The document discusses different methods of magnetic levitation or maglev. It describes 4 main methods - diamagnetism, superconductors, rotational stabilization, and servomechanism. It also provides details about maglev trains, including the two main types - EMS (electromagnetic suspension) and EDS (electrodynamic suspension). EMS uses electromagnets to levitate and guide the train, while EDS uses repulsion between the train and track using superconductors. Maglev trains offer advantages of high speed without risk of derailing and less energy consumption.
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.
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.
Magnetic levitation, Present and Future Usage.
Product Marketing, Bearing with infinite rpm, weightlessness, flying cars, low cost space launch and even the flying city.
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
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
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- 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.
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
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
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- 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.
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.
Magnetic Levitation through AC Excitationidescitation
A combination of AC excitation and series tuned
circuit can be used to levitate a ferromagnetic object by
magnetic levitation technique. The electromagnet forms the
inductive part of a resonating circuit. The circuit is tuned at a
frequency less than that of the exciting frequency. Therefore
when the distance between the object and the electromagnet
increases, there is fall in inductance of the lifting magnet,
the circuit approaches resonance and the coil current
increases. The magnetic force on the object increases and the
object moves to its desired position. Though the method is
simple, for slow change in coil current the levitated object
may move under influence of gravitational force and come to
rest position. Hence a new circuit with Z-source inverter with
shoot through is designed to bring the levitated object to its
desired position.
A ppt on bullet train with breif discrption of magnetc levitation and superconductivity also the concept how the superconductivity is achieved is disscused and also the different type of bullet train is also explained.
*Please go through the data related to the presentation on given links:
This presentation mainly focuses on the technology and application of Maglev vehicles as a mean of transportation. Due to its low power consumption it also provides space for future research in efficient transportation.
References
www.faculty.rsu.edu/users/c/clayton/www/presson/paper.htm
www.academia.edu/589542/History_and_Development_of_Magnetic_Levitating_Trains
inventors.about.com/library/inventors/blrailroad3.htm
https://en.wikipedia.org/wiki/Maglev
www.21stcenturysciencetech.com/articles/Summer03/maglev2.html
science.howstuffworks.com/transport/engines-equipment/maglev-train.htm
www.magnetbahnforum.de/index.php?Emile-Bachelet
2. LEVITATION MEANS TO RISE
OR HOVER IN THE AIR
Levitation as shown in magic shows and
movies [not possible without tricks]
TRICKS AND ILLUSIONS USED SPECIAL EFFECTS USED
3. Magnetic levitation, maglev, or magnetic suspension is
a method by which an object is suspended with no
support other than magnetic fields. Magnetic pressure
is used to counteract the effects of the gravity
4. • A live frog levitated inside a
water bubble of 3 cm
diameter in a field of about
16 teslas at the HIGH FIELD
MAGNET LABORATORY, NETHERLANDS
METHODS FOR
MAGNETIC
LEVITATION
• METHOD#1
USING
DIAMAGNETISM
• Diamagnetic
materials repel
magnetic fields
• This is because their
relative permeability
is less than one
5. .
• Repulsion is weak
so high magnetic
fields are required.
• Light pieces of
graphite ,bismuth
,water droplets can
be levitated over
strong permanent
magnets.
• METHOD#1
USING
DIAMAGNETISM
• LEVITATING A LIGHT PIECE OF
GRAPHITE
6. • A SUPERCONDUCTOR LEVITATING A
PERMANENT MAGNET
METHODS FOR MAGNETIC LEVITATION
METHOD #2
SUPER
CONDUCTORS
• Superconductors are
perfect diamagnets
(μr = 0).
• They completely
expel magnetic fields
due to meissner
effect repelling the
magnetic field.
7. • At temperature less
than the critical
temperature metals
like bismuth ,steel
show
superconducting
properties
• Critical temperature
are below 150K
MEISSNER EFFECT
METHOD #2
SUPER CONDUCTORS
8. • METHOD#3
ROTATIONAL
STABILIZATION
• A rotating magnet
can be levitated
against gravity using
a base ring of
magnets.
• Given a spin so that
unlike poles do not
attract.
LEVITRON IS AN EXAMPLE OF SPIN
STABILIZED MAGNETIC LEVITATION
9. METHOD#3
ROTATIONAL
STABILIZATION
• The like poles repel
and unlike poles
attract.
