magnetic levitation
Post on 19-Jan-2015
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Magnetic LevitationMagnetic Levitation-Murali Krishna.M-Murali Krishna.M
“Magnetic-Levitation” literally means floating in air.
Working concept behind Ultra-high speed / Supersonic trains Technology of Maglev
There are two primary types of maglev technology: Electromagnetic suspension (EMS) uses the attractive magnetic force of a
magnet beneath a rail to lift the train up. Electrodynamics suspension (EDS) uses a repulsive force between two magnetic
fields to push the train away from the rail.
Whenever a magnet sweeps across a conducting ladder, it tends to drag the ladder along with it
This horizontal tractive force is also accompanied by a vertical force of repulsion, which pushes away the magnet
This forms the basis for working of a magnetically levitated train
Working PrincipleWorking Principle
Pros and cons of different technologiesPros and cons of different technologies Technology Pros ConsEMS
EDS
Magnetic fields inside and outside the vehicle are insignificantProven commercially available technology with high speeds (500km/h)No wheels or secondary propulsion system needed
Large margin between rail and train enable highest recorded speeds (581km/h) and heavy load capacity
Recently demonstrated (Dec 2005) successful operation Using high temperature superconductors cooled with cost inexpensive liquid nitrogen
The separation between the vehicle and the guide way must be constantly monitored and corrected through computer systems to avoid collision due to the unstable nature of electromagnetic attraction
Strong magnetic fields would make the train inaccessible to passengers with magnetic storage media like hard-drives and credit cards, necessitating the use of magnetic shielding
Vehicle must be wheeled for its travel at low speeds
System per mile cost is still considered prohibitive
Track and Guiding SystemTrack and Guiding System
Vehicle on trackVehicle on track
Suspension and Propulsion systemSuspension and Propulsion system
50% reduction in Locomotive Weight 60% reduction in Power/ Fuel consumption No-Maintenance at all No-Friction (Air-resistance) Less Noisy Economical High Speeds Accidents are very rare Time is Saved Extremely Safe (even under Earth-Quakes) Complete Automatisation is possible (Driverless system)
Advantages of MaglevAdvantages of Maglev
Disadvantages of MaglevDisadvantages of Maglev
Installation Costs are too high because of Maglev guide paths
Lack with the existing infrastructure
Advancement in MaglevAdvancement in Maglev
Conclusions:Conclusions: Though installation being very costly, this system can prove to be
economical with overall consideration of
Energy consumption,
Pollution,
and Safety.
There is a lot of Future scope for Development and Implementation of such technology even in developing countries like INDIA.
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