基于车载整流器滑模控制的车网系统低频振荡抑制方法

doi:10.6040/j.issn.1672-3961.0.2025.042

摘要/Abstract

摘要： 针对高速列车升弓整备时出现的低频振荡现象,提出一种自适应滑模控制(adaptive sliding mode control, ASMC)的动车组整流器控制策略。以CRH5车型为试验对象,构建与牵引网之间耦合系统的回比矩阵模型,结合改进sum-范数判据,分析低频振荡发生的原因及临界条件。根据低频振荡现象发生时的动车组工况,推导出动车组的状态空间模型,对电压外环及电流内环设计自适应滑模控制器,代替传统的线性比例积分(proportional-integral, PI)控制器。在Simulink/MATLAB中搭建车网耦合系统的仿真模型,与几种传统的控制策略进行仿真分析比较,结果表明,ASMC在超调量、调节时间、电压波动及低频振荡抑制方面综合优于其他几种控制,具有更好的性能,能够有效抑制低频振荡现象。

关键词: 低频振荡, 车网耦合系统, 改进sum-范数判据, 自适应滑模控制, 整流器

Abstract: To address the low-frequency oscillation occurring during the pantograph-raising and preparation phase of high-speed trains, an adaptive sliding mode control(ASMC)strategy was proposed for electric multiple unit(EMU)rectifiers. Using the CRH5 model as the test subject, a return ratio matrix model of the coupled system with the traction network was established. By incorporating an improved sum-norm criterion, the cause and critical conditions of low-frequency oscillation were analyzed. Based on the operational conditions of the EMU during low-frequency oscillation, a state-space model was derived. Adaptive sliding mode controllers were designed for the voltage outer loop and current inner loop to replace conventional linear proportional-integral(PI)controllers. A simulation model of the train-network coupling system was developed in Simulink/MATLAB. Comparative simulations with several traditional control strategies demonstrated that the ASMC approach comprehensively outperformed others in overshoot, settling time, voltage fluctuation, and low-frequency oscillation suppression, exhibiting superior performance and effectively mitigating the low-frequency oscillation phenomenon.

Key words: low-frequency oscillation, train-network coupling system, improved sum-norm criterion, adaptive sliding mode control, rectifier

中图分类号:

TM712

田江涛,李彦哲,陈信州,刚铁成. 基于车载整流器滑模控制的车网系统低频振荡抑制方法[J]. 山东大学学报 (工学版), 2026, 56(2): 121-129.

TIAN Jiangtao, LI Yanzhe, CHEN Xinzhou, GANG Tiecheng. Low-frequency oscillation suppression method in train-network systems based on sliding mode control structure of onboard rectifiers[J]. Journal of Shandong University(Engineering Science), 2026, 56(2): 121-129.

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