摘要
针对现场运行中牵引变流器中间直流电压存在周期性低频波动的问题,文中通过搭建牵引变流器仿真模型研究了牵引电机的输出特性。首先基于磁场定向的空间矢量控制系统搭建变流器逆变侧仿真模型,通过对其牵引特性的仿真,验证了所搭建系统的正确性;随后考虑变流器中间直流电压波动情况,仿真了牵引电机的输出电气量;最后采用频谱分析的方法,确定了中间直流电压波动频率、幅值与牵引电机定子电流的幅频对应规律。
Aiming to the periodic fluctuation problem in the middle DC link of traction converter,the output characteristics of traction motor are studied by building the simulation model of traction converter.Firstly,the simulation model of traction converter is built based on the Space Vector Pulse width Modulation.After the simulation analysis of the traction characteristics,the correctness of the model is verified.Secondly,considering the fluctuation of the middle DC voltage,the output electrical quantities of traction motor are simulated.Finally,the amplitude-frequency correspondence between the intermediate DC voltage fluctuation signal and the stator current is determined with the frequency analysis.
作者
王雅婷
WANG Yating(Locomotive&Car Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China)
出处
《铁道机车车辆》
北大核心
2021年第4期94-98,共5页
Railway Locomotive & Car
关键词
牵引变流器
空间矢量控制
电压波动
频谱分析
traction converter
space vector pulse width modulation
voltage fluctuation
frequency analysis
