GENERAL PROFECIENCY REPORT ON

MAGLEV TRAINS

Submitted by-Akshat Jain

Roll No.-13/167Trains that fly on air.

What is meant by Maglev?Maglev = Magnetic + Leviation

Any thing which may levitate(raise or float) by means of a magnetic power is simply called as magnetic

levitation.

Motion of the Maglev train

• Purely based on magnetism and magnetic fields

•Magnetic fields produced by powerful electromagnets

•Wheels eliminated from the train allowing it to essentially move in the air frictionlessly

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

Magnetic leviation systemBased on the techniques used for

Levitation there are three types of Maglev trains

1. Electro magnetic Suspension 2. Electro dynamic Suspension

3. Inductrack

Electromagnetic suspension

•The electromagnets on the underside of the train pull it up to the ferromagnetic stators on the track and levitate the train.

•The magnets on the side keep the train from moving from side to side.

Electrodynamic Suspension

Magnetic field produced by superconducting magnets located at the bottom of the train

•The train is levitated by the repulsive and attractive force between the magnetic fields of the train and the guideway

inductrack

The major difference between the Inductrack and the Electrodymanic

System is the use of permanent magnets rather than superconducting magnets.

PROPULSION•An alternating current is ran through electromagnet coils on the guide walls of the guide way. This creates a magnetic field that attracts and repels the superconducting magnets on the train and propels the train forward.

•Braking is accomplished by sending an alternating current in the reverse direction so that it is slowed by attractive and repulsive forces.

GUIDANCEThe Maglev train is a noncontact system

that requires a guiding force for the prevention of lateral displacement

When one side of the train nears the side of the guideway, the super conducting magnet on the train induces a repulsive force from the levitation coils on the side closer to the train and an attractive force from the coils on the farther side.

This keeps the train in the center.

COMPARISION OF MAGLEV AND WHEEL TRAINMAGLEV IRON WHEELNo mechanical contact

No possibility of derailment

Mantainence very little

Travels at very high speed

Contact between wheels and rails

Derails from a minor defect

Needs mantainence quite regularly

Slower than maglev trains

Advantages•The maglev tracks take up a lot less land, because they are elevated. This also reduces the amount of collisions and accidents.•Maglev trains use far less energy than other types of transportation.•Maglev trains do not pollute•Maglev trains are much faster• Less maintenance

DisadvantagesCost and infrastructureWeight of the electromagnets is also an issueFeasible only in urban areas

RECORDS!!

On 21st April, 2015 a maglev train operated by central Japan Railway has set a world record of 603 kmph in a test run surpassing its previous record of 581 kmph.

Conclusion

More energy efficient and environment friendly than present day railway system

Maglev will have a positive impact on sustainability.

Maglev trains are the future of the transportation world.

Thank You