中国电机工程学报2018，Vol.38Issue(9)：2728-2735,8.DOI:10.13334/j.0258-8013.pcsee.171145
基于前馈电压补偿的地铁牵引变流器直流侧振荡抑制方法
DC-link Stabilization Method for Metro Traction Converter-motor System Based on Feedforward Voltage Compensation
摘要
Abstract
The negative impedance caused by constant power load, limited selection of filter parameters and the harmonics of the power supply network can always caused the DC voltage and current oscillation on the DC-link of the traction converter which will affect the stability of power supply and traction drive system. This paper presented a voltage based active damping technique. By extracting the DC voltage resonance component, the damping voltage vector was introduced on the basis of the feedforward modulation voltage and the method was analyzed in detail. Besides the overmodulation caused by the compensation was also considered, and the influence of the suppression scheme on the steady state control was analyzed. This method is not limited by the bandwidth of the current control loop which improves the input impedance characteristic of the load side and the system stability. Simulation and experimental results verifying the effectiveness of the new active damping method were presented.关键词
地铁牵引传动系统/负阻抗/稳定性控制/电压补偿/过调制Key words
metro traction drive system/negative impedance/stability control/voltage compensation/over-modulation分类
信息技术与安全科学引用本文复制引用
张颖,王惠民,葛兴来..基于前馈电压补偿的地铁牵引变流器直流侧振荡抑制方法[J].中国电机工程学报,2018,38(9):2728-2735,8.基金项目
国家自然科学基金项目(51677156,61733015) （51677156,61733015）
"十三五"重点研发计划课题(2016YFB1200502).Project Supported by National Natural Science Foundation of China (51677156, 61733015) （2016YFB1200502）
The National Key Research and Development Plan of China (2016YFB1200502). （2016YFB1200502）
