“A locomotive is a type of rail transport that provides all the power to move or drive a train. It is powered by a locomotive engine. In this case, diesel, electricity, or steam power is used.
The components used in the powertrain of a locomotive diesel-electric engine are:
The diesel engine, which typically has a V-shaped configuration with 12, 16, or 18 cylinders, is commonly used in locomotives. However, it does not directly supply power to the axle. The engine’s flywheel rotation speed is usually more than 1000 RPM, and it is coupled with the alternator in the locomotive.
The alternator plays a crucial role. As the engine rotates, the alternator produces 770 volts and 4520 amps of current. The locomotive’s alternator has two coils:
In summary: Diesel Engine ➡ Alternator ➡ Transformer ➡ Rectifier ➡ Inverter ➡ Traction Motor ➡ Axle
Additionally, it’s worth noting that many locomotives use DC motors, in which case there is no need for an inverter.