What is Electric Traction?
Electric traction means using the electric power for traction system (i.e. for railways,trams, trolleys etc).
Electric traction means use of the electricity for all the above machines. Now a days, magnetic traction is also used for bullet trains.and basically dc motors are used for electric traction systems.
What is Non electric traction system?
At any stage of a traction system that does not use the vehicle for the movement of electrical energy, known as non-electric traction system.
Steam engine drives the best example of a non-electric traction system and the actual electric traction systems used before the invention of the first locomotive system.
What is DC Traction System?
The traction system, to produce the necessary movement for the vehicle operates on electric motors are DC supply. Most DC series motors are used in the system. For trolley buses and trams, DC compound motors are used where regenerative braking is required.
What is Single Phase AC Traction System?
In this type of traction system, AC series motors are used to produce the vehicle’s propulsion. This system is 16.7 (ie, 16 2/3) or at a frequency of 25 Hz AC voltages 15-25KV uses. The low frequency range of the motor leads to better performance and more efficient operation.
What is Three Phase AC Traction System?
In this, the three-phase induction motors are used for the movement of the locomotive. The system generally at a frequency of either 16 2/3 or normal supply frequency AC 3000-3600V works.
This system forms the third phase of the track, the two phases are employed at the two overhead lines. These conductors are rated at high voltage substations and three-phase transmission lines are operated by electricity.