根据机车主电路方式的不同，将电力机车的传动方式分为三种：a．直流传动方式：直流传动方式是指由直流电网电源直接向直流牵引电动机供电，以驱动机车运行的传动方式．它的优点是系统简单、调速方便、牵引性能好，其缺点是受电网电压和容量的限制，单机功率不大。因此，... According to the main circuit locomotive different ways to drive the electric locomotive is divided into three types: a. DC transmission mode: DC transmission mode refers to the DC power supply directly to the DC traction motor power supply to drive the locomotive running mode. Its advantage is the system is simple, convenient speed, traction performance, the disadvantage is limited by the grid voltage and capacity, stand-alone power is not. therefore,...