1. A SEMINAR ON MAGLEV
BY
Ganesh G. Chavan
(Automobile Engineering Department)
Mobile No.- 9422313580

2. WHAT IS MEANT BY
MAGLEV?
Maglev=Magnetic + Levitation.
Any thing which may levitate(raise or float)
by means of a magnetic power is simply
called as magnetic levitation.
The term ‘MAGLEV’ can be briefly explained by
using an example of ‘MAGLEV TRAINS’.

3. BASIC PRINCIPLE OF MAGLEV TRAINS
Maglev trains have to perform the following functions
to operate in high speeds
1.Levitation 2.Propulsion 3.Lateral
Guidance

4. Levitation
•The passing of the superconducting magnets through
levitation coils on the side of the track induces a current in
the coils and creates a magnetic field. This pushes the
train upward so that it can levitate 10 mm above the track.
•The train does not levitate until it reaches 50 mph, so it is
equipped with retractable wheels.

5. Propulsion
•An alternating current is ran through electromagnet coils on
the guide walls of the guide way. This creates a magnetic
field that attracts and repels the superconducting magnets
on the train and propels the train forward.
•Braking is accomplished by sending an alternating current
in the reverse direction so that it is slowed by attractive and
repulsive forces.

6. Lateral Guidance
•When one side of the train nears the side of the
guideway, the super conducting magnet on the train
induces a repulsive force from the levitation coils on the
side closer to the train and an attractive force from the
coils on the farther side. This keeps the train in the center.

8. TYPES OF MAGLEV TRAINS
Based on the techniques used for Levitation
there are two types of Maglev trains
1. Electro magnetic Suspension -Attractive
2. Electro dynamic Suspension –repulsive
3. Inductrack

9. EMS (ELECTROMAGNETIC SUSPENSION)
ELECTROMAGNETIC SUSPENSION USES
ELECTROMAGNETS TO LEVITATE THE TRAIN.

10. 1.LEVITATION PRINCIPLE IN EMS SYSTEM:
2.PRINCIPLE OF PROPULSION IN EMS
SYSTEM: The propulsion of the train is mainly based on
two types of motors:
Linear Electric Motor (LEM) and,
Linear Induction Motor (LIM)
IN EMS SYSTEM “LEVITATION BY ATTRACTION “ may takes place.
Attraction is caused by having the currents within each of the
circuits traveling in the same direction. It is important to note
that with attractive forces created between the train and the
track.
3.PRINCIPLE OF LATERAL GUIDENCE IN EMS
SYSTEM:
 The levitation magnets and rail are both
U shaped(with rail being an inverted U).
The mouths of U face one another.

11. PROS AND CONS OF EMS
TECHNOLOGY PROS CONS
EMS
(Electromagnetic
suspension)
-Low magnetic
fields inside and
outside the vehicle
-Commercially
available
-No secondary
propulsion system
needed
-The system needs to
be monitored by
outside system to
maintain the distance
between the Track
and the train
-Vibraitions may
occur due to
instability and outside
monitoring.

12. EDS (ELECTRODYNAMIC
SUSPENSION):
Electrodynamic Suspension uses Superconductors for
levitation,propulsion and lateral guidance

13. 1.LEVITATON PRINCIPLE IN EDS SYSTEM:
IN EDS SYSTEM “LEVITATION BY REPULSION” may takes
place.
The current in the top circuit travels in the opposite direction of the
current in the bottom; resulting in an repulsion between the two coils
2.PRINCIPLE OF PROPULSION IN EDS SYSTEM:
The propulsion coils located on the sidewalls on both sides of the
guideway are energized by a three-phase alternating current from
a substation, creating a shifting magnetic field on the guideway
3.PRINCIPLE OF LATERAL GUIDENCE IN EDS
SYSTEM:
•When one side of the train nears the side of the guideway, the
super conducting magnet on the train induces a repulsive force
from the levitation coils on the side closer to the train and an
attractive force from the coils on the farther side.
•This keeps the train in the center.

14. TECHNOLOGY PROS CONS
EDS
(Electrodynamic
suspension)
highest speed
(581 km/h)
Heavy load
capacity
Necessary use of
magneting shielding
due to the strong
magnetic fields.
The vehicle must be
wheeled to travel at low
speed.
the cryogenic system
uses to cool the coils
can be expensive.
PROS AND CONS OF EDS:

15. The Inductrack is a newer type of EDS that uses
permanent room-temperature magnets .
There are two Inductrack designs:
Inductrack I and
Inductrack II.
Inductrack I is designed for high speeds, while
Inductrack II is suited for slow speeds.
If the power fails, the train can slow down
gradually and stop on its auxillary wheels.
INDUCTRACK:

16. APPLICATIONS
 NASA plans to use magnetic levitation for
launching of space vehicles into low earth orbit.
 Boeing is pursuing research in MagLev to provide
a Hypersonic Ground Test Facility for the Air Force.
 The mining industry will also benefit from MagLev.
 There are probably many more undiscovered
applications!

17. Comfort
•The ride is smooth while not
accelerating..
Economic Efficency
•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
17 years ago.)
•Operating expenses are half of that
of other railroads.
•A train is composed of sections that
each contain 100 seats, and a train
can have between 2 and 10
sections.

18. •The linear generators produce electricity for the cabin of
the train.
Speed
•The train can travel at about 300 mph. (Acela can only
go 150 mph)
•For trips of distances up to 500 miles its total travel time
is equal to a planes (including check in time and travel to
airport.)
•It can accelerate to 200 mph in 3 miles, so it is ideal for
short jumps. (ICE needs 20 miles to reach 200 mph.)

19. 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 trains movements.
Maintenance
• There is very little maintenance because there is no
contact between the parts.

20. CONCLUSION
 Maglev 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.

21. Thank you