2. What is MagLev?
• MagLev stands for Magnetic Levitation.
• Magnetic forces lift, propel and guide a vehicle over
a guideway.
• Utilizing special electrical power and control systems.
• Uses electromagnets to push/pull train along
guideway.

3. Magnets
• Opposite attract, like poles repel.
• North repels north, south attracts north.
• Super fast electro-magnets switching poles
thousands of time per minute.
• Propel the train as well as
levitate it off the track.

9. Maglev Consist of Three parts
1)Levitation
2)Guidance
3)Propulsion

11. Types of Maglev Trains
Based on the technique used for Levitation
the are two types of Maglev trains
1. Electromagnetic Suspension -Attractive
2. Electrodynamic Suspension -repulsive

12. 1) In electrodynamic suspension (EDS), both the rail
and the train exert a magnetic field, and the train is
levitated by the repulsive force between these
magnetic fields.
2) The basic Principle is based on electromagnetic
Induction
3) The superconducting magnets move at a very high
speed and magnetic field changes in the “8”
shaped coils
4) The trick is that the magnets fixed in trains moves
slightly below the center of “8” shaped coils so the
flux changing at the lower half is more then the
upper part

13. 5) The magnetic pole of the lower half is same as that
of the moving magnet so both repel Each other.
6) Upper part has a opposite polarity so it attract the
moving magnet.
7) Both forces combine and produce the component of
force that pulls the train in the upward Direction

14. What is Electromagnets?
• Current runs through a wire creates an electric
field.
• Guideway constantly changes magnetic fields.
• North vs. South Polarity

16. EDS System
1)The coils in the beam propel the train in the
forward direction.
2) Once the train is reached to a proper speed
then due to the magnetic field changing in the
“8” shaped coils north and south pole produce
which produce upward Component of force and
lift the train
3) The electric current supplied to the coils in
the guideway walls is constantly alternating to
change the polarity of the magnetized coils.

17. 4)This change in polarity causes the magnetic
field in front of the train to pull the vehicle
forward, while the magnetic field behind the
train adds more forward thrust.

20. 1) In electromagnetic Suspension train levitate
above the steel rails due to the attraction between
the opposite poles of magnets one in the guideway
and the other in the undercarriage.
2)Distance Between the rail and the undercarriage
must maintained 15mm.
3) Train also remain suspended in air when it is not
moving .
4)Guidance Magnets Ensure that the train may not
Collide with the rails During Motion.

21. 5) Minor Changing Between the Magnets and the
Rail Produces a Varying force and this force is very
unstable do Complex electronic Feedback system is
Necessary to maintain the accurate Distance.
6)The system varies the Current in electromagnets
and Control the Magnetic force of attraction.

22. EMS system
1)In EMS system electromagnets
Attract the track and the train levitate
2) Linear Motors are at the Center of
The track which propel the train.
3) Gray area is Concrete and Blue area
is Steel.

23. 1)The Maglev's speed can vary from standstill to
full operating speed by simply adjusting the
frequency of the alternating current in the stator.
2) To bring the train to a full stop, the direction of
the travelling field is reversed.
3) Even during braking, there isn't any mechanical
contact between the stator and the rotor.
4)View of the Stator from bottom==

24. 1) Onboard magnets and large margin between rail and train
enable highest recorded train speeds (581 km/h)
2) Heavy load capacity
1) Strong magnetic fields onboard the train would make the
train inaccessible to passengers with pacemakers or
magnetic data storage media such as hard drives and credit
card.
2) vehicle must be wheeled for travel at low speeds.
3) Magnetic Shielding is necessary .

25. 1) Magnetic fields inside and outside the vehicle are less than EDS.
2) commercially available technology that can attain very high speeds
(500 km/h).
3) No wheels needed.
1) The separation between the vehicle and the guideway must
be constantly monitored and corrected by computer systems to
avoid collision due to the unstable nature of electromagnetic
attraction.
2) Vibration issues may occur.