Why do locomotives use electric motors

This means that precise speed control is vital, allowing them to adapt smoothly and easily to different conditions. There are many advantages of DC motors , making them an appropriate solution for use on trains across the globe. Fantastic speed control: DC motors are known for their great speed control, offering great precision and safety that trains require. Broad speed variation can be achieved by changing the armature or field voltage. Smooth operation : DC motors can work in accordance with many applications, including trains, to provide the necessary speed and power required.

Being a vital method of transport, trains must be able to start and stop efficiently to both save time and in case of danger. High torque : As a train is considered a heavy load, DC motors are well suited due to their high torque.

This means that the motor can drive a consistent level of power over longer periods of time, ideal for trains that operate over 12 hours per day. Parvalux offers a diverse range of DC motor solutions, including a permanent magnet and brushless DC motors. We have over 70 years of experience in producing DC motors. The locomotive was returned to UP after the tour and repainted to its traditional yellow in The vital statistics can be found on the Streamliner page.

Also, be sure to check out the E-9 Photo Gallery. Union Pacific has retained only one of its 47 Centennial diesel-electric locomotives, No. The Centennials were the largest diesel-electric locomotives ever built. Actually comprising two engines on one frame, they delivered 6, horsepower. Designed and built exclusively for Union Pacific Railroad, the units were named in honor of the railroad's centennial anniversary celebration in Accordingly, they were numbered in the series, from to The first Centennial was delivered in , in time to participate in the Golden Spike celebration in Utah.

The remaining units were delivered during the next two years. The engineer controls the power output of the locomotive by using an electrically-controlled throttle. Main generator excitation increases, increasing its electrical output. Each traction motor C is directly geared to a pair of driving wheels. Starting a heavy train from a dead stop would burn out a clutch in a brief time.

Modern locomotives can have HP in just one engine. The collapse of ALCO happened as a result of business problems, General Motors and General Electric were able to secure deals with Union Pacific and other railroads using both the fact that they could act as a bank providing the loan. Diesel-Electric Locomotives 1. History 1. How They Work: Below: a simple diagram of the major parts of an original s era direct current power diesel electric locomotive.

Diesel Locomotives use electricity to drive forward motion despite the name 'diesel'.