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# Magnetic levitation

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This is basic view of magnetic levitation, could be used as reference

This is basic view of magnetic levitation, could be used as reference

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### Transcript

• 1. Magnetic Levitation -Murali Krishna.M
• 2.  “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.
• 3. Working Principle 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
• 4. Pros and cons of different technologiesTechnology Pros ConsEMS Magnetic fields inside and outside the The separation between the vehicle and the vehicle are insignificant guide way must be constantly monitored and Proven commercially available corrected through computer systems to avoid technology with high speeds (500km/h) collision due to the unstable nature of No wheels or secondary propulsion electromagnetic attraction system needed Large margin between rail and train Strong magnetic fields would make the trainEDS enable highest recorded speeds inaccessible to passengers with magnetic (581km/h) and heavy load capacity storage media like hard-drives and credit cards, necessitating the use of magnetic shielding Recently demonstrated (Dec 2005) successful operation Using high Vehicle must be wheeled for its travel at low temperature superconductors cooled with speeds cost inexpensive liquid nitrogen System per mile cost is still considered prohibitive
• 5. Track and Guiding System
• 6. Vehicle on track
• 7. Suspension and Propulsion system
• 8. Advantages of Maglev 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)
• 9. Disadvantages of Maglev Installation Costs are too high because of Maglev guide paths Lack with the existing infrastructure