High Speed Train in India
Railways were the first form of rapid land transportation. They monopolized the carrying percentage of passenger traffic till cars and airlines became popular in the early mid of 20th century. Speed was always the main challenging factor for railroads and constant efforts are being made increase the travel speed and decrease the travel time of passengers.
Speed train could cut the travel time between metro areas, alleviate traffic congestion, boosting economic growth and reducing greenhouse gas emission.
Speed train could cut the travel time between metro areas, alleviate traffic congestion, boosting economic growth and reducing greenhouse gas emission.
High speed rail transport is quicker than traditional rail traffic. It uses an integrated system of specialized rolling stock and tracks. The first speed rail was introduced in Japan during the year, 1964. And it was known as a bullet train over there. High speed trains ply on standard gauge tracks of continuously welded rail on grade- separated right-of-way that incorporates a large turning radius in its design. Many countries have developed high speed rail to connect major cities. High speed rail is usually designed for passenger travel. It can also be used for freight service.
High Speed train moving from Delhi to Agra:
This train is having a speed of 160kmph. It is equipped with an electric locomotive of 5,400HP. One can reach from Delhi to Agra in just 90 minutes. Normally it takes 2-3 hours to reach Agra from Delhi. When it was test trialed, it took 100 minutes instead of 90 minutes. It reached Agra at around 1 p.m. Senior railway officials including Commissioner Railway Safety and Divisional Railway Manager of Delhi and Agra, were present in the train for trial run.
This train is having a speed of 160kmph. It is equipped with an electric locomotive of 5,400HP. One can reach from Delhi to Agra in just 90 minutes. Normally it takes 2-3 hours to reach Agra from Delhi. When it was test trialed, it took 100 minutes instead of 90 minutes. It reached Agra at around 1 p.m. Senior railway officials including Commissioner Railway Safety and Divisional Railway Manager of Delhi and Agra, were present in the train for trial run.
Real High Speed Trains
India has one of the largest rail networks in the world. But, it does not have any high speed rail line which can give a speed of 200 km/h or more. Currently India is focusing on high speed railway tracks so that Indian rails can run faster on current tracks with a maximum speed of 160 to 200 km/h, with an average of 130km/h.
Few of the countries in the world are using powerful electromagnets to develop high speed trains. These trains are known as ‘maglev trains’. ‘Maglev is short form of Magnetic Levitation. It means that these trains will practically float over guideways using the basic principles of magnets to replace the old steel wheel and track trains.
Few of the countries in the world are using powerful electromagnets to develop high speed trains. These trains are known as ‘maglev trains’. ‘Maglev is short form of Magnetic Levitation. It means that these trains will practically float over guideways using the basic principles of magnets to replace the old steel wheel and track trains.
Electromagnetic suspension:
It is the typical Magnetic property that opposite poles attract each other and similar poles repel each other. This forms the basics of electromagnetic propulsion. Electromagnets, property wise, are similar to other magnets but unlike natural magnets they acquire magnetic property by application of electrical power. They attract metal object but, the magnetic pull remains temporary and over the duration of applied electrical power. It works by simple rule. An electromagnet can be created by connecting a copper wire to the positive and negative ends of an AA, C or D-cell battery which creates a small magnetic field. If one disconnects either end of the wire from the battery, the magnetic field is taken away. The magnetic field created this way forms the idea of a maglev train rail system. There are three components to this system : a electrical power source, metal coils lining on a guideway or track and large magnets attached to the underside of the train.
It is the typical Magnetic property that opposite poles attract each other and similar poles repel each other. This forms the basics of electromagnetic propulsion. Electromagnets, property wise, are similar to other magnets but unlike natural magnets they acquire magnetic property by application of electrical power. They attract metal object but, the magnetic pull remains temporary and over the duration of applied electrical power. It works by simple rule. An electromagnet can be created by connecting a copper wire to the positive and negative ends of an AA, C or D-cell battery which creates a small magnetic field. If one disconnects either end of the wire from the battery, the magnetic field is taken away. The magnetic field created this way forms the idea of a maglev train rail system. There are three components to this system : a electrical power source, metal coils lining on a guideway or track and large magnets attached to the underside of the train.
The big difference between a maglev train and a conventional train is that maglev trains do not have an engine. It does not use fossil fuel to power itself . Rather, it runs because of magnetic field. The magnetized coil running along the track is called a ‘guideway’ and is responsible to repel the large magnets on the train’s under carriage. This allows the train to levitate between 0.39 to 0.93 inches ( 1 to 10 cm) above the guideway. Once the train gets levitate, power is supplied to the coils within the guideway walls to create a special regime of magnetic fields. This helps to create requisite pull and push to glide the train along the guideway. The electric current supplied to the coils of the guideway wall is altered continuously to change the polarity of the magnetized coil. This change in polarity results to pull the vehicle forward. The magnetic field behind the train is kept at high level to provide more forward thrust.
Maglev train eliminate friction as it floats on the air. This lack of friction and aerodynamic design of these trains allow them to reach up to the speed of 310 mph or 500 kph. Developers say that maglev trains will eventually connect cities that are 1,000 miles apart. With 310 mph speed. With this High Speed Train one can reach in two hours from Paris to Rome.
Electrodynamic Suspension (EDS):
Japanese engineers are developing a competing version of maglev trains that use an electrodynamic suspension system (EDS). It is also based on the repelling force of magnets. The key difference between German and Japanese maglev trains is that Japanese trains use a special electromagnet which is super cooled and super conducting . These magnets are having special property which helps them retaining electromagnetic property even after the power supply has been shut off. This system of Japan saves energy by chilling the coils at frigid temperatures. However, the system to cool the coils can itself be very expensive .
SOURCE:
http://www.brookings.edu/events/2014/05/14-japan-high-speed-train-technology
http://en.wikipedia.org/wiki/High-speed_rail
http://en.wikipedia.org/wiki/High-speed_rail_in_India
http://science.howstuffworks.com/transport/engines-equipment/maglev-train.htm
http://science.howstuffworks.com/transport/engines-equipment/maglev-train2.htm
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