轨道车辆牵引电机负载模拟方法的研究

Study on the Method of Traction Motor Load Simulation on Railway Vehicles

在分析了轨道车辆运行过程中牵引电机与传动齿轮、轮对以及轮轨之间力的作用关系的基础上,分别从力和功率的角度建立牵引电机———轮对传动机构的数学模型,得到牵引电机实际负载转矩的表达式;将牵引电机的实际负载等效为阻力负载和惯性负载两个部分,提出了用负载电机转矩模拟阻力负载,用飞轮或负载电机转矩模拟惯性负载的方法;结合CRH2型动车组的实车参数及牵引特性曲线,对电机负载的推导结果进行了验证;结果表明车辆加速性能与实际性能曲线一致,此方法能够准确模拟实车牵引电机负载。

Based on the analysis of force interaction between traction motor, transmission gear, wheelset and wheel-rail during the operation of railway vehicles, established the mathematical model of motor-wheelset traction system, respectively from the perspective of mechanics and power, drawing out the expression of the actual load of traction motor~ and equivalented the actual load to two parts as resistance load and inertial load, and put forwards a method, that is to simulate the resistance load with torque of load motor, inertia load with flywheel or load motor torque. Consulting with the actual parameters and the traction performance curve of CRH2 EMUs, it authenticates and simulates the derivation of the motor load results. The simulation results show the agreement of performance of simulated vehicles and the actual performance curve. It indicates that the method can exactly simulate the real vehicle traction motor load.