Maglev-1
.docxSlide 1) Today we’re going to tell you about MagLev technology.
Slide 2) Maglev (derived from magnetic levitation) is a system of train transportation that uses two sets of magnets, one set to repel and push the train up off the track, then another set to move the 'floating train' ahead at great speed taking advantage of the lack of friction.
Slide 3) Maglev technology was invented by British electrical engineer Eric Laithwaite. In the early 1970s, Laithwaite discovered a new arrangement of magnets, the magnetic river, that allowed linear motors to lift and forward thrust special rolling stock.
Slide 4) Support System
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The electromagnets on the underside of the train pull it up to the ferromagnetic stators on the track and levitate the train.
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The magnets on the side keep the train from moving from side to side.
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A computer changes the amount of current to keep the train 1 cm from the track.
Slide 5) Сравнение с обычным. Maglev transport is non-contact and electric powered.
No mechanical contact means no friction between rail and train No derailment because of magnets force Lower maintenance costs in case of less bearings and axles comparing to wheeled rail systems Maglev allows higher top speeds than conventional rail, but experimental wheel-based high-speed trains have demonstrated similar speeds.
Contact between rails and wheels causes friction that prevent train to reach higher speed Derails from a minor defect presents a lot of safety requirements Traditional rail is subject to mechanical wear and tear that increases rapidly with speed, also increasing maintenance. Because the major source of noise of a maglev train comes from displaced air rather than from wheels touching rails, maglev trains produce less noise than a conventional train at equivalent speeds.
Slide 6) Плюсы и минусы
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The maglev tracks are elevated so that reduces amount of collisions and accidents (elevated track) Maglev trains do not pollute environmental Maglev trains use far less energy than the other types of transportation because the part of the track that is used will be electrified so no energy is wasted.
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Elevated track causes high construction costs High-speed rail track can be used by suburban and intercity trains, but maglev track cannot.
Slide 7) Будущие и существующие проекты
The Shanghai Maglev connects Shanghai Pudong International Airport and Longyang Road Station (in the outskirts of central Pudong), where passengers can interchange to the Shanghai Metro to continue their trip to the city center. Top operational commercial speed of this train is 431 kmph. Estimated time of journey is 8 minutes. It cost $1.2 billion to build. The line's balance of payments has been in huge deficit since its opening.
Construction of Chuo Shinkansen began in 2014. It was expected to begin operations by 2027. The plan for the Chuo Shinkansen bullet train system was finalized based on the Law for Construction of Countrywide Shinkansen. The Linear Chuo Shinkansen Project aimed to operate the Superconductive Magnetically Levitated Train to connect Tokyo and Osaka by way of Nagoya, in approximately one hour at a speed of 500 km/h (310 mph). The full track between Tokyo and Osaka is to be completed in 2045.
Many maglev systems have been proposed in Asia, Australia and Europe. Such countries as Israel, Italy, South Korea, Australia