Why dc series motor used in train

Initially DC Series motors were used because of the traction advantage they offere i. They had to be overhauled freq. But other motors not having this property. For traction, dc series motors used to be used on account of the high starting torque they provided.

During starting train requires high starting torque.

Dc series motors are extensively used for electric traction because.

If the motor started without any load then armature current .

In earlier days, it was used in cranes , lift,etc. But nowadays after the widespread use of vvvf. High starting torque made them suitable for the high tractive effort required to set the train in motion. Depends on the type of locomotive and the torque or tractive effort required. Relation between torque and armature current for dc series motor is , Torque is directly proportional to square of armature current.

So for high loads , required load torque can be supplied by dc series motor. Thus for large loads like traction , dc series motors are used. A DC series motor is implemented for traction, for getting the required torque variations, whereas in other countries, induction motors are used. The word traction motor itself defines its meaning.

Modern engines use induction motors as the drives can produce sufficiently high torque. Alstom, Siemens provides heavy duty motors to Indian railways with copper conductor squrrel cage induction motors. As explain by Aniruddha, traction motors work like any other electric motor. Adding further to your knowledge, there are two types of motor with used in electric traction in India i. traction_motor url?

What type of dc motors used in electric trains and why? What are traction motor slidesharerailelectrica. Now before we go for details, one thing need to be voltages used are 1. The track electrification refers to the type of source supply system that is used 30 . It consists of two parts, a rotating armature and fixed field windings surrounding the mounted around shaft ratings komn dc series mtr used for traction is,, 750v.

It is often referred to as an AC series motor. The universal motor is very similar .