城市轨道车辆异步牵引电机额定参数研究

A Study on the Rated Parameters for Asynchronous Traction Motor of Metro Vehicle

城轨车辆用异步牵引电机处于短时过载、重复的工作状态，其额定点参数的确定十分重要。本文在未知电机的情况下，对电机额定转速、额定功率、最大转矩倍数等重要参数的确定方法进行了探讨。对城轨车辆的异步牵引电机，设计时只满足额定功率是不够的，还必须满足额定点的最大转矩倍数。

It is important to determine the rated parameters for the trac tion mot or of metro vehicle, which fall into the shorttime overloading and repetiti ve working state. After discussing the calculation for the rotated speed and pow er, the author makes a deduction for the maximum torque multiple, and argues tha t it is not sufficient to meet the demands of the rated power only while in the design.