This document discusses magnetic levitation (maglev) trains. It begins by explaining the basic principles of magnetic levitation using Faraday's Law and Lenz's Law. It then provides a brief history of maglev train development in Japan, Germany, and China. Key points include Japan building the first test track in 1975 and achieving 517 km/h, and China opening the first commercial maglev route between Shanghai airports in 2003. Advantages of maglev trains are listed as high speed, energy efficiency, lack of pollution, and less maintenance; while disadvantages include very high construction costs. The document concludes by discussing Japan's plans for a maglev train reaching 500 km/h by 2027.
Magnetic levitation, Present and Future Usage.
Product Marketing, Bearing with infinite rpm, weightlessness, flying cars, low cost space launch and even the flying city.
Magnetic Levitation is a method by which we can levitated an object with no support, other than magnetic field.
since it is a old theory but there still research is going on in this topic.now it is used in maglev train,maglev bearing and product display purpose.
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
Magnetic levitation, Present and Future Usage.
Product Marketing, Bearing with infinite rpm, weightlessness, flying cars, low cost space launch and even the flying city.
Magnetic Levitation is a method by which we can levitated an object with no support, other than magnetic field.
since it is a old theory but there still research is going on in this topic.now it is used in maglev train,maglev bearing and product display purpose.
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
ALL CONCEPTS OF MAGNETIC LEVITATIONS.
TYPES OF MAGNETIC LEVITATIONS.
APPLICATIONS OF MAGNETIC LEVITATION WITH EXAMPLES,PICTURES.
WELL DEFINED CONCEPT.
MAGLEV TRAINS
WORKING OF MAGLEV TRAINS.
COMPARISION BETWEEN MAGLEV TRAIN AND CONVENTIONAL TRAINS.
FUTURE SCOPE.
CONCLUSIONS
ADVANTAGES AMD DISADVANTAGES.
REFRENCES
BEST TRANTITIONS ADDED.
Maglev trains are the fastest trains in the world! Maglev is short for magnetic levitation which basic principles involve the use of magnetism to levitate an object.
Seminar on Magnetic levitation and its applicatonRahul Shaw
Magnetic levitation is the use of magnetic fields to levitate a (usually) metallic object. Manipulating magnetic fields and controlling their forces can levitate an object.
In this process an object is suspended above another with no other support but magnetic fields.
The electromagnetic force is used to counteract the effects of gravitation. But it has also been proved that it is not possible to levitate using static, macroscopic, `classical' electromagnetic fields.
The forces acting on an object in any combination of gravitational, electrostatic, and magnetostatic fields will make the object's position unstable.
The reason a permanent magnet suspended above another magnet is unstable is because the levitated magnet will easily overturn and the force will become attractive. If the levitated magnet is rotated, the gyroscopic forces can prevent the magnet from overturning.
Several possibilities exist to make levitation viable.
It is possible to levitate superconductors and other diamagnetic materials, which magnetise in the opposite sense to a magnetic field in which they are placed.
A superconductor is perfectly diamagnetic which means it expels a magnetic field (Meissner-Ochsenfeld effect). Other diamagnetic materials are commonplace and can also be levitated in a magnetic field if it is strong enough.Diamagnetism is a very weak form of magnetism that is only exhibited in the presence of an external magnetic field.
The induced magnetic moment is very small and in a direction opposite to that of the applied field. When placed between the poles of a strong electromagnet, diamagnetic materials are attracted towards regions where the magnetic field is weak.
Diamagnetism can be used to levitate light pieces of pyrolytic graphite or bismuth above a moderately strong permanent magnet. As water is predominantly diamagnetic, this property has been used to levitate water droplets and even live animals, such as a grasshopper and a frog.
Superconductors are perfect diamagnets and when placed in an external magnetic field expel the field lines from their interiors (better than a diamagnet). The magnet is held at a fixed distance from the superconductor or vice versa. This is the principle in place behind EDS (electrodynamic suspension) maglev trains. The EDS system relies on superconducting magnets.
A maglev is a train, which is suspended in air above the track, and propelled forward using magnetism. Because of the lack of physical contact between the track and vehicle, the only friction is that between the carriages and air. So maglev trains can travel at very high speeds (650 km/h) with reasonable energy consumption and noise levels
ALL CONCEPTS OF MAGNETIC LEVITATIONS.
