高速列车传动系统机电耦合仿真与分析

Simulation and Analysis of Electromechanical Integration for Drive System in High-speed Trains

基于直接转矩控制理论和车辆系统动力学理论,综合考虑了车辆传动系统电气特性和机械特性,建立全速度下高速列车机电耦合仿真模型。针对某高速动车组3种动力学模型进行仿真分析,研究传动系统对于车辆动力学的影响。仿真结果表明:有传动系统的车辆与无传动系统的车辆相比,车辆临界速度有所降低,运行安全性和平稳性指标都有所偏大;车辆在高速运行条件下,与无传动系统的车辆相比,有传动系统的车辆构架以及车体横向、垂向的振动加速度幅值都有所增大,特别是构架变化最为明显;由于传动系统的存在,构架与传动系统在诸多频率范围内发生耦合,致使构架的振动加强;驱动力对车辆动力学基本没有影响。

Based on the theory of direct torque control（DTC） and vehicle system dynamics, a eletromechanical coupling simulation model of high-speed train was set up, which took the electric and mechanical properties of vehicle drive system into account. Some simulation studies and analyses for three different dynamic models of a high-speed EMUs were performed to study the effect of drive system for vehicle dynamics. The simulation results showed that the critical speed of the vehicle model which had drive system lower than the model which had no drive system, and the running safety and stability of the former were larger than the latter. When vehicles under the condition of high speed operation, compared with the vehicle model which had no drive system, the horizontal and vibration acceleration amplitudes of the model which had drive system were larger, especially the most obvious change was frame. As a result of the existence of the drive system, it made the frame and drive system coupling in many frequency ranges, causing the vibration of the frame to strengthen. It also showed that driving force basically had no effect on vehicle dynamic characteristics.