高速列车牵引电机的同步虚拟主轴控制

Electronic line-shafting control for high speed traintraction motors

针对高速列车牵引电机的同步控制问题,分析了系统同步性对于列车运行状态的影响作,并比较了不同控制策略的优势与不足,提出了利用虚拟主轴控制满足列车牵引系统高同步性的需求的方案,在Matlab中结合传统的虚拟主轴控制理论及列车牵引电机实际运行情况,对传统虚拟主轴控制模型控制参数做出调整,对启动阶段的控制策略进行了优化,建立了一个包含四台永磁牵引电机的同步控制系统模型。利用所建模型分析了系统发生负载扰动,负载不平衡等情况下转速,转矩,转速差,转角差的变化情况,并分析了系统保持同步的临界条件。研究结果表明,将虚拟主轴控制策略应用在高速列车牵引电机的同步控制之中,有着同步性高、响应迅速等的优点,该控制策略有着良好的应用前景。

Aiming at the coordination of high speed railway traction motor,the effect of system synchronization of train working performance as well as the advantages and disadvantages of different control strategies was analyzed.Electronic virtual line-shafting was chosen for it couldmaintain coordination for most operating conditions.Combined with traditional electronic virtual line-shafting（EVLS） theory and the working situation of traction motors,the traditional EVLS controlling model was optimized and a model which contains four motors was built in Matlab.The model was used to analysis the system performance under load disturbance and imbalance situation.Thecritical condition of the system coordination was analyzed too.The results indicate that using electronic line-shafting technique incontrolling train traction motors has the advantages of high coordination,fast response has a good application prospect.