Maglev (derived from magnetic levitation) is a transport method that uses magnetic levitation to move vehicles without touching the ground. With maglev, a vehicle travels along a guideway using magnets to create both lift and propulsion, thereby reducing friction and allowing higher speeds.Maglev trains move more smoothly and more quietly than
wheeled mass transit systems. They are relatively unaffected by
weather. The power needed for levitation is typically not a large percentage of its overall energy consumption;most goes to overcome air resistance (drag), as with other highspeed transport. Maglev trains hold the speed record for rail transportation
Beyond the EU: DORA and NIS 2 Directive's Global Impact
Maglev
1. A SEMINAR ON MAGLEV
Presented by
Subhra ch. behera (1421005)
Debasish mohapatra(1421006)
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2. AGENDA
INTRODUCTION
WHAT IS MAGLEV TRAIN
WHY MAGLEV TRAIN??
HISTORY
TYPES OF MAGNETIC LEVITATION
Types of technology involved
Working principle
Future scopes
conclusion
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3. INTRODUCTion
Maglev = magnetic +levitation.
• It is a method by which an
object is suspended with no
support other than magnetic
fields.
• Magnetic force is used to
counteract the effects of the
gravitational and any other
accelerations.
(A cubical magnet levitating over a
superconducting material)
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4. WHAT IS MAGLEV TRAIN ??
Magnetic Levitation Train (Maglev Train) is an
advanced train technology in which magnetic forces
lift, propel, and guide a vehicle over a guide way.
It employs powerful superconducting magnets to
levitate or "float“ cars about 2 inches above a guideway.
Liquid helium cools the magnets to near absolute zero
enabling relatively small magnets to create very
powerful fields.
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5. Why maglev train???
MagLev Trains Conventional Trains
No Friction = Less
Maintenance
Routine Maintenance
Needed
No Engine = No fuel
required
Engine requires fossil
fuels
Speeds in excess of
300 mph
Speeds up to 110 mph
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6. HISTORY
1900 - Robert Goddard and Emile Bachelet conceived the
concept of frictionless trains.
1969 - American scientists James R. Powell and Gordan T.
Danby patented the first design for magnetic levitational
trains.
1970 - Germans and Japanese start research and
development towards their versions of maglev technology
1991 - Germany's government certifies operation of first
maglev train for the public.
Finally accomplishing practical public service in 2003 in
Shanghai, China
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7. Basic of Magnetic Levitation
Faraday’s Law :-
1st Law :- It states that whenever a conductor cuts
magnetic flux , an emf is induced in that conductor.
2nd Law :- It states that the magnitude of the induced
emf is equal to the rate of change of flux-linkage.
i.e. , e=-Nⅆφ volts
dt
Lenz’s Law :-
It states that , the direction of the induced current is
such that the induced magnetic field opposes the
change in the flux.
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9. Types of Magnetic Levitation
Permanent Magnet
Electro Magnet
Superconducting Magnet
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10. Permanent Magnet
The first type of levitation is the
implementation through permanent
magnets. These magnets are made of
a material that creates a north and a
south pole on them.
The main disadvantages of a
permanent magnet are the cost of
the magnet itself when put into
large scale systems.Another
disadvantage is the varying changes
in the magnetic field.
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11. Electro Magnet
By running electric
current through a wire, we
can create a magnetic
field.
When this wire is coiled
around a magnetic
material (i.e. metal), a
current is passed through
this wire, then the electric
current will magnetize
the metallic core.
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12. Superconducting Magnet
The superconducting magnets is a material which
presents no electrical resistivity to electrical current.
Once a current has been fed into the coils of this
material, it will indefinitely flow without requiring the
input of any additional current
I2R loss = 0
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16. Induced track system
Operates on the basis of
principle of lenzs law
Can attain levitation at
comparatively low speed
of about 22 mph
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17. Working Principle of Maglev Train
Principle of Levitation
Principle of Lateral Guidance
Principle of Propulsion
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18. Levitation
It pushes the train
upward so that it can
levitate 10 cm above the
track.
The train does not
levitate until it reaches
80 km/h , so it is
equipped with wheels.
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20. Propulsion
When a current is supplied
to the windings, it creates a
traveling alternating
current that propels the
train forward by pushing
and pulling.
When the alternating
current is reversed, the
train brakes
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22. Advantages Limitation
uses 30% less energy than
high speed train
Longer lifetime with low
maintenance costs
Energy efficiency
No pollution
Environmental benefits
Safety advantages
Requires complex circuitry.
Requires highly skilled and
trained operators.
Requires more research.
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23. FUTURE SCOPES
MACH-3
Maglev space propulsion
Electric generators- made with superconducting
wire: They have a 99% efficiency and have about
half the size of conventional generators
MagLev Trains in INDIA
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24. conclusion
Maglev trains use magnets to levitate and propel the
trains forward.
Since there is no friction these trains can reach high
speeds.
It is a safe and efficient way to travel.
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25. References
E. Riches, “Will Maglev lift off?,” IEEE Review, pp. 427–430,
Dec. 1988
• www.wikipedia.org/wiki/Magnetic_levitation
• Maglev Trains (Thompson, Marc T. Eddy current magnetic
levitation, models and experiments).
• S. Yamamura, “Magnetic levitation technology of tracked
vehicles present status and prospects,” IEEE Trans. Magn.,
vol. MAG-12, no.6, pp. 874–878, Nov. 1976
P. Sinha, “Design of a magnetically levitated vehicle,” IEEE
Trans. Magn., vol. MAG-20, no. 5, pp. 1672–1674, Sep. 1984
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