Train Transrapid Maglev — Magnetic Levitation — is

Train Transrapid Maglev - «Magnetic Levitation» - is a train that is held over the roadway, driven and controlled by the power of the electromagnetic field. Such a composition, in contrast to conventional trains in motion does not touch the surface of the rail. As between the train and there is a gap of surface motion, friction is eliminated, and the only retarding force is the aerodynamic resistance. Refers to the cartage. Velocity reached by train on a magnetic cushion, comparable with that of the aircraft and allow to compete with air travel in the short-and medium areas (1000 km).

At the moment there are three main technology of magnetic suspension trains: 1. In the superconducting magnets (electrodynamics suspension, EDS) 2. On the electromagnets (electromagnetic suspension, EMS) 3. Permanent magnet, is a new and potentially the most cost-system. Composition levitates due to repulsion of identical magnetic poles, and, conversely, the opposite poles of attraction. The movement is a linear motor, located either on the train or on the road, or there and there. A serious problem of designing a great weight of powerful magnets, because it requires a strong magnetic field to maintain the air of a massive structure. The most active development maglev are Germany and Japan.

Maglev trains need strong magnetic fields, faster changing fields, thicker material with lower resistivity such as copper, silver, aluminum etc… in order to go fast. (EMS) "Transrapid International"

Method: Electromagnetic Suspension is based on magnetic attraction; it is very complex and somewhat unstable.

Method: Electrodynamics Suspension is based on the repulsion of magnets. The magnetic levitation force balances the weight of the car at a stable position. It is for this reason that the EDS system is believed to be safer than the EMS system.

1. The high cost of building and maintaining tracks (the cost of building one kilometer of maglev track, comparable to the sinking of a kilometer underground tunnel closed method). 2. Produced by the magnetic suspension electromagnetic field can be harmful to the train crews and / or nearby residents. Even traction transformers used in AC electrified railways, bad for drivers, but in this case the field strength is obtained by an order of magnitude larger. It may also be maglev line will not be available for people using pacemakers 3. Rail road-width, rebuilt under the high-speed traffic, remain available for conventional passenger and commuter trains. Way maglev for anything else does not fit, need more ways for low-speed communication.

August 11 th, 2006 at 14: 20, shortly after departure from the station, "Lungyang lu» (龙阳路 long yang lu), Shanghai, batteries caught fire in the Shanghai Express Transrapid. The evacuation of passengers, arrived at the scene and the fire department to 15: 40 fire was extinguished, victims and victims. As a result of the investigation it was found that the cause was a malfunction in the electrical systems maglev that occurred in the established on-board battery module. September 22, 2006 around 10: 00 local time on the test track in Emsland Transrapid company (Germany), the accident occurred. During the test at a speed of 200 kilometers an hour hit the road appeared on the technical train. The accident killed 23 people and another ten were injured. After nearly a year investigating the cause of the accident has been named human error, the blame laid on three employees Transrapid.

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