TYPES OF MAGNETIC LEVITATIONS.
APPLICATIONS OF MAGNETIC LEVITATION WITH EXAMPLES,PICTURES.
WELL DEFINED CONCEPT.
MAGLEV TRAINS
WORKING OF MAGLEV TRAINS.
COMPARISION BETWEEN MAGLEV TRAIN AND CONVENTIONAL TRAINS.
FUTURE SCOPE.
CONCLUSIONS
ADVANTAGES AMD DISADVANTAGES.
REFRENCES
BEST TRANTITIONS ADDED.
Maglev trains are the fastest trains in the world! Maglev is short for magnetic levitation which basic principles involve the use of magnetism to levitate an object.
Seminar on Magnetic levitation and its applicatonRahul Shaw
Magnetic levitation is the use of magnetic fields to levitate a (usually) metallic object. Manipulating magnetic fields and controlling their forces can levitate an object.
In this process an object is suspended above another with no other support but magnetic fields.
The electromagnetic force is used to counteract the effects of gravitation. But it has also been proved that it is not possible to levitate using static, macroscopic, `classical' electromagnetic fields.
The forces acting on an object in any combination of gravitational, electrostatic, and magnetostatic fields will make the object's position unstable.
The reason a permanent magnet suspended above another magnet is unstable is because the levitated magnet will easily overturn and the force will become attractive. If the levitated magnet is rotated, the gyroscopic forces can prevent the magnet from overturning.
Several possibilities exist to make levitation viable.
It is possible to levitate superconductors and other diamagnetic materials, which magnetise in the opposite sense to a magnetic field in which they are placed.
A superconductor is perfectly diamagnetic which means it expels a magnetic field (Meissner-Ochsenfeld effect). Other diamagnetic materials are commonplace and can also be levitated in a magnetic field if it is strong enough.Diamagnetism is a very weak form of magnetism that is only exhibited in the presence of an external magnetic field.
The induced magnetic moment is very small and in a direction opposite to that of the applied field. When placed between the poles of a strong electromagnet, diamagnetic materials are attracted towards regions where the magnetic field is weak.
Diamagnetism can be used to levitate light pieces of pyrolytic graphite or bismuth above a moderately strong permanent magnet. As water is predominantly diamagnetic, this property has been used to levitate water droplets and even live animals, such as a grasshopper and a frog.
Superconductors are perfect diamagnets and when placed in an external magnetic field expel the field lines from their interiors (better than a diamagnet). The magnet is held at a fixed distance from the superconductor or vice versa. This is the principle in place behind EDS (electrodynamic suspension) maglev trains. The EDS system relies on superconducting magnets.
A maglev is a train, which is suspended in air above the track, and propelled forward using magnetism. Because of the lack of physical contact between the track and vehicle, the only friction is that between the carriages and air. So maglev trains can travel at very high speeds (650 km/h) with reasonable energy consumption and noise levels
Magnetic Levitation Train by Shaheen Galgali_seminar report finalshaheen galgali
Magnetic levitation is a highly advanced technology which uses the principle of Electromagnetic suspension & Electrodynamics suspension technology. It has various uses, The common point in all applications is the lack of contact and no friction. This increases efficiency, reduces maintenance costs, and increases the useful life of the system. Magnetic levitation is a technique to suspend an object without any support other than that of a magnetic field. There are already many countries that are attracted to maglev system. Many system have been proposed in different parts of the worlds. Maglev can be conveniently considered as a solution for the future needs of the world. This contribution deals with magnetic levitation. An overview of types, principles and working of magnetic levitation is given with the example by train are presented.
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sumber yang salah, menghasilkan hasil yang salah.
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Maglev trains are the fastest trains in the world! Maglev is short for magnetic levitation which basic principles involve the use of magnetism to levitate an object.
Introduction to Maglev.
History
Types of Maglev suspension.
EMS
EDS
Concept of superconductivity.
Basic principle of Maglev.
Concept of super conducting magnet.
Gap sensor, Speed ,Noise pollution.
Advantages and Disadvantages.
Application
Future Projects in India.
