Magnetic levitation is a system of train transportation that uses two sets of magnets, one set to push the train up off the track and another set to move the elevated train ahead taking an advantage of lack of friction.
This was first developed on basis of full size working model of linear induction motor by ERIC LAITHWAITE, professor at imperial college, LONDON. In 1970, he discovered a new arrangement of magnets, the magnetic river that allowed a single linear motor to produce both lift and forward thrust allowing a maglev system to be built with single set of magnets.
The first commercial operation was officially opened in 1984, BIRMINGHAM, ENGLAND FROM AIRPORT TO RAILWAY STATION.
Which was Operate at elevated height of the level up to 600m in between of the monorail tracks, which running up to speed of 26mph, but it was closed in 1995 due to reliability issues.
ELECTROMAGNETIC SUSPENSION– electronically controlled electromagnets in the train attract it to a magnetically conductive tracks usually steel. The system is typically arranged on a series of C shaped arms, with upper portion of arm attached to the vehicle and lower inside edge consisting magnets. The rail is situated inside the C, between the upper and lower edges.
ELECTRODYNAMIC SUSPENSION– uses superconducting electromagnets or strong permanent magnets that creates a magnetic field which induces current in nearby metallic conductors when there is relative movement which pushes and pulls the train towards the designed levitation position on the guide way. The levitation takes place through repulsive and attractive force between this magnetic fields, the biggest advantage of this is they are dynamically stable and the magnets create strong forces to return the system to the original position.
Consider it will compete with aircrafts, it must offer a level of service, price and safety that will swap away customers from current available modes of transport. It also finds the way to cope up with regulations of the bureaucrats of various countries and government to get approval for building their infrastructure rather than the currently approved plans.
This blog is authored by Vamsikrishnan- Technocrat Club