• The north-north
repulsion dominates.
• So it hangs where
this upward repulsion
and force of gravity
balance each other.
10. • Uses a IR emitter and
detector and also
electronic circuits for
checking the object’s
position.
• This controls the
electromagnet depending
on the object’s position.
• METHOD#4
SERVOMECHANISM
Blocked Beam
Unblocked Beam
11. METHOD#4
SERVOMECHANISM
• If the object is too low , the
coil current is increased.
• If the object is too high the
coil current is reduced
• It is used in tabletop
demonstrations and also in
maglev trains
LEVITATION OF WASHER
13. MAGLEV TRAINS
• Maglev trains are very
high speed trains .
• They use large number
of magnets to lift,
guide and propel the
train.
,
14. MAGLEV
TRAINS
• Two types of maglev
trains have been
developed.
1. EMS MAGLEV
TRAIN developed in
GERMANY
[TRANSRAPID]
2. EDS MAGLEV
TRAIN developed in
JAPAN.[JR MAGLEV
shown in picture ]
The highest recorded speed of the
JR MAGLEV train is 581 kilometres per
hour (361 mph),
16. ELECTRO MAGNETIC
SUSPENSION[EMS]
GUIDING MAGNETS
• Magnetic forces may
not be constant on
the two sides.
• So ,electromagnets
are controlled by
computers to keep
the train in the
center.
front view of guiding magnets
side view
17. • Picture showing aluminium
windings
ELECTRO MAGNETIC
SUSPENSION[EMS]
PROPULSION
• Aluminium three
phase windings are
present in the track.
• When a current is
supplied to the
windings, it creates a
traveling alternating
current that propels
the train forward by
pushing and pulling.
18. ELECTRO MAGNETIC
SUSPENSION[EMS]
BRAKING
• When the alternating
current is reversed, the
train brakes.
• Different speeds are
achieved by varying the
intensity of the current.
• Only the section of track
where the train is
traveling is electrified.
19. ELECTRO DYNAMIC
SUSPENSION [EDS]
LEVITATION
• In electrodynamic
suspension (EDS), a
repulsive magnetic
field between the train
and the track levitates
the train.
• . Superconductors
cooled by liquid
helium or liquid
nitrogen are used in
the train and the track.
The JR-Maglev
21. THE
INDUCTRACK
• Improved version of
the EDS
• Arrays of permanent
magnets called
HALBACH ARAYS
are used instead of
SUPER
CONDUCTING
COILS
Picture of THE INDUCTRACK
22. THE
INDUCTRACK
• Does not require
feedback system
• Does not require
cooling
• Less expensive than
the EDS and the
EMS systems.
• It’s only in the trial
stage
A full-scale INDUCTRACK test track is
nearing completion at GENERAL
ATOMICS IN SAN DIEGO
23. ADVANTAGES OF MAGLEV TRAINS
• An average speed of
300mph is achieved.
• Time taken to reach
destination is as
good as an airplane
[including check in
and check out time ].
• Safer as there is no
risk of derailing.
24. ADVANTAGES OF MAGLEV TRAINS
• As there is no
mechanical friction ,
lesser maintenance
is required.
• No energy is wasted
as only the part of
the track that is to be
used is electrified.
The full track is not electrified
27. A:
C:
B:
D:
The JR Maglev The Hyderabad Metro Rail
The Transpid The Inductrack
Next Question
2 minute quiz
Which of these trains is not a Maglev train?
1 / 3
28. Next Question
You are correct
The HYDERABAD METRO RAIL is a wheeled mass
transit system. It's speed is 80km/hr
30. A:
C:
B:
D:
lesser people more power
no surface friction because of it's shape
Next Question
2 minute quiz
Why are Maglev trains faster than the wheeled trains?
2 / 3
31. There is only air friction in Maglev trains.
Even this friction can be eliminated if the
train is run in vacuum tunnels
Next Question
You are correct
33. A:
C:
B:
D:
Professor Eric Laithwaite Rafael Nadal
Adam Gilchrist Morris Mano
2 minute quiz
The person who developed the first full-size working model of
linear induction motor, also developed the working Maglev
system. Identify the person.
3 / 3
34. You are correct
In the late 1940s, Professor Eric Laitwaite of Imperial
College ,London developed the first full-size working
model of the linear induction motor. In the early 1970s,
Laithwaite developed the maglev system.