2. INTRDUCTION
MAGLEV= MAGNET+ LEVITATION
The term maglev refers not only to
the vehicles but also to the railway
system.
Maglev train use magnetic
levitation from a very large number
of magnets for lift and propulsion.
3. INTRODUCTION
Has the potential to be faster, quitter
and smoother than wheeled mass
transit system.
Japan, Germany were pioneers, USA
and Australia are working on it now.
4. HOW IT WORKS
A maglev train floats about 10 mm
above the guideway on a magnetic
field.
It is propelled by the guideway itself
rather than an on board engine by
changing the magnetic fields.
5. HOW IT WORKS
Once the train is pulled into the next
section the magnetism switches so
that the train is pulled on again.
The electro-magnets run the length of
the guideway.
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8. MAGLEV TECHNOLOGY
There are two primary types of
maglev technology:
electromagnetic suspension (EMS)
electrodynamic suspension (EDS)
9. ELECTROMAGNETIC SUSPENSION
(EMS)
In current EMS system ,the train levitation
above a steel rail while electromagnets
attached to the train are oriented toward
the rail from below.
The electromagnets use feedback control
to maintain the train at a constant
distance from the track.
10. ELECTRODYNAMIC SUSPENSION
In electrodynamic suspension both the rail
and the train exert a magnetic field and
the train is levitated by repulsive force
between these magnetic fields.
The repulsive force in the track is created
by an induced magnetic field wires or
other conducting strip in the track.
11. ELECTRODYNAMIC SUSPENSION
At slow speed the current induced in
these coils and resultant magnetic
flux in not large enough to support
weight of the train.
For the reason the train must have
wheel or some other form of landing
gear.
12. ELECTRODYNAMIC SUSPENSION
Propulsion coils on the guide way are used
to exert a force on the magnets in the train
and make the train move forward.
The propulsion coils that exert a force on
the train are effectively a linear motor.
And alternating current flowing through the
coils generates a continuously varying
magnetic field that moves forward along
the track.
13. DID YOU KNOW ?
Maglev train can attain speed of 300mph
easily (the speed of jet aircraft)
The JAPANESE MAGLEV last records was of
581km/h
The SHANGHAI Maglev train can speed up to
431km/h or 267mph.
The first commercial maglev was opened in
1984 in Birmingham , England covering some
600 meters between airport and rail hub.
14. Advantages of Maglev
• A Maglev is way faster than your usual bullet train.
Maglevs can reach speeds up to 500 kilo meters per
hour.
• Due to its lack of wheels, Maglevs are quieter than
normal trains, or sometimes even traffic.
• Maglevs use 30% less energy than normal trains.
• In theory, a Maglev and its track would require very little
maintenance since the train never touches the track
there is virtually no wear and tear.
15. Disadvantages of Maglev
• The Maglev's track is much more expensive than
railroad tracks.
• Whole new sets of tracks would have to be built
for the Maglev to run. Many Transportation
vehicles in Europe run on existing track, like the
TGV trains in France.
• Although Maglevs are pretty quiet, noise caused
by air disturbance still occurs.