Which type of motor is used in trains?
DC motors
DC motors are used on trains is because of their high torque and good speed control. Compared to AC motors, DC motors can provide industry applications with a fine balance of strong starting torque and controllable speed for seamless yet precise performance.
How does Metro train get power?
As it approaches the station, it starts braking from a distance. The kinetic energy so produced is converted into electrical energy which is called regeneration. Daily, the power consumed by the Byappanahalli-MG road stretch is 23,051 units. Of this, the train takes in 10,512 units which is 45.6%.
Do trains use AC or DC?
Direct current, either directly supplied, or converted from AC onboard a train, is the most commonly used. This is because, according to railsystem.net, “DC consumes less energy compared to an AC unit for operating the same service conditions.
Are locomotives AC or DC?
All in all, the AC traction locomotive offers about twice the amount of adhesion as a DC unit. Therefore, a modern lightweight AC locomotive such as the RX500 can provide as much or more tractive effort than an old style DC unit like the SW1200 which weighs 60% more.
Which is more preferable AC or DC?
Answer: Ac is more preferred than dc because it is easy to maintain and change the voltage of ac for transmission and distribution purpose. Plant cost of ac transmission is much lower compared to dc transimission. When fault occurs it is easy to interrupt ac supply.
What kind of traction motors are used in Metro Trains?
600-1200V for urban railways like tramways and light metro trains. 1500-3000V for suburban and mainline services like light metros and heavy metro trains. Due to high starting torque and moderate speed control, the DC series motors are extensively employed in the DC traction systems.
Why are DC series motors used in trains?
Initially DC Series motors were used because of the traction advantage they offered, i.e, high starting torque. Their maintenance used to be a cumbersome process because of the involvement of Brushes and Commutators. They had to be overhauled frequently thus surmounting to the downtime.
Which is type of motor does Delhi Metro rail engine use, AC?
The Delhi Metro uses 25 kV AC overhead lines on the ground-level and elevated routes, and uses a rather unusual “rigid catenary”, or overhead power rail, in the underground tunnel sections. Metro rails in India don’t use an ‘engine’ in the traditional sense of the understanding.
What kind of motor is used in railway locomotives?
These locos constitute a huge chunk of IR’s locos (easily above 70%) WAP-5/7 and WAG-9 have three phase induction motors as their Traction motors. Amongst Diesel locos, the locomotives that are usually called alcos (WDM-2/3A/3D/3F, WDG-3A WDP-1/3A) have DC traction motors while the EMD’s (WDP-4/4B/4D and WDG-4/4D) have three phase induction motors.