Electric Trains Case Study

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Electrical trains transport systems are the most widely used forms of transport especially in major cities all over the world (Mraz, 2011). They are more efficient and enable transportation of a big number of passengers at once. This research focuses on electric trains that use the 25Kv AC railway electrification system.
The current state-of-the-art electric train systems
High-speed (HS) train technology is the current state-of-the-art in electric train transport systems. High-speed trains are inter-city trains that operate at high speeds and have traction motors in almost all the cars, that is the driving car and the passenger cars, which allow better distribution of force as well as making the ride more comfortable. The distribution of power
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The 57 three-car trains, which use 25Kv AC power, were rolled out in 2015 where they serve daily across the Auckland's city electrified rail network. The trains were purchased from Spain and should carry up to 232 seated passengers each. The trains meet international standards for ensuring the safety of passengers and the crew. They have outer shells made of stainless steel …show more content…
Regenerative braking is also used by most electric trains where the train’s kinetic energy is turned back to electric power which is returned back to the supply system.The 25Kv AC is also different from other trains that use high voltage direct current (DC). While electromagnetic radiation is inherent with the 25Kv AC trains, trains with the DC power supply do not. They also differ in that the DC trains do not experience the power factor problems which are common with the 25Kv AC trains (Fink and Beatty, 1978, pp. 19).
Advantages and Disadvantages
The advantages of the electric trains are very many. They include a reduction in carbon footprint and energy consumption as well the capital cost of renewal. The sensitivity to snow and track maintenance and renewal costs is also reduced. The performance of the system is increased enabling the size of the fleet to be reduced as well as the journey size.
The disadvantages include a high cost of electrification, vulnerability since the overhead electrification can suffer disruption due to high winds which cause the
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train's pantograph to be entangled to the catenary or minor mechanical faults (Fink and Beatty, 1978, pp.

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