摘要
在分析城市轨道供电系统24脉波整流器的工作原理及理想情况下直流侧空载电压的谐波频谱构成的基础上,讨论电网电压不对称和交流电压存在移相误差等因素对整流器直流侧的影响,得到结论:电网电压的负序分量会在整流器的直流侧引入2次低频谐波电压分量,移相角度的误差则会带来12次谐波含量;并以仿真实验进行验证。结论可为直流接触网侧相关设备的滤波参数选择提供参考。
The working principle of the 24 pulse phase-shifting traction rectifier and its dc voltage spectrum under ideal conditions were analyzed.The problems caused by negative-sequence voltages and the error of phase-shifting were also discussed.The results show as follows： The negative-sequence components of the mains voltage produce the secondary low-frequency harmonic components on the DC side of the rectifiers;the extra twelfth harmonics are proved to be the result of the error of phase-shifting.Simulation was done to verify these theoretical hypotheses.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
2012年第3期28-33,共6页
Journal of the China Railway Society
基金
国家科技支撑计划(2006BAG02B06)
关键词
城市轨道交通
牵引供电
移相变压器
负序电压
谐波分析
urban rail traffic
traction power supply
phase-shifting transformer
negative-sequence voltage
harmonic analysis
