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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 direct torque control theory and vehicle system dynamics theory, the electromechanical coupling simulation model of high-speed trains at full speed is established considering the electrical and mechanical characteristics of the vehicle transmission system. Aiming at the three kinds of dynamic models of a high-speed EMU, simulation analysis is conducted to study the influence of the transmission system on the vehicle dynamics. The simulation results show that compared with vehicles without transmission system, vehicles with transmission system have lower critical speed and more safety and stability indicators. Under high-speed running conditions, vehicles with transmission-less system Vehicle compared with the transmission system of vehicle structures and the body horizontal and vertical vibration acceleration amplitude has increased, especially the most obvious structural changes; due to the existence of the transmission system, frame and transmission system in many frequency ranges Coupling occurs, resulting in enhanced structural vibration; the driving force of the vehicle dynamics basically no effect.