随着交流传动调速技术的不断发展,直接转矩控制技术得到越来越多的关注,其在交流调速领域得到了广泛的应用。本文通过对城市轨道交通车辆的牵引/制动特性曲线,牵引电机、牵引逆变器进行设计,详细介绍了牵引系统的设计过程,最后以成都地铁1号线车辆为例,通过基于城轨车辆的直接转矩控制系统建模仿真,说明了直接转矩控制在城市轨道车辆上的优越性。 With the continuous development of AC drive speed control technology, direct torque control technology has received more and more attention, which has been widely used in the field of AC speed regulation. In this paper, the design of the traction system is described in detail by the traction / braking characteristic curve, traction motor and traction inverter of the urban rail transit vehicle. Finally, taking the Chengdu Metro Line 1 vehicle as an example, Of the direct torque control system modeling and simulation, illustrates the superiority of direct torque control in urban rail vehicles.