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DEPARTMENT OF ECE

MAGLEV PATERNOSTER

Presented ByMaria M U MTALEEC047S8,ECE-A

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Introduction. History. Basic Principle. How Maglev Works. Merits. Demerits. Future Proposals. Applications. Conclusion. References.

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Linear motor technology.

System based on magnetic levitation.

Fastest and efficient transport for mid and high-rise buildings.

Multiple cabins on single shaft.

Cable free design.

Movement in horizontal and vertical directions.

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First built in 1884 by the engineering firm of J & E Hall Ltd of Dartford.

Cyclic Elevator named as paternoster.

Passenger elevator that travels loop wise..

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Maglev technology have to perform the following functions.

1. Levitation.

2.Propulsion.

3.Lateral Guidance.

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Levitation coils fixed to the side walls of the guide way.

Induces electric current during the passage of superconducting magnets.

Creates magnetic field that levitate the lift above the guide way.

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Uses linear synchronous motor fixed to the side walls of the guide way.

Energized by 3-phase AC from substation.

Creates magnetic field on the guide way.

Exerts force that propels the elevator.

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Requires guidance force to keep the lift on track.

Caused by electromagnets.

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Based on the principle of electromagnetism.

2 ways of levitating an elevator-

1. Electromagnetic suspension(EMS). - uses attractive magnetic force of a magnet.

2. Electrodynamics suspension(EDS). - uses repulsive force between 2 magnetic fields.

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Two electromagnetic systems used in this elevator.

One system of axial wires and circular coils attached to the elevator counteract the effect of gravity, suspending the elevator.

The coils repelled by the wires thus ensures higher stability.

The coils induces surface current that exerts a force.

These coils strongly connected to the capsule, thus levitates the capsule.

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Another system of Electro dynamic Suspension used to move the elevator up or down and sideways.

The principle of the motion is that electromagnet coils attract or repel the capsule as per the relative position of the elevator thus culminating in motion.

The relative position of the electromagnets and the capsule calculated using IR proximity detectors.

Detector output fed to the control system that regulate the direction of current in the outer electromagnets, thus achieving attraction or repulsion.

The lift have buffer zones that provides high repelling magnetic field thus ensuring the safety of the elevator.

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Flow of current through electromagnet coils on the side walls of the guide way.

Creates magnetic field that attracts and repels the superconducting magnets on lift and propels the lift forward.

Braking accomplished by sending current in the reverse direction.

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Rapid transportation.

Energy efficient.

Comfortable acceleration.

Smooth/safe operation of mechanical equipment.

Improve transport capacities.

Minimum waiting time.

Light weight materials for construction. 1401/19/15 Department of ECE

High installation cost.

Large area.

Separation between lift and guide way must be constantly monitored to avoid collision due to the unstable nature of electromagnetic attraction.

As one of the elevator cabin breaks down, it affects all other cabins in that loop.

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Cable-less lifts have already been patented by American company MagneMotion.

Hitachi plans to develop a multi-cabin elevator system.

German Tech ThyssenKrupp company plans to launch the world’s first cable- free elevator system capable of moving in vertically and laterally.

It promises to increase carrying capacity by 50 per cent and save space, as it allows more than one cabin to travel through a shaft at one time.

A prototype of the system will be in operation by the end of 2016 at a 245-metre-high test tower now being built in Germany.

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Multi use buildings.

Tall skyscrapers.

Shopping malls.

Convention centers.

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System use magnets to levitate and propel the lift in horizontal and vertical directions. Less friction.

High speed with low power consumption

Fast and efficient mode of transport.

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MagLev Systems. “Electromagnetic Systems”. General Atomics and Affiliated

Companies. 2005. <http://www.ga.com/atg/ems.php >

H. Nakashima, K. Isoura, .Superconducting Maglev Development in Japan. Proceedings of

the 15th International Conference on Magnetically Levitated .2008.

CIBSE Guide D, “Transportation Systems in Buildings,” The Chartered Institution of

Building Services Engineers, London, 2010.

<www.engadget.com/2014/12/02/thyssenkrupp-multi-elevator/>

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