is analyzed, and three kinds of RCD snubber circuit is given as well as their advantages and disadvantages.The structure and parameters of the snubber circuit is selected based on working condition.At last, an example is given for the parameter design of main cir- cuit and the snubber circuit.This scheme and the good effect of the snubber circuit is proved by building experimental platform.

关 键 词：变换器 电源 轻轨 寄生振荡 

分 类 号：TM46[电气工程—电器]