城轨车辆牵引系统耦合振荡研究

Study on Coupling Oscillation of Urban Rail Vehicle Traction System

城轨车辆的直流供电环节是牵引传动系统良好调速性能的关键,受车载变流装置及谐波抑制等诸多因素的限制,使得牵引系统在外界激励作用下容易发生直流侧耦合振荡。文章通过探究失稳原理,提出主动、被动阻尼抑制方法,并通过仿真验证了振荡抑制算法的有效性和正确性,从而实现牵引系统直流侧耦合振荡抑制的作用。

The DC power supply of urban rail vehicle was the key to good speed regulation performance of traction system.Limited by many factors such as on-board converter and harmonic suppression,the traction system was prone to DC side coupling oscillation under external excitation.By exploring the instability mechanism,the active and passive damping suppression methods were proposed,and the effectiveness and correctness of the oscillation suppression algorithm were verified by simulation.Thus,the DC side coupling oscillation suppression of traction system was realized.