How do maglev trains speed up and slow down?

Inductrack uses a power source to accelerate the train only until it begins to levitate. If the power fails, the train can slow down gradually and stop on its auxillary wheels.



Maglev (magnetic levitation) trains speed up and slow down through the use of linear synchronous motors embedded in the track (guideway). Unlike a traditional train that uses an onboard engine to turn wheels, a maglev train is "pulled" forward by a series of traveling magnetic waves. To speed up, the guideway coils are energized with an alternating current (AC) that creates a magnetic field. This field continuously shifts ahead of the magnets on the train, creating an attractive force that pulls the train forward and a repulsive force that pushes it from behind. To slow down, the system employs regenerative braking by reversing the phase of the magnetic field; the train's kinetic energy is converted back into electrical energy, which is fed back into the power grid. Because there is no physical contact between the train and the rail, there is zero "rolling friction," allowing the magnetic propulsion system to accelerate the train to speeds exceeding 370 mph (600 km/h) with extreme precision and silence.

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Inside our MAGLEV train: The coil connects to the track by induction and switches on and off to propel the train Maglev Trains are trains that use magnetic levitation to move without touching the ground. This is done by magnets which both lift the train up from the ground and propel the train forward.

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The way maglev trains go forward or backwards is that there are coils lined up on the track in an order north pole south pole and so on and across from that is the opposite side of a magnet south pole north pole and so on.

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Maglev trains are designed to glide through the air. The front is curved so that the air slides over the train as it moves. This helps the train to move faster and reduces friction with the air. Maglev trains can move at speeds up to 300 miles per hour.

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Disadvantages of Maglev Trains Complications resulting in accidents will usually lead to high human fatalities. Maglev trains are much more expensive to construct than conventional trains because of the high number of superconducting electromagnets and permanent magnets required, which are usually very costly.

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This reaction between the magnets creates a magnetic field. The field lifts the train off of the track. This lets air flow between the train and the guideway. The trains never touch the track; they hover just above the track.

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And also because it can travel up higher ascending grades (up to 10 percent), compared to conventional trains (up to 4 percent or less), maglev trains can also reduce the need to create new tunnels or to level the landscape to build its tracks.

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The magnetic field generated by the Superconducting Maglev has no impact on health, as it is controlled with various measures to keep it below the standards established in international guidelines (ICNIRP Guidelines). The standards are set at approx. 1/5 to 1/10 the level that could affect the human body.

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There are several disadvantages to maglev trains: - Maglev guide paths are more costly than conventional steel railway tracks. Because the magnetic coils and material used in this setup are very costly. - Maglev trains require an all-new set up right from the scratch.

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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 [6]. In the area of noise emissions, maglev trains are superior in every way to wheel/rail systems, not to mention airplanes.

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There are guidance magnets and levitation magnets. The guidance magnets are designed to maintain the car alignment, never letting any physical contact. Ther is transverse inclination of the rails too, which helps reducing the curve of the turn.

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Present Maglev systems cost 30 million dollars or more per mile. Described is an advanced third generation Maglev system with technology improvements that will result in a cost of 10 million dollars per mile. Plotkin, D.; Kim, S. Lever, J.H.

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The Maglev has significantly lower CO2 emissions compared too the traditional InterCity train at 300 kph, mainly due to its lower energy usage. At 400 kph the Maglev has almost half the CO2 emissions than an average motor car and a massive five and a third times less than a short haul airline flight.

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While high-speed maglev infrastructure is relatively expensive to build, maglev trains are less expensive to operate and maintain than traditional high-speed trains or planes. At higher speeds, most of the power needed is used to overcome air drag.

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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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Background on Maglev Train, Vactrain, Hyperloop They are even faster than regular maglev trains, but are even more expensive to build. Hyperloops are a proposed type of transportation that would use a low-pressure tube to send people or cargo through a tube at high speeds.

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