MAGLEV (Magnetically Levitated Vehicles)

Presented by

Vikas Kurariya

Vikas Kurariya

Types of MAGLEV system

EMS (Electro-Magnetic Suspension)

EDS (Electro-dynamic Suspension)

http://www.freepatentsonline.com/6983701.html

Levitation required some cutoff speed to attain.

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Levitation at zero speed i.e, Static levitation.

http://ninpopephysics.comuv.com/maglev/howitworks.php

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Component of MAGLEV

• Propulsion system:- Linear motor which gives linear thrust to the train which is on track .We used LIM (Linear Induction motor) for propulsion

• Levitation system:- Inductrack Levitation system which has Halbach array placed into the train, ladder track over which the train moves for levitation.

Inductrack Levitation system

• Halbach array:- Special arrangement of Ndfeb (Neodymium-Iron-Boron) permanent magnets. This array moves over ladder track for Levitation.

• Ladder track:- It is used to give levitating force to the Halbach array moving over it. This force is due to emf induced in the track.

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http://cegt201.bradley.edu/projects/proj2004/maglevt1/inductrack.html

Basic concept of EDS

• The stopped train does not induce current, or magnetic fields.

• As the train moves at slow velocities, small magnetic fields are produced with the like magnetic poles creating drag forces. The induced magnetic field becomes greater, thus causing more drag forces.

• The phase of the induced current will begin to lag, or be delayed when the velocity or frequency reaches a certain point.

• As this happens, the like poles begin to line up under the Halbach array providing levitation.

• The maximum phase lag that can occur is 90 degree, which happens at high velocities.

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[5] Dusty Funk & Kyle Getsla., “Magnetic Levitation Train Final Report,” Bradley University Department of Electrical and Computer Engineering.

550W Linear Induction Motor(LIM)

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Results

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[5] Dusty Funk & Kyle Getsla., “Magnetic Levitation Train Final Report,” Bradley University Department of Electrical and Computer Engineering

References

1. Post, Richard F., Kratz, Robert, “Halbach Arrays for Maglev Applications,” Lawrence Livermore National Laboratory. September 1999.

2. Post, Richard F., “Inductrack Demonstration Model,” Report UCRL-ID-129664,February 3, 1998.

3. Post, Richard F., “Inductrack Magnet Configuration,” U.S. Patent No. 6,633,217 B2

4. Post, Richard F., “Magnetic Levitation for Moving Objects,” U.S. Patent No. 5,722,326.

5. Dusty Funk & Kyle Getsla., “Magnetic Levitation Train Final Report,” Bradley University Department of Electrical and Computer Engineering.

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Thank You

Vikas Kurariya