Maglev trains use magnetic levitation for guidance and propulsion instead of wheels on rails. There are two main types - electromagnetic suspension (EMS) which uses electromagnets and electrodynamic suspension (EDS) which uses superconducting magnets. Maglev trains have higher maximum speeds than conventional trains, produce less noise and vibration, and require less maintenance due to the lack of physical contact between train and track. Maglev is also more environmentally friendly as it is more energy efficient and does not emit greenhouse gases.

2. CONTENTS
INTRODUCTION
TYPES OF MAGLEV TECHNOLOGY
BASIC STRUCTURE
COMPARISON WITH COMMERCIAL TRAINS
ADVANTAGES
CONCLUSION

3. INTRODUCTION
Maglev is a system of transportation that suspends, guides and
propels vehicles, predominantly trains, using magnetic
levitation from a very large number of magnets for lift and
propulsion.
The highest recorded speed is 581 km/h achieved in Japan in
2003.

4. TYPES OF MAGLEV TECHNOLOGY
There are 2 notable types of maglev technology:-
• Electromagnetic suspension(EMS)
• Electrodynamic suspension(EDS)
• Induct rack

5. ELECTROMAGNETIC SUSPENSION
 Electromagnets attached to the
train
 Has ferromagnetic stators on
the track and levitate the train.
 Has guidance magnets on the
sides
 A computer changes the
amount of current to keep the
train 1 cm from the track.
 Max speed - 438km/hr
 Has on-board battery power
supply.

6. ELECTRODYNAMIC SUSPENSION
 The first major difference between
EDS and EMS is the type of track.
 EDS uses superconducting magnets
(SCM) located on the bottom of the
train to levitate it off of the track.
 The repulsive forces between the
magnets and coils lift the train, on
average, about 4 to 6 inches above the
track,
 Requires retractable wheels at low
speed , max speed – 522km/hr

7. A NEW TRACK IN THE RUNNING
(INDUCTRACK)
This system uses an “arrangement of powerful permanent
magnets, known as a Halbach array, to create the levitating
force”.
MODEL OF THE INDUCTRACK

8. BASIC STRUCTURE
Maglev Consist of Three parts
1)Levitation
2)Guidance
3)Propulsion

9. LEVITATION
In EDS , levitation coils levitate the train 10cm above the
track. Levitates when speed reaches 100km/hr
In EMS , stator & support magnet levitate the train 1cm above
the track. Levitates even when train is not moving.

10. GUIDANCE
Some systems use Null Current system
In EDS when the vehicle is in straight line , no current flows
When it moves off the line this creates changing flux,
generating a field that pushes and pulls it back to the line.
Some systems use coils that try to remain in the null flux point
between repulsive magnets and reduces eddy current losses.

11. PROPULSION
EMS systems provide levitation & propulsion using onboard
linear motor.
 EDS system and Train rapid systems levitate using onboard
magnets & use propulsion coils for propulsion .
Cost of propulsion coils increase over long distances.

12. COMPARISION WITH COMMERCIAL TRAINS
Maglev trains produce less noise than a conventional train at
equivalent speeds.
Maglev is atmosphere friendly not produce toxic Smoke
Relatively very high speed than Commercial trains.
No resistance between the rail and Track so very high speed is
attainable, that's why some times Maglev is compared with
aeroplanes.

13. ADVANTAGES
Elimination of wheel and track wear providing consequent
reduction in maintenance cost.
The absence of wheels removes much noise and vibration.
It needs less power supply.
It is more safety.
It is fire resistance.

14. CONCLUSION
Maglev will have a positive impact on sustainability. Using
superconducting magnets instead of fossil fuels, it will not
emit greenhouse gases into the atmosphere.
Maglev will contribute more to our society and our planet than
it takes away. Considering everything Maglev has to offer, the
transportation of our future is on very capable tracks.