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A SYNOPSIS ON
MAGNETICALY LEVITATED TRAINS (MAGLEV) ”
“
SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENT FOR THE AWARD OF THE DEGREE OF
BACHELOR OF TECHNOLOGY IN
ELECTRONICS & COMMUNICATION ENGINEERING
Submitted to:Lokesh Sharma (Seminar Coordinator)
Submitted to:K.K.Bhargava (HOD of ECE Dept.)
Submitted by:Ashish Kumar Gupta 08EMTEC016 (ECE)
Maharishi Arvind INSTITUTE OF ENGINEERING & TECHNOLOGY,JAIPUR
RAJASTHAN TECHNICAL UNIVERSITY, KOTA 2011-2012
INTRODUCTION MAGNETIC LEVITATION
Magnetic levitation, maglev, or magnetic suspension is a method by which an object is suspended above another object with no support other than magnetic field .The electromagnetic force is used to counteract the effects of the gravitational force.
A substance which is diamagnetic repels a magnetic field. All materials have diamagnetic properties, but the effect is very weak, and usually overcome by the object's paramagnetic or ferromagnetic properties, which act in the opposite manner. Any material in which the diamagnetic component is strongest will be repelled by a magnet, though this force is not usually very large. Diamagnetic levitation can be used to levitate very light pieces of pyrolytic graphite or bismuth above a moderately strong permanent magnet. As water is predominantly diamagnetic, this technique has been used to levitate water droplets. Magnetically Levitated Trains (MAGLEV)
The principal of a Magnet train is that floats on a magnetic field and is propelled by a linear induction motor. They follow guidance tracks with magnets. These trains are often referred to as Magnetically Levitated a train which is abbreviated to Maglev. Although maglev don't use steel wheel on steel rail usually associated with trains, the dictionary definition of a train is a long line of vehicles traveling in the same direction - it is a train.
A super high-speed transport system with a non-adhesive drive system that is independent of wheel-and-rail frictional forces has been a long-standing dream of railway engineers. Maglev, a combination of superconducting magnets and linear motor technology, realizes super high-speed running, safety, reliability, low environmental impact and minimum maintenance TECHNOLOGY AND WORKING OF MAGLEV TRAINS
Basically the construction of the maglev train depends on 3 different working forces. They are,
LEVITATION FORCE PROPULSION FORCE LATERAL GUIDING FORCE
MAGLEV METHODS
Repulsion between like poles of permanent magnets or electromagnets.
Repulsion between a magnet and a metallic conductor induced by relative motion.
Repulsion between a metallic conductor and an AC electromagnet.
Repulsion between a magnetic field and a diamagnetic substance.
Repulsion between a magnet and a superconductor.
Attraction between unlike poles of permanent magnets or electromagnets.
Attraction between the open core of an electromagnetic solenoid and a piece of iron or a magnet.
Attraction between a permanent magnet or electromagnet and a piece of iron.
Attraction between an electromagnet and a piece of iron or a magnet, with sensors and active control of the current to the electromagnet used to maintain some distance between them.
Repulsion between an electromagnet and a magnet, with sensors and active control of the current to the electromagnet used to maintain some distance between them.