Conclusion
Brief Description regarding magnetic levitation or magnetic suspension.It is a method by which an object is suspended with no support other than magnetic fields.
Maglev Trains- Train That Fly on the AirOnkar Pawar
Maglev is short for Magnetic Levitation in which trains float on a guide way using the principle of magnetic repulsion. Each magnet has two poles. Now if you play with two magnets, you'll realize that opposite poles attract, whereas similar poles repel. This repulsive property of magnets is used in Maglev trains. However, instead of using permanent magnets, the principle of electromagnetism is used to create strong and large temporary magnets. When an electric current is passed through a coil of wire, magnetic field is generated around the coil according to Faraday's laws.
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The Roman Empire A Historical Colossus.pdfkaushalkr1407
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1. K r i s h n a d i t y a R a n a
( I T - 4 9 )
Y a t i n D e s a i ( E C - 0 2 )
K i s h a n P a t e l ( E C -
0 3 )
Electromagnets and
superconducting magnets
have allowed us to create a
magnetic levitating train
nicknamed “Maglev” that
floats on the track.
Magnetic
Levitation
2. 2
What is MAGNETIC
LEVITATION?
Magnetic levitation, maglev,
or magnetic suspension 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.
The two primary issues involved in
magnetic levitation are lifting force:
providing an upward force sufficient to
counteract gravity, and stability:
4. 4
slide or flip into a configuration where
the lift is neutralized.
Magnetic levitation is used for maglev
trains, contactless melting, magnetic
bearings and for product display
purposes.
Maglev’s Levitation is basically baed on
two simple and fundamental laws of
electromagnetic.
FARADAY’S LAW
LENZ’S LAW
5. 5
FARADY’s LAW:
It states that:
"The emf (electromagnetic force)
induced in a circuit is directly
proportional to the time rate of change
of magnetic flux through the circuit." is
the electromagnetic force (EMF) in volts
FB is the magnetic flux through the
circuit (in Webers).
Faraday’s law simply says that, if a
closed loop of wire is placed close to a
6. 6
permanent magnet, then electric
current can be induced into the wire by
moving either the magnet with respect
to the coil or vice versa.
Hence it is the relative movement
between the coil and the magnet that
matters (change in flux cutting the
loop).
When the magnet is moved toward the
loop, the current induced flows in one
direction, but when it is moved away, it
flows in opposite direction, it indicates
that the direction of the current
depends on the time rate of change of
the field, i.e. if the field is getting
stronger or weaker as time progresses.
7. 7
The direction of induced current is
further explained by Lenz’s law.
LENZ’S LAW
LENZ’S law describes about the direction
of current being induced by magnetic
field as described in faraday’s law.
It states that:
“Induced electromotive force generates
a current, which flows in such direction
as to induce a counter magnetic field
that opposes the magnetic field
generating the current”
8. 8
The induced EMF creates a current that
itself creates a secondary magnetic field.
This secondary magnetic field also
changes with time and thus creates a
changing secondary magnetic flux. The
secondary flux changes in such a way to
oppose the change in flux creating the
EMF.
To further understand, consider a coil
and permanent magnet as shown in
figure. No change in flux means no
current induced. Now consider when the
north pole of a permanent magnet is
pushed into a loop the flux increases. An
upwards secondary magnetic field is
created that opposes the downward B-
9. 9
field of the magnet, and thus the current
in loop must flow counterclockwise in
order to create this secondary B-field.
When the magnet is removed from the
loop , the decreasing B-field in the loop
creates a decreasing flux. To oppose this
decrease, the current in the loop flows in
such a way that tries to sustain the
magnetic field. The current now has to
flow clockwise in order to create a
positive secondary flux that tries to
counter acts the decreasing flux due to
the with drawl of the permanent
magnet.
10. 10
Maglev Train
Maglev trains are trains that levitate
about 10 mm off the tracks using
repulsive electromagnets on both the
tracks and the train itself. This levitation
greatly reduces friction, potentially
allowing the train to move faster and
consume less power than it would
otherwise. There are no regularly used
maglev trains, though test tracks have
been built in Germany, the USA, and
Japan; including the MLX01, located in
11. 11
Japan, which is the fastest train ever
built at 550km/h (344 mph).
