MAGLEV TECHNOLOGY.pptx

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MAGLEV TECHNOLOGYPresented by:T.SUNIL REDDY,141FA05116,ECEFriday, 14 April 2017SEMINAR

Friday, 14 April 2017SEMINAR

CONTENTSINTRODUCTIONFUNDAMENTALSELECTROMAGNETSSUPER LEVITRONMAGNETIC TRANSPORTATIONMAGLEV TRAINS SUPER CONDUCTORSMEISSNER EFFECTMAGLEV TRAINS VS CONVENTIONAL TRAINSMAGLEV SPACE PROPULSIONADVANTAGESLIMITATIONSAPPLICATIONSCONCLUSIONREFERENCES


INTRODUCTION

Any thing which may levitate(raise or float) by means of a magnetic power is simply called as magnetic levitation. Manipulating magnetic fields and controlling their forces can levitate an object.Using either Ferromagnetism or Diamagnetism object can be levitated.A superconductor is perfectly diamagnetic and electromagnets can exhibit varying levels of ferromagnetism


Fundamentals:

Different pole of two magnet attract with other.Same pole of two magnet repel with with other.One arrangement is here where one bar magnet is levitate.

SNSNSNSNATTRACTIONREPULSION


ELECTROMAGNETSPOWER SUPPLYMICRO CONTROLLERMETALPOWER SUPPLYMETALELECTROMAGNETELECTROMAGNET


SUPER LEVITRONThe principle is that two similar poles (e.g., two north's) repel, and two different poles attract, with forces that are stronger when the poles are closer. There are four magnetic forces on the top: on its north pole, repulsion from the base's north and attraction from the base's south, and on its south pole, attraction from the base's north and repulsion from the base's south. Because of the way the forces depend on distance, the north-north repulsion dominates, and the top is magnetically repelled.It hangs where this upward repulsion balances the downward force of gravity, that is, at the point of equilibrium where the total force is zero.


MAGNETIC TRANSPORTATIONIt is a system of transportation that uses magnetic levitation to suspend, guide and propel vehicles from magnets i.e., driving without wheels.


TYPES OF MAGLEV TRAINSBased on the techniques used for Levitation there are two types of Maglev trains


BASIC PRINCIPLE OF MAGLEV TRAINS

Maglev trains have to perform the following functions to operate in high speeds 1.Levitation 2.Propulsion 3.Lateral Guidance


Superconductivity occurs in certain materials at very low temperatures. When superconductive, a material has an electrical resistance of exactly zero. It is also characterized by a phenomenon called the Meissner effect. This is the ejection of any sufficiently weak magnetic field from the interior of the superconductor as it transitions into the superconducting state. SUPERCONDUCTORS


MEISSNER EFFECTMAGNETCONDUCTORTEMPERATURETIMETc

CONDUCTORMAGNET

TTTc


PROPULSIONA linear electric motor (LEM) is a mechanism which converts electrical energy directly into linear motion without employing any intervening rotary componentsLinear Induction Motor (LIM) is basically a rotating squirrel cage induction motor opened out flat. Instead of producing rotary torque from a cylindrical machine it produces linear force from a flat one.Speeds vary from zero to many meters per second and are determined by design and supply frequency.


MAGLEV RAILINGSThis train uses superconducting electric magnets in the vehicle to levitate and propel the train. These magnets are cooled by liquid helium or liquid nitrogen. This means that once electrified these magnets do not require additional energy.Each SCM contains 4 SC coils. The SCM features high reliability and high durability.The cylindrical unit at the top is a tank holding liquefied helium and nitrogen. The bottom unit is an SC coil alternately generating N poles and S poles.


Maglev TRAINS VS Conventional TrainsConventional TrainsRoutine Maintenance NeededEngine requires fossil fuelsSpeeds up to 110 mph

SNSNMaglev TrainsNo Friction = Less MaintenanceNo Engine = No fuel requiredSpeeds in excess of 300 mph

SNSN


MAGLEV SPACE PROPULSIONA Maglev launch system would use magnetic fields to levitate and accelerate a vehicle along a track at speeds up to 600 mph. The vehicle would shift to rocket engines for launch to orbit. Maglev systems could dramatically reduce the cost of getting to space because theyre powered by electricity, an inexpensive energy source that stays on the ground unlike rocket fuel that adds weight and cost to a launch vehicle.


ADVANTAGES

Less energy consumption because no rail-track friction.Requires no fossil fuel which can harm the environment.Less noise pollution since the train never hits the track.Maglev guideways and trains take up less space than conventional trains.


LIMITATIONS

Expensive guideway.Existence of conventional high speed train.Health concerns due to electromagnetic fields.Lack of investment.


APPPLICATIONS

MagLev Trains in INDIA.Electric generators- made with superconducting wire: They have a 99% efficiency and have about half the size of conventional generators of conventional high speed train.NASA plans to use magnetic levitation for launching of space vehicles into low earth orbit.The mining industry will also benefit from MagLev.


CONCLUSION

Magnetic levitation is very advantageous technology with promising future scopes to be used in almost every fields. Although it is yet to be completely explored but the existing technology can also significantly develop our life to a large extent. 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.


REFERENCES

[1] R. F. Post, The Inductrack; a simpler approach to magnetic levitation.[2] Richard F., RYUTOV, Dmitri D. Lawrence Livermore National Laboratory THE INDUCTRACK APPROACH TO MAGNETIC LEVITATION SYSTEM.[3] Post, Richard F., Kratz, Robert, Halbach Arrays for Maglev Applications, Lawrence Livermore National Laboratory. September 1999.[4] Post, Richard F., Inductrack Demonstration Model, Report UCRL-ID-129664,February 3, 1998.[5] Dusty Funk & Kyle Getsla Project Advisor: Dr. Anakwa, May 12, 2006; MAGNETIC LEVITATION FINAL REPORT.



Engineering

MAGLEV TECHNOLOGY.pptx