Maglev of ShanghaiA train of magnetic levitation or Maglev (Magnetic levitation transport) is a vehicle like a train that runs on a high line over the floor and is proposed by the attractive power and the repulsive of the magnetism using superconductors. Because of the disconnection between the vehicle and the line, there isn’t a unique existing friction between the train and the air. Due to this, the train can reach fantastic speeds, having less noise and less energy spent.
It might even compete with the air lines, but its high cost limited its production so far, to the existence of one only commercial line, the transrapid of Shanghai. That line makes the travel of 30 km to International Airport of Pudong in 8 minutes.
Technology
There are 3 kind of primary technologies applied in Maglev. One is based in the magnets superconductors, the other is based in the controlled reaction of the electromagnets, the more recent is the more economic that use permanents magnets (Indutrack).
Japan and Germany are the countries which developed this technology. They’ve presented several projects. One of them is that the train levitates by the repulsive forces of the identical poles or the attractive forces with different poles of the magnets. The train is propulsed by a linear motor, installed in the line, in train or in both. Electric bobbins are installed all over the line to produce a magnetic field needed to move the train, and this line might have a larger cost.
China
The maglev train of Shanghai is a Project imported from Germany, capable of a speed of 430 km/h and the Max speed is 501 km/h, connecting Shanghai to the International Airport of Pundong since March 2004.
Sem comentários:
Enviar um comentário