1异步电机牵引传动装置的优点目前,俄罗斯地铁电动车辆的主车型是装有直流牵引电动机和接触电阻控制装置的车辆。尽管直流电动机长期以来已经显现出了它的运营适宜性,但是它的缺点是不容忽视的。比如,整流子部件和电刷装置的可靠性较差;由于安装空间狭小其功率受到了限制;运营 Advantages of Asynchronous Motor Traction Transmission At present, the main type of Russian subway electric vehicle is a vehicle equipped with a DC traction motor and a contact resistance control device. Although the DC motor has long shown its operational suitability, its drawbacks can not be ignored. For example, commutator components and brush units are less reliable; their power is limited due to the small installation space;