History Of Maglev
Trains
The history of maglev train started
already in the beginning of the 1900's
century, when the American Robert
Goddard and the French Emile Bachelet
conceived the idea of frictionless trains.
The scientists did not succeed with their
idea, so the concept of frictionless
trains lay dormant for about 60 years
until the Japanese and the German
started to do research on the subject.
12. 12
The Japanese started their research on
maglev transportations in the
beginning of the 1970s. After many
years of experiments the Japanese
constructed their first test line, 7 km in
1975, and finished it in 1977. Many test
runs started in July 1977 with a velocity
of 517km/h. In 1990 Japan constructed
the Yamanashi Maglev test line. This
test line became 42.8km long and the
first running test was in 1997. The
Japanese prototype of maglev train is
using repulsive forces to levitate the
train, known as electrodynamic
suspension, EDS.
The German also started research on
maglev train in early 1970s. It took
13. 13
them ten years to complete the
construction of the first track model. In
1993 the longest nonstop test running
was 1.674 km. That same year the
speed record was 450 km/h. In China,
2003, they finished a 30 km long
German variant of maglev train in
Shanghai, that propels by attractive
forces, electromagnetic suspension,
EMS . This is the first commercial
magnetic levitation train in the world.
This project cost over 1 billion dollar.
14. 14
Advantages :
Maglev train cars are less expensive
to build and are relatively quiet in
comparison to conventional trains.
The maglev tracks take up a lot less
land, because they are elevated. This
also reduces the amount of
collisions and accidents.
No traffic!.
Maglev trains use far less energy
than other types of transportation.
15. 15
Maglev trains do not pollute (since
instead of using fossil fuels,
magnetic fields are used to levitate
and propel the trains
forward).Maglev trains are much
faster, because they float over the
track eliminating rolling resistance
and potentially improving the power
efficiency.
Maglev trains require Less
maintenance (no wear because they
float over the track).
A lot of potential. The possibility of
linking 2 cities, over a distance of
1500km.
16. 16
Disadvantages :
Cost is major issue when considering
maglev trains, especially since they
cannot operate on the existing,
conventional rails.
Guideways would need to be built in
order to make use of this new
technology, costing approximately
$8.5 billions.
17. 17
The weight of the electromagnets in
the EMS and EDS systems are also
an issue.
A very strong magnetic field is
required to levitate the heavy trains,
(the transrapid TRO7 weighs 45
tons) and maintaining the field
constant requires a lot of energy
which is expensive.
18. 18
Current scenario with
maglev trains.
Japan’s new maglev train will be the
world’s fastest subway: Japan is
unveiling a train that travels even faster
than a speeding bullet train. This week,
the Central Japan Railway Company is
havingpassengers test out a maglev
train that reaches speeds of up to 500
kmh (about 311 mph). The train will run
between Tokyo and the central city of
Nagoya by 2027, cutting traveling time
from 90 minutes to 40 minutes.
MAGLEV TRAIN , a new age for japan’s
ECONOMY.
19. 19
A traditional leader in the export of
high speed rail technology, Japan faces
stiff competition from its regional
archrival China, which has been
aggressively building high speed within
the country as well as trying to sell it
elsewhere. The world’s fastest
passenger train is currently Shanghai’s
maglev, which travels to and from
Pudong International Airport at about
431 kmh.
Moreover, Japan’s maglev speeds may
soon be overtaken by Chinese
engineers. Researchers from a Chinese
university have built a prototype for a
“super maglev” that operates within a
vacuum tube and travels as fast as
3,000 kmh, though that is technology
20. 20
that will likely be used for military or
space launch systems, researchers said.
21. 21
Conclusion:
In conclusion, in this project we have
learnt about
• How magnetic levitations are
achieved (Faraday's Law, Lenz's Law)
• The maglev suspension systems
(EMS, EDS, Inductrack)
• The maglev propulsion systems
Now that we have known how the
technology works, we believe that
maglev systems can be researched
further to be used in advanced
applications and maglev technologies
22. 22
are high in demand due to it being
environmentally friendly.
Even though maglevs have drawbacks in
terms of the cost to build it, the major
advantages overshadow the drawbacks
in a long term.