maglev trains (1)

7/28/2019 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

maglev trains (1)

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