In electrical locomotive engines, the DC series motors is being used as tracti

In electrical locomotive engines, the DC series motors is
being used as traction motor. But in new engines like in
WAP7 & WAG9 the 3-phase squiral cage induction motors has
replaced them. So can someone tell me the advantages of
induction motor over dc seris motor in engines points of
view....???

Question Posted / lokesh180690

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In electrical locomotive engines, the DC series motors is being used as traction motor. But in new..

Answer / Anju Rana

Answer: Induction motors have several advantages over DC series motors in electric locomotives, particularly when considering new engine designs like WAP7 and WAG9. Some key benefits include:
1. Higher efficiency due to reduced copper losses in the rotor windings.
2. Simplified motor control as induction motors can be controlled using power electronics without needing a separate DC power supply.
3. Reduced maintenance requirements, as there is no commutator or brushes to wear out in an induction motor.
4. Better traction performance due to the ability of an induction motor to produce high torque at low speeds.

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