How are maglev trains powered?

Instead of using fossil fuels, the magnetic field created by the electrified coils in the guideway walls and the track combine to propel the train. If you've ever played with magnets, you know that opposite poles attract and like poles repel each other. This is the basic principle behind electromagnetic propulsion.



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Maglev train systems use powerful electromagnets to float the trains over a guideway, instead of the old steel wheel and track system. A system called electromagnetic suspension suspends, guides, and propels the trains. A large number of magnets provide controlled tension for lift and propulsion along a track.

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Even if the power goes out, levitation forces keeps the train in the air while it is traveling at high speed. The vehicle comes safely to a stop rather than suddenly falling onto the track.

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Maglev trains are “driven” by the powered guideway. Any two trains traveling the same route cannot catch up and crash into one another because they're all being powered to move at the same speed. Similarly, traditional train derailments that occur because of cornering too quickly can't happen with Maglev.

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Maglev trains require very straight and level tracks to maintain high speeds. This necessitates extensive viaducts and tunneling, making construction costly.

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SNCF, widely regarded as one of the best high-speed rail operators in the world, has had 4 profitable years and 5 loss-generating years since 2012. The Shanghai Metro Maglev has never been profitable. Clearly, there is an issue with passenger transport. No mode of transportation can consistently generate profits.

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In addition, the energy consumption can be further reduced by use of regenerative braking, an energy recovery mechanism where the kinetic energy of the train can be regained when the train slows down. Maglev is also a very cheap and efficient mode of transportation.

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Cost concerns over innovative rail The primary challenge facing maglev trains has always been cost. While all large-scale transportation systems are expensive, maglev requires a dedicated infrastructure including substations and power supplies and cannot be integrated directly into an existing transportation system.

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Even with regard to earthquakes, maglev trains are considered to be very secure rapid transit systems.

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Maglev trains do not create direct pollution emissions and are always quieter in comparison to traditional systems when operating at the same speeds.

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It is a maglev (magnetic levitation) line using partly evacuated tubes or tunnels. Reduced air resistance could permit vactrains to travel at very high (hypersonic) speeds with relatively little power—up to 6,400–8,000 km/h (4,000–5,000 mph). This is 5–6 times the speed of sound in Earth's atmosphere at sea level.

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On 22 September 2006, a Transrapid magnetic levitation (or maglev) train collided with a maintenance vehicle near Lathen, Germany, killing 23 people. It was the first fatal accident involving a maglev train.

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Hermann Kemper (* April 5, 1892 Nortrup, Germany, in the district of Osnabrueck, † July 13, 1977) was a German engineer and is considered by many the inventor of the basic maglev concept. In 1922, Hermann Kemper began his research about magnetic levitation.

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An air train in China is said to be the world's first suspended maglev train system that uses permanent magnets. It can operate without power, gliding through the air without ever making contact with the track above it — and there's no rail underneath it.

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