The document discusses bullet trains, which use magnetic levitation to suspend and propel trains along guideways using magnets rather than wheels. It describes the electromagnetic and electrodynamic suspension systems that levitate the train above the track and propel it forward. Bullet trains can reach speeds over 300 mph since there is no friction, require no fossil fuels, and are safer and more efficient than conventional trains. They are better for the environment due to lower energy use and emissions.

1. The Bullet Train
Presentation by:
 J.N.Yaswanth Raj
 S.Sai Prathap

2. The Bullet Train

3. Topics
Introduction
Bullet train track
Support system
Types of Technology
Propulsion system
Bullet Vs Conventional trains
How it is better for environment

4. Introduction
 Bullet train is a system of transportation that uses magnetic
levitation to suspend, guide and propel vehicles from magnets
rather than using mechanical methods, such as friction-reliant
wheels, axles and bearings.
 Bullet train is a means of flyinga vehicle or object along a
guidewayby using magnets to create both lift and thrust, though
only a few inches above the guideway surface

5. The Bullet Train Track
Type of Magnet Uses:
This train uses superconducting electric magnets in the
vehicle to levitate and propel the train. These magnets are
cooled by liquid helium or liquid nitrogen. This means that
once electrified these magnets do not require additional
energy

6.  The magnetized coil running along the track, called
a guideway, allowing the train to levitate between 0.39 and
3.93 inches above the guideway. Once the train is levitated,
power is supplied to the coils within the guideway walls to
create a unique system of magnetic fields that pull and push
the train along the guideway.
 The electric current supplied to the coils in the guideway walls
is constantly alternating to change the polarity of the
magnetized coils. 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

7. Support system
 The electromagnets on the underside of the train pull it up to
the ferromagnetic stators on the track and levitate the train.
 The magnets on the side keep the train from moving from
side to side.
 A computer changes the amount of current to keep the train 1
cm from the track.

8. Types of bullet train technologies
 Electromagnetic suspension (EMS)
 Electrodynamic suspension (EDS)

9. Electromagnetic suspension (EMS)
 In current electromagnetic
suspension (EMS) systems,
the train levitates above a steel
rail while electromagnets,
attached to the train, are
oriented toward the rail from
below.
 The system is typically
arranged on a series of C-
shaped arms, with the upper
portion of the arm attached to
the vehicle, and the lower
inside edge containing the
magnets. The rail is situated
between the upper and lower
edges

10. Electrodynamic suspension (EDS)
 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.
 The magnetic field in the train
is produced by either
superconducting magnets or by
an array of permanent magnets .
The repulsive force in the track
is created by an induced
magneticfield in wires or other
conducting strips in the track.

11. Propulsion system
 The system consists of
aluminum three-phase cable
windings in the stator packs
that are on the guideway
 When a current is supplied
to the windings, it creates a
traveling alternating current
that propels the train forward
by pushing and pulling.

12.  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.

13.  An alternating current is ran through electromagnet coils on the
guide wallsof 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

14. Seating capacity & classes
 The train has three separate
classes namely business class,
green class, ordinary class.
 E 5 Seriesshinkansen train
configured with ten cars and
has acapacity to carry 731
passenger.
 658 seats of ordinary class,55
seats are of green classand 18
seats are in business class.

15. Bullet Vs Conventional trains
Bullet Trains
 No Friction = Less
Maintenance
 No Engine = Nofuel
required
 Speeds in excessof 300 mph
Conventional Trains
 Routine Maintenance
Needed
 Engine requires fossil fuels
 Speeds up to 110 mph

16. Application Information
Safety:
 The trains are virtually impossible to derail because the train
is wrapped around the track,because the train is wrapped
around the track
 Collisions between trains are unlikely because computers are
controlling the trains movements.computers are controlling
the trains move
Maintenance:
There is very little maintenance because there is no contact
between the parts.

17. Comfort:
 The ride is smooth while not accelerating.
Economic efficiency:
 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. Better for the Environment
 Less energy consumption because no rail-track friction.
 Requires no fossil fuel which can harm the environment.
 Less noise pollution since the train never hits the track.
 MagLev guideways and trains take up less space than
conventional trains.

19. Summary
 Bullet 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.

20. THANK YOU