The electric traction system is perhaps the most potent of several other traction systems, like steam and internal combustion (IC) engine type systems. Over all other systems, it brings numerous benefits, including fast start and stop, very reliable, pollution-free, simple to handle and easy vehicle speed.
Such traction modernization is very common in many traction networks, including metro or suburban railways, with the development of electrical drives for traction systems.
So What's the Method of Electric Traction?
A traction power is regarded a mechanism which produces vehicle acceleration in which a various devices such as diesel engine drives, steam engine drives, electric motors, etc. gain tractive or guiding reason.
The traction or locomotive of the railway vehicle providing the requisite traction power to move the train may also be identified. This helps develop the ability of the diesel, steam or electric power. It could be possible to differentiate a non-electric and electric traction as a traction systems.
At any point or all of the phases of railway movement, electric traction requires the use of electricity. Direct electric drive, battery powered drive and battery-operated fully electric vehicles are included in this system.
Electric motors have been used in this process to generate the movement of the vehicle and are driven by the extraction of energy from utilities or diesel generators or batteries.
Compared to non-electric traction systems, it has many benefits, such as cleaner and simpler to manage, no need for coal and water, quick speed control , high reliability , low maintenance and operating costs, etc.
Electric traction systems could be self-contained motors or vehicles that receive power from electricity distribution systems (substations), as described above. Locomotives that are self-contained include
Electrical drives powered by batteries
Electrical drives powered by diesel
Four Electric Traction Supply Systems
The method of supplying the locomotive unit with power is commonly referred to as the electrification system for traction. At current, four types of track electrification systems can be found on the basis of supply availability. Those are the kind of
Device of DC traction
Single phase traction system for AC
AC traction system in three steps
Composite Method of Traction
DC traction motors are a safer option compared to AC motors in the case of heavy trains that require regular and fast acceleration. In the same loading condition, the DC train absorbs less power due to the AC unit.
Electric traction makes it possible in using regenerative braking, in which the engines are used as brakes and become generators that turn the train's motion into electrical power, which is then fed back into the rails. ... Most devices have a characteristic voltage and a device frequency, in the case of AC control.
Core principles of AC Electric Locomotive
The discrete functions of this system are provided by the overhead contact cable, circuit breakers, pneumatic cylinder, transformer, three-phase transfer and risk, rectifier, alternator, blending reactor, etc.
The specifications of the ideal traction systems are: In addition to provide rapid acceleration, the ideal traction system should be able to develop high tractive effort. The stepper motor of the traction motors ought to be easy. On any road, without disruption, vehicles should be able to drive.
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