MANGLEV BY ISHAAN GUPTA ECE123 03914802810 OUTLINE Two Types Maglev Full scale speed 500 km hr Types EMS ServoControlled Electromagnets Ironplate rail Magnetic attraction ID: 596789
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Slide1
TRANSRAPID
MANGLEV
BY– ISHAAN GUPTAECE-12303914802810Slide2
OUTLINESlide3
Two
Types
Maglev
Full scale speed
500 km/
hrSlide4
Types
EMS
Servo-Controlled
Electromagnets
Iron-plate rail
Magnetic attraction Slide5
Magnetic repulsion
EDS
Superconducting
Induction
CryogenicSlide6
EMS
system: The German Trans-Rapid TR08 demonstration train and 30 kilometer test track, with operating speeds up to 450 km/hr.Slide7
EDS system
: The Japanese Yamanashi demonstration train, with speeds of 500 km/hr on a 18 kilometer test track. Slide8
Maglev
workingSlide9Slide10
The magnets on the side
=> Sharper turnsAn on-Board Master computer => Efficient LevitationSlide11
Propulsion
SystemSlide12Slide13
Three Phase Motor GUIDE-WAYSlide14Slide15Slide16
The system consists of aluminum three-phase cable windings in
stator packs on
guide way.
When current is supplied to the windings, it creates a traveling alternating current that propels the
train.
When AC
is reversed, the train
brakes.
Different
speeds are achieved by varying the intensity of the
current.
Only a
section of
track of train travel area is
electrified
.Slide17
The
J
apanese maglev uses superconducting magnetsSlide18
Lateral Guidance
T
he super conducting
magnet induces repulsive-attractive forces keeping the train in the center of the guide way.Slide19
The German Trans-Rapid
Maglev Slide20
The Japanese
YamanashiSlide21
Contactless energy
transfer system
Linear electric motor
and guidance system
Magnetic levitation
inductor
Emergency pavement
Emergency guidance
And braking system
Swiss-MetroSlide22
Lock./07
Inductrack System Slide23
The Inductrack S
ystemSlide24Slide25Slide26Slide27
Guide rails to prevent
magnets from hitting
track prior to levitation
One of 6 magnets
(3 front, 3 back)
that provide levitation
and centering forces
Steel box beam
Drive &
levitation
coils in
track
C-fiber
cradle
with ribs
to support
magnetic force
Fiberglass I-beamSlide28
Lock./19Slide29
The levitation and drag forces of the Inductrack can be analyzed using circuit theory and Maxwell’s equationsSlide30
To analyze the Inductrack we start with the equations for the magnetic field components of a
Halbach array
B
r
=
Remanent
field (Tesla),
M
= no. of
magnets/wavelength.
d(m)
= thickness of
Halbach
array magnets,
k
= 2π/lSlide31
Integrating
Bx in y gives the flux linked by the Inductrack circuits and yields equations for the Lift and Drag forces
w = width of
Halbach
array,
L,R
= circuit induct./resistance
Newtons/circuit
Newtons/circuitSlide32
Dividing
<Fy
> by <Fx >
yields an equation for the Lift-to-Drag ratio as a function of the track circuit parameters.
The Lift/Drag ratio increases linearly with
velocity, and
with the L/R ratio of the Inductrack track circuits.Slide33
The levitation efficiency (Newtons/Watt) can be determined directly from the equation for the Lift/Drag ratio
Newtons/Watt
Typical K values: K=1.0 to 5.0, depending on track designSlide34
Application
InfoCommSlide35
Safety
V
irtually impossible to
derail.
Collisions between trains unlikelySlide36
Maintenance
Contactless journey..
SO,NEARLY NO MAINTAINANCE!!Slide37
Comfort
The ride
at nearly 500km/hr
is smooth while not
sudden accelerating. (
Which, is also unlikely!)Slide38
Economic
EfficiencyThe initial investment similar
but operating expenses are half.Can take 200-1000 passengers in single runSlide39
The linear generators produce electricity for the cabin of the train
.Slide40
Speed
Can travel at about 300 mph
.For trips of distances up to
500 miles its total travel time is equal to a planes
It can accelerate to 200 mph in 3
miles.
=>ideal
for short jumps
.Slide41
EnvironmentSlide42Slide43Slide44Slide45Slide46
MagLev vs. Conventional Trains
MagLev Trains
Conventional Trains
No Friction = Less Maintenance
Routine Maintenance
Needed
No Engine = No fuel required
Engine requires fossil fuels
Speeds in excess of
300 mph
Speeds up to 110 mphSlide47
Summary
Magnetic levitation (maglev) trains have been under development for many years in Germany and Japan for high-speed rail systems.Maglev would offer many advantages as compared to conventional rail systems or inter-city air travel.
The cost and complexity of presently developed high-speed maglev trains has slowed their deployment.The Inductrack maglev system, employing simple arrays of permanent magnets, may offer an economic alternative to existing maglev systems.The simplicity of the Inductrack may make it attractive for use in a variety of applications, including urban maglev systems, people movers, and point-to-point shipment of high-value freight
The Inductrack, employing Halbach arrays, is an example of a practical application of the results of fundamental studies in magnetics and particle-accelerator physics.Slide48
References
Bonsor, Kevin. “How Maglev Trains Work”. 5 September, 2002. <http://travel.howstuffworks.com/maglev-train.htm>
Keating, Oliver. “Maglevs (Magnetically Levitated Trains)”. 16 June, 2000. <http://www.okeating.com/hsr/maglev.htm>Disney Online. “California Screamin’”. August, 1999. <http://disneyland.disney.go.com/disneyland/en_US/parks/attractions/detail?name=CaliforniaScreaminAttractionPage>
MagLev Systems. “Electromagnetic Systems”. General Atomics and Affiliated Companies. 2005. <http://www.ga.com/atg/ems.php>.
Lockhem tech.http://www.google.com