about maglev

1. MAGLEV
TRANSPORTATION
A REVOLUTION IN THE
TRANSPORTATION MODE……..

2. W H A T IS
M A G L A V?

3. BASIC PRINCIPLE
MOVING CHARGE
AND
MAGNETIC FIELD

4. M A G N E T IC F O R C E
DEPENDS ON…
• LENGTH OF WIRE
• CURRENT
• STRENGTH OF MAGNETIC FIELD

5. CURRENT AND MAGNETIC FORCE
Direction of the force is
perpendicular to current
direction and magnetic field. The
repulsion or attraction between
two parallel wires is of particular
importance to magnetic
levitation. If the currents flow in
the same direction (as shown), the
wires attract. If the current flow
in opposite directions, the wire
repels.

6. MAGLEV
T R A N S P O R T A T IO N
LEVITATION AND PROPULSION
1) Levitation by attraction
2) Propulsion by repulsion

7. L E V IT A T IO N B Y
A T T R A C T IO N
In order for the train float,there
Must be two coils.The top coil is
installed in the train and the
bottom
coil is placed in the track
.Attraction
is caused by having the currents
within each of the circuits ,
traveling
in the same direction

8. P R O P U L S IO N B Y
R E P U L S IO N
Sim ilar poles of a m agnet repel
each other . In ord er for the train
to float , there m ust be two coils.
The top coil is placed within the
train and the bottom coil is placed
on the track . The current in the
top circuit travels in the opposite
d irection of the current in the
bottom , resulting in the repulsion
between two coils.

9. FLOATING ON
COURSE
Drift between the The enhanced
rail and levitation T ga w bet een
he p idens w current input into
magnets caused t t a a t t a
he r in nd he r ck the levitation
by wind or when beca ofashora of
use t ge magnets
the train rounds ma ic for
gnet ce. increases the
a curve magnetic force.

10. PROPAGATION VELOCITY
The forward speed for LSM or LIM
is determined by propagation velocity of
electromagnetic field. In co-axial cable the
velocity of electromagnetic wave is hardly
65%. This is due to inductance down the
length of wire and capacitive coupling of
surface of wire with free space . Thus
electromagnetic wave takes more time to
travel in co-axial cable than in free space.

11. The magnetic field of bogie magnets are
static , thus the propagation velocity along
the bogie is zero.
The equations for the bogie velocity are as
follows:-
Vb = V2 - V1
V1 = propagation velocity of guide rail drive coil
V2 = propagation velocity of bogie magnetic field
Vb = bogie velocity

12. C O N D IT IO N S …
• If V2 = 0 then Vb = V1
• If V1 = V2 then Vb = 0
• If V2 = - V1 then Vb = 2V1

13. S P E E D C O N TR O L
The speed of MAGLEV depends on the
propagation velocity of electromagnetic coil
excitation .
• For LSM :Bogie moves at the propagation
speed
• For LIM : Bogie will have a certain slip
Speed control can be done by :
– Adjusting capacitance
– Having switch system
– Succession of excitation coil

14. APPLICATIONS OF MAGLAV
PROPAGATION
• Launch Vehicle
• MERRI
• Inter-city trucks
• Mach-3

15. L A U N C H V E H IC L E
This research in m agnetic levitation
could give launch vehicle a running start
to break free from earth's gravity the
m aglev can accelerate the vehicle to a
speed of about 600 m ph then it can be
switched over to rocket engines separate
from m aglev carrier an propel itself into
space this would result in d ram atically
red uction in cost of getting to space as
carrier and electric power used for
m aglev are inexp- ensive and stay on
ground while rocket fuels which ad d to
weight of launch vehicle L .S.M . is used it
can carry a pay load three tim es m ore and
elim inates the first stage of launching .

16. MERRI
Maglev emplacement on rail road infrastructure :it allows maglev
vehicles to use trackage without interfering with ,or requiring
reconstruction of existing package
Thin panels containing the MERRI guide way loops are attached to
the ends of the existing wooden railroad ties. The MERRI panels
interact with the magnets on the maglev vehicles, levitating it as it
moves along the track. The panels are located so that they do not
interfere with the rails or the operation of conventional railroad
locomotives and rail cards. Accordingly, the MERRI system could
even be put into place on trackage that was still in operation, but
only infrequently.

17. INTER CITY TRUCK
Using the M-2000 National Maglev
Network, a trucking company would pick
up a loaded trailer at its origin and drive it
a few miles to the nearest maglev station.
There it would be loaded into a maglev
vehicle, to travel hundreds or thousands of
miles to the maglev station closest to its
destination, where a tractor would pickup
the trailer and drive it a few miles to its
delivery point.

18. MACH-3
If the Maglev vehicles operate in a low-
pressure tunnel, however, air drag is
effectively zero and no longer a factor, so that
vehicles can travel at speeds of thousands of
miles per hour. There still is a small magnetic
drag due to power losses in the normal metal
loops on the guide way, but this does not
impose any practical limit. The magnetic drag
power, in fact, is constant with speed while the
magnetic drag force decreases as (1/velocity).

19. A D VA N TA G E S
E R YCONSUM ION:
NE G PT
M AG LE V u s e s 30% le s s e ne rgy th an h igh s p e e d train
SPEED ICE Train MAGLEV Train
200km/hr 32Wh/km 32Wh/km
250km/hr 44Wh/km 37Wh/km
300km/hr 71Wh/km 47Wh/km
400km/hr - 71Wh/km

20. OPERATION COST
• Virtually no wear and tear.
• Specific energy consumption is less.
• Faster train turn around time means
fewer vehicles

21. N O IS E L E V E L S :
• No noise by wheel rolling or engine.
V IB R A T IO N S :
• Just below human threshold of perception
P O W E R S U P P L Y:
• 110KV lines fed separately via two substations
P O W E R F A IL U R E :
• Batteries on board automatically activated

22. F IR E R E S IS T A N C E S :
• Latest non-PVC material used that
is non-combustible
• Carries no fuel.
S A F E T Y:
• Collisions are impossible because
only section of tracks are activated
as needed.

23. By
Sriram Suravarapu
Adarsh Nadella

24. THANK YOU…