Maglev

INTRODUCTION  Exponential

increase in the demand of transportation.  Greater speed & efficiency required.  Superior technology used by MAGLEV.  High efficiency of system.  Advantage of being faster, safer, smoother than conventional trains.  Changing the face of future railroad technology.

HISTORY….  1972:LSM

propulsion experimental super conducting MAGLEV succeeded in levitated run.  1980:Test run of MLU001 started on Miyazaki test track.  1993:Test run of MLU002N started.  1997:MLX01 attained 531kmph.  2003:600kmph achieved.

BASIC PRINCIPLE…  As

the name signifies, it’s a magnetically levitated train, levitated above the rail by a magnetic force. Since ordinary magnets can’t be used to levitate a train, so its not as easy as it sounds.  At present, the MAGLEV is still in an experimental state & the three basic ways of levitating are:-

ELECTROMAGNETIC A

new technology called the “Transpid” system .  Uses the principle of electromagnetic suspension.  Magnets embedded on the guidance rail & the under carriage oriented in same direction.  Levitation up to 1cm.

ELECTRODYNAMIC(EDS)  Train

travels on a guide way having a series of “8” shaped coils.  Super conducting magnets induces a current on the coils.  Polarity of “8” shaped coils & super conducting magnets are same in the lower half.  Magnetic flux induced & the train is levitated.

Motion of the Train(EDS)  The

train in motion along with the super conducting magnets induces currents on the guide way.  Based on this principle the system inputs A.C currents producing alternate series of north & south poles.  This push & pull of the super conducting magnet accelerates the train.

INDUCTRACK A

new approach to levitate high speed train.  Fundamentally much simpler in design & operation.  Much less expensive & very adaptable.  Special arrays of permanent magnets are used.  Totally Passive Technology (TPT)  Has been awarded a 3 year contract by NASA to launch satellites in space.

PRINCIPLE(INDUCTRACK)  Two

basic components:

– A special array of permanent room temp.

magnets mounted on the vehicle. – Track embedded with closed packed coils of insulated copper wires. – Magnets arranged in special configuration called “Hal Bach arrays”.  Car

is stably lifted & stably centered.

Model Description….  Magnetic

Wheels:

– Circular electromagnets placed at the bottom

of the train. – Causes repulsion & train can float on track.  Electromagnets:

BODY…. The

body is of two parts:

– 1.Track(Stationary) U shaped guide way which holds the train.  Also forms a base to the rails made of magnets. 

– 2.Train(Movable) 

Main part of the body which is pushed forward.

External Power Source. An

auxiliary power source is needed to maintain the trains high speed against aerodynamic drag. Mainly employed in the “INDUCTRACK” system.

Latest On MAGLEV.  China

made the first MAGLEV.  First Transpid MAGLEV has started from Shanghai city centre to Shanghai Airport.  Berlin-Hamburg Germany line: – This 292kms long line is expected to be completed by

2005.

 January

2003

– Maglev Gets Off the Ground in China .It doesn't have

wheels, wings or a motor, yet it can travel at up to 600 kilometers per hour.

CONCLUSION From the movement of the train it is concluded that it has no friction so the efficiency is high. As it moves on electric power it solves the problem of pollution &

EDS System…..

Electromagnetic System..

A.C Current Input

Motion Of The Train

INDUCTRACK N.A.S.A.

TRACK

TRAIN

POWER SUPPLY

HALBACH ARRAYS

Stability of INDUCTRACK.

PROPULSION COILS(EDS)

MAGNETIC WHEELS

INSPIRATION… 1.Dr. Mrs. S.p.wankhede (h.o.d physics)

2.miss. M. kale (lecturer)

[email protected]

[email protected]

PEEP INTO THE FUTURE…