Maglev Trains

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  • Topic: Magnetic field, Shanghai Maglev Train, Transrapid
  • Pages : 5 (1345 words )
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  • Published : February 27, 2013
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Magnets & Transportation

Throughout the ages, evolution has taken place with every aspect of our life, including transportation. Historically, humans did not have the proper technology to move from place to place easily. However, the present has come depending mostly on electronics and technological items such as cars and airplanes for movement. Unfortunately, the increase in overpopulation has led to different issues concerning transportation that may cause pollution and insecurity. Humans need speed with transportation methods to prove efficiency, which leaved the safe steady methods unused. Many people have worked on inventing a transportation method that is economically friendly, fast and safe, which was the start of the outbreak of maglev trains; trains that are levitated from the ground with the use of electromagnetism. This whole idea was mostly based on electromagnetic induction and creation of a current. Such trains are safe when even going to a speed of 400 miles per hour, leaving our transportation issues solved.

Figure 1 (Shanghai Maglev Train)
Figure 1 (Shanghai Maglev Train)
Maglev trains are transportation methods that are levitated from the ground and move forward by the forces of attraction and repulsion magnets create. This means that there is no friction between the track and train, which leave the odds of over powering and combusting almost 0. These trains are most commonly known to be eco-friendly, fast, safe, and do not create a great amount of noise. Such traits were the reason maglev trains should be competitive with airlines. Then again the extremely great prices and economic cost (In short term) did not let much creation around the world and limited it to one line in Shanghai. (Magnetic levitation train - Definition) Figure 2 (Electromagnetic Suspension)

Figure 2 (Electromagnetic Suspension)

Maglev trains mostly work on the different techniques and main principles of physics and magnetism. The first would be electromagnetic suspension which is the levitation of an object created by changing the magnetic strength frequently. In addition, the electromagnetic suspension which is mostly the use of repulsion force for movement. Another technique that is essential would be the induct track which also aids in the levitation of train over track using permanent magnets. Basically, the simple meaning of electromagnetic impulsion would be that there are repulsion forces between the same poles and attraction forces between the opposite poles. Electromagnets are similar to other magnets; they attract metal objects, but the magnetic pull, in the case of electromagnets, is temporary. A small battery and a wire can easily create a temporary electromagnetic field. The same concepts may be applied with maglev trains, as the temporary powerful electromagnetic field between the large electrical power source, the metal rail system and the large guiding magnetic forces that are placed at the lower part of the train. (How Maglev Trains Work) (Electrodynamics Suspension)

Figure 3 (Levitation Preventing Friction)
Figure 3 (Levitation Preventing Friction)
There are different advantages to using maglev trains economically and environmentally. Within maglev trains, engines are replaced with electric coils that guide the trains throughout the magnetic railroad. One other advantage would be the lack of need for maintenance that mostly relates to steel trains that need changing parts and working on preserving parts from breaking or malfunctioning. In addition, as maglev trains work on levitation, there is no friction. This means that there will be no disturbing noise of wheels used for movement, and it is safer considering there will be no chance for malfunction of movement or with anything concerning machinery that work on overpowering with friction. Mostly, the important advantage would be speed, due to the lack of friction with the use of electromagnetic impulsion; the transportation speed would be...
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