The name maglev is derived from magnetic levitation. This book provides a comprehensive overview of magnetic levitation maglev technologies, from fundamental principles through to the stateoftheart, and describes applications both realised and. The maglev trains are much faster than traditional trains because the levitation has less friction to overcome. Magnetic levitation is a way to suspend objects in air without any support, as if in defiance of gravity. The magnets used in magnetic levitation suspend an object free of contact with any surface, making it particularly appropriate for highspeed 275300 mph435475 kmh transportation, where it greatly reduces friction and allows for fast, quiet operation. It is specifically developed for train transportation. Magnetic levitation principle of operation, maglev. Modeling and control of a magnetic levitation system. A magnetic levitation sliding structure including a first slide member, and a first magnetic portion which is disposed in the first slide member to extend along the lengthwise direction of the first slide member and has magnetic poles arranged perpendicular to the lengthwise direction of the first slide member with the lengthwise direction of the first slide member being an extending direction. T he idea of using magnetic levitation maglev for transportation has. Maglev is short formagnetic levitation, which means that thesetrains will float over a guideway using the basicprinciples of magnets to replace the old steel. Magnetic levitation is the use of magnetic fields to levitate a usually metallic object. By the 1930s, hermann kemper was able to successfully develop a concept for the magnetic levitation using the principle of electromagnetic attraction. If magnetic repulsion is used, it is known as magnetic levitation.
This book provides a comprehensive overview of magnetic levitation maglev technologies, from fundamental principles through to the stateoftheart, and describes applications both realised and under development. Magnetic force is used to counteract the effects of the gravitational acceleration and any other accelerations the two primary issues involved in magnetic levitation are lifting forces. Railway technology today 12 edited by kanji wako magnetic levitation maglev technologies the tokaido shinkansen began operations in 1964 and was an immediate success. In the past, magnetic levitation was attempted by using permanent magnets. For decades, conventional trains, a major source of land transportation, have served people around the world. The top is spun on a lifter plate on a permanent magnet base and then raised to the levitation height. Halbach magnetic rotor development nasatm2008215056 february 2008. The ball elevation from the post is measured using a sensor embedded in the post. Maglev derived from magnetic levitation is a system of train transportation that uses two sets of magnets, one set to repel and push the train up off the track, and another set to move the elevated train ahead, taking advantage of the lack of friction. Introduction from the principal point of view, the magnetic levitation is a method which is used for suspending an object in the air, without any physical contact. It is proved that magnetic levitation cannot be obtained just by using static ferromagnetism, as the object would tend to gain instability. Maglev derived from maglev could be a conveyance technology that uses magnetic levitation to move vehicles while not creating contact with the bottom or an electrical pickup.
The principle of magnetic levitation is that a vehicle can be suspended and propelled on a guidance track made with magnets. Magnetic levitation in antiquity and the middle ages pdf. The phenomenon, also known as maglev, has long been recognized as having. Along certain mediumrange routes usually 320 to 640 km 200 to 400 mi, maglev can compete favorably with highspeed rail. The magnetic levitation is an extremely efficient system for wind energy. Although magnetic levitation has previously been used for macroscale objects, its use in life sciences has been hindered by the inability to levitate microscale objects and by the toxicity of metal salts previously applied for levitation. But though magnetically levitated trains have been the focus of much of the worldwide interest in maglev, the technology is not limited to train travel.
Principle of magnetic levitation the 8 figured levitation coils are installed on the sidewalls of the guideway. Magnetic levitