maglev trains (1)
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SEMINAR
ON
MAGLEV TRAINS
PRESENTED BY:
TANMAY SINGH
ECE FINAL YR.
GUIDED BY:
Ms.SHIKHA BHARDWAJ
LECTRUR (ECE. DEPTT.)www.powerpointpresentationon.blogspot.com
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MAGLEV TRAINS
TRAINS THAT FLY ON AIR.
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CONTENTS
INTRODUCTION
WORKING
POWER SUPPLY
PROPULSION SYSTEM
APPLICATION INFORMATION
MAGLEV PROJECTS
ADVANTAGES
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INTRODUCTION:
Maglev = magnetic + levitation.
1st described by Robert Goddard,American Rocket Scientist, 1909 Scientific
American.
Next, 1912, French engineer, modeled it,Emile Bachelet, eddy-current repulsivelevititation, amount of power needed too
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Uses magnets to float the train along the
track-oNo friction
oCheat gravity
oVery quiet
Travels very fast (up to 250 mph).
Requires all new train track to be built.
Cant run on old train track needs ma net
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CONTD..
- Expensive to build, but cheap to run.
Cost for labor and energy:Air travel = approx. $ 14 per mile.
Maglev travel = approx. $ 04 to $ 10 per mile.
Cost to build Maglev train tracks = $5 millionper two-way mile.
Cost to build new airport , anywhere from $500
million to 1 billion.
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WORKING
.The electromagnets on the underside of thetrain pull it up to the ferromagnetic stators onthe track and levitate the train.
The magnets on the side keep the train frommoving from side to side.
A computer changes the amount of current to
keep the train 1 cm from the track.
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POWER SUPPLY
Batteries on the train power the system,
and therefore it still functions withoutpropulsion.
The batteries can levitate the train for 30
minutes without any additional energy.Linear generators in the magnets on
board the train use the motion of the train
to recharge the batteries.
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PROPULSION SYSTEMThe system consists of
aluminum three-phasecable windings in the
stator packs that are on
the guideway.When a current is
supplied to the
windings, it creates a
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When the alternating
current is reversed,the train brakes.
Different speeds are
achieved by varyingthe intensity of the
current.
Only the section of
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APPLICATION INFO
SAFETY-
The trains are virtually impossible to
derail because the train is wrapped
around the track.
Collisions between trains are unlikely
because computers are controlling the
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CONTD..
The train is earthquake proof because the
greater space (10 cm) between the trackand the train leaves more room for track
deformation.
Linear generators will produce all theelectricity needed in the trains interior.
Only the part of the track that is used will
be electrified so no energy is wasted.
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MAINTENANCE-
There is very little maintenance because
there is no contact between the parts.
COMFORT-
The ride is smooth while not accelerating.
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.The initial investment is similar to other high
speed rail roads (Maglift is $20-$40 million per
mile and I-279 in Pittsburg cost $37 million per
mile).
Operating expenses are half of that of other
railroads.
A train is composed of sections that each
ECONOMIC EFFICIENCY-
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SPEED-
The train can travel at about 300 mph. (acc.
can go only up to 200 mph).
For trips of distances up to 500 miles its total
travel time is equal to a plane.
It can accelerate to 200 mph in 3 miles, so it is
ideal for short jumps.
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NOISE POLLUTION-
The train makes
little noise because
it does not touch thetrack and it has no
motor. Therefore, all
noise comes frommoving air. This
sound is equivalent
to the noise
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MAGNETIC FIELD-
The magnetic fieldcreated is low,
therefore there are
no adverse effects.
GERMANYS
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GERMANYS
MAGLEV:
THE TRANSRAPID
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GERMANYS MAGLEV
Monorail (only one rail under train).
Like all Maglevs , it is very quiet (no track
friction).
Can climb steeper heights than normal
trains, making it perfect for the
mountains.
Click here to take a ride
http://video.google.com/videoplay?docid=-2924579093176833442http://video.google.com/videoplay?docid=-2924579093176833442http://video.google.com/videoplay?docid=-2924579093176833442 -
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SHANGHAIS
MAGLEV
on the Shanghai Maglev!
Click here to take a ride
http://video.google.com/videoplay?docid=-2924579093176833442http://video.google.com/videoplay?docid=-2924579093176833442http://video.google.com/videoplay?docid=-2924579093176833442http://video.google.com/videoplay?docid=-2924579093176833442http://video.google.com/videoplay?docid=-2924579093176833442http://video.google.com/videoplay?docid=-2924579093176833442 -
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SHANGHAIS MAGLEV
Completed in January 2003.
Connects Shanghais subway system tothe International airport.
Train gets up to 200 mph (321.87 km/h) in
2 minutes.
Cost to city: 1.2 billion dollars (10 billion
yuan) and 2.5 years to complete the 19
miles (30.58 km) track.
Cost to ride.: $6 one-way, $8 for two-way
on the Shanghai Maglev!
http://video.google.com/videoplay?docid=-2924579093176833442http://video.google.com/videoplay?docid=-2924579093176833442http://video.google.com/videoplay?docid=-2924579093176833442 -
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JAPANS MAGLEV
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JAPANS MAGLEV
Experimental
Holds Maglev speed record: 361 M.P.H(with passengers).
Needs wheels at lower speeds till
magnetic levitation fields produce enoughlift to float.
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ADVANTAGES
Well it sounds high-tech, a floating
train, they do offer certain benefits
over conventional steel rail on steel
wheel railways.
The primary advantage is
maintenance.
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Because the train floats along there isno contact with the ground and
therefore no need for any moving parts.As a result there are no components
that would wear out.
Note that there is still air resistance.
CONTD..
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Contd
Because there are no wheels runningalong there is no wheel noise.
However noise due to air disturbance stilloccurs while the train is in motion.
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Contd
The final advantage is speed (i.e. 500km/h or
300mph).
As a result of the three previous listed it is
more viable for maglev trains to travelextremely fast.
Although this is possible with conventional rai
it is not economically viable.
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CONCLUSIONMaglev 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.
Governments have mixed feelings about
the technology. Some countries, like
China, have embraced it and others like
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THANK YOU
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