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TRANSRAPID MANGLEV. BY– ISHAAN GUPTA ECE-123 03914802810. OUTLINE. Maglev. Two. Types. Full scale speed. 500 km/ hr. Types. EMS. Magnetic attraction . Servo-Controlled . Electromagnets. Iron-plate rail. EDS. Magnetic repulsion. S uperconducting. Induction. Cryogenic.

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Transrapid manglev








Full scale speed

  • 500 km/hr



Magnetic attraction



Iron-plate rail


Magnetic repulsion




EMS system: The German Trans-Rapid TR08 demonstration train and 30 kilometer test track, with operating speeds up to 450 km/hr.

EDS system: The Japanese Yamanashi demonstration train, with speeds of 500 km/hr on a 18 kilometer test track.

Maglev working


  • 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.

The in Japanese maglev uses superconducting magnets

  • Lateral Guidance in

  • The super conducting magnet induces repulsive-attractive forces keeping the train in the center of the guide way.

The Japanese in Yamanashi

Contactless energy in

transfer system

Linear electric motor

and guidance system

Magnetic levitation


Emergency guidance

And braking system

Emergency pavement


Inductrack System in


Drive & in


coils in

One of 6 magnets


(3 front, 3 back)


that provide levitation


and centering forces

with ribs

to support

Guide rails to prevent

magnetic force

magnets from hitting

Fiberglass I-beam

track prior to levitation

Steel box beam

The levitation and drag forces of the Inductrack can be analyzed using circuit theory and Maxwell’s equations

To analyze the Inductrack we start with the equations for the magnetic field components of a Halbach array

Br = Remanent field (Tesla),

M = no. of magnets/wavelength.

d(m) = thickness of Halbach array magnets,

k = 2π/l

Integrating the magnetic field components of a 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

Dividing the magnetic field components of a <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.

The levitation efficiency (Newtons/Watt) can be determined directly from the equation for the Lift/Drag ratio


Typical K values: K=1.0 to 5.0, depending on track design

Application infocomm

Application directly from the equation for the Lift/Drag ratioInfoComm

  • Safety directly from the equation for the Lift/Drag ratio

  • Virtually impossible to derail.

  • Collisions between trains unlikely

  • Maintenance directly from the equation for the Lift/Drag ratio

  • Contactless journey..

  • SO,


  • Comfort directly from the equation for the Lift/Drag ratio

  • The ride at nearly 500km/hr is smooth while not sudden accelerating.

  • (Which, is also unlikely!)

  • Economic directly from the equation for the Lift/Drag ratioEfficiency

  • The initial investment similar but operating expenses are half.

  • Can take 200-1000 passengers in single run

  • Speed the train

  • 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.

Environment the train

Summary the train

  • 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.

References the train

  • Bonsor, Kevin. “How Maglev Trains Work”. 5 September, 2002. <>

  • Keating, Oliver. “Maglevs (Magnetically Levitated Trains)”. 16 June, 2000. <>

  • Disney Online. “California Screamin’”. August, 1999. <>

  • MagLev Systems. “Electromagnetic Systems”. General Atomics and Affiliated Companies. 2005. <>.

  • Lockhem tech.