抑制电气化铁路低频振荡的四象限变流器控制方法  

Four Quadrant Converter Control Method for Suppressing Low Frequency Oscillation of Electrified Railway

作　　者：刘诗慧[1] 林飞[1] 杨中平[1] 连巧娜 张润泽[1] 

机构地区：[1]北京交通大学电气工程学院,北京100044

出　　处：《电工技术学报》2016年第A02期76-83,共8页Transactions of China Electrotechnical Society

基　　金：国家973高速列车基础力学问题研究(2011CB711106)资助项目

摘　　要：针对电气化铁路中列车四象限变流器和牵引供电系统不匹配造成的低频振荡现象提出了抑制方法。首先,介绍列车牵引传动系统中的四象限变流器主电路及其瞬态电流控制策略。然后,在四象限变流器线性化闭环传递函数的基础上,对车网耦合系统进行稳定性分析,研究了低频振荡的机理。基于分析结果,采用改变系统阻尼的思路,提出主动阻尼补偿措施,并进行理论分析。最后,利用多车仿真模型及小功率实验平台对所提控制方法的正确性进行了验证。The suppression method of low frequency oscillation phenomenon in the electrified railway caused by that four quadrant converter of train and the traction power supply system do not match is proposed in this paper. First, the main circuit and the transient current control strategy of four quadrant converter were introduced. Then, on the basis of the linear closed loop transfer function of the four quadrant converter, the stability analysis of the train and network coupling system was carried out, the mechanism of low frequency oscillation was studied. Based on the analysis results, adopting the idea of changing system damping, the corresponding suppression method and the active damping compensation measures were put forward, and the theoretical analysis was carried out. The correctness of the control method is verified by multi vehicle simulation model. The theoretical analysis results were verified by the small power experiment platform.

关 键 词：电气化铁路 低频振荡 四象限变流器 主动阻尼 

分 类 号：TM712[电气工程—电力系统及自动化]