摘要
以大功率永磁直驱客运电力机车为载体,采用动力学仿真分析和整车试验相结合的方法,分析了电机两相短路工况与三相短路工况对机车关键部件振动加速度的影响。仿真分析表明,与正常工况相比,电机两相短路时电机、轴箱和构架的三向振动加速度增幅明显,而三相短路时各部件振动加速度变化较小;试验数据表明,与正常轴位相比,电机两相短路轴位的电机、轴箱、构架和车体三向振动加速度增幅明显,其中轴箱纵向振动加速度峰值超过TB/T 3548标准规定的超常载荷加速度范围,电机三相短路时各部件振动加速度变化较小。大功率永磁直驱机车电机两相短路工况存在降低部件使用寿命的风险,不宜长时运行,发生电机两相短路时应及时切换成三相短路,降低对机车性能的影响。
The influence of the two-phase short-circuit condition and the three-phase short-circuit condition are analyzed by the method of dynamic simulation analysis and vehicle test.Simulation analysis shows that compared with the normal working conditions,the three-way vibration acceleration of the motor is smaller,the vibration acceleration of the motor three-phase short circuit is smaller;the vibration acceleration of the motor,axle box,frame and car body in the vertical acceleration of the longitudinal acceleration exceeds the normal load acceleration specified in TB/T 3548,and the acceleration of the motor three-phase short circuit is smaller.The two-phase short circuit condition of high-power permanent magnet direct-drive locomotive motor has the risk of reducing the fatigue life of the parts,and it is not easy to run for a long time.When the two-phase short circuit occurs,the motor should be switched to three-phase short circuit in time to reduce the impact on the performance of the locomotive.
作者
陈吉永
CHEN Jiyong(CRRC Datong Co.,Ltd.,Datong 037038 Shanxi,China;Rail Transit Locomotive System Integration of Shanxi Key Laboratory,Datong 037038 Shanxi,China)
出处
《铁道机车车辆》
北大核心
2025年第5期149-156,共8页
Railway Locomotive & Car
基金
中国国家铁路集团有限公司科技研究开发计划(K2022J032)。
关键词
永磁直驱
电机短路
振动加速度
permanent magnet direct drive
electric short circuit
vibration acceleration
作者简介
陈吉永(1989-)男,高级工程师。
