11-09-2014, 02:18 PM
Maglev
Maglev.ppt (Size: 1.76 MB / Downloads: 200)
Magnetic Leviation
Magnetic levitation is the use of magnetic fields to levitate a (usually) metallic object.
Manipulating magnetic fields and controlling their forces can levitate an object.
Using either Ferromagnetism or Diamagnetisim object can be leviated.
A superconductor is perfectly diamagnetic and electromagnets can exhibit varying levels of ferromagnetism
Principle of Magnetic Leviation
In the EMS-attractive system, the electromagnets which do the work of levitation are attached on the top side of a casing that extends below and then curves back up to the rail
Principle of Lateral Guidance
The levitation magnets and rail are both
U shaped(with rail being an inverted U).
The mouths of U face one another.
This configuration ensures that when ever a levitational force is exerted, a lateral guidance force occurs as well.
If the electromagnet starts to shift laterally from the center of the rail, the lateral guidance force is exerted in proportion to the extent of the shift, bringing the electromagnet back into alignment.
Conclusion
The MagLev Train: Research on this ‘dream train' has been going on for the last 30 odd years in various parts of the world.
The chief advantages of this type of train are:
Non-contact and non-wearing propulsion, independent of friction, no mechanical components like wheel, axle.
Maintenance costs decrease
.
The MagLev offers a cheap, efficient alternative to the current rail system. A country like India could benefit very much if this were implemented here. Further possible applications need to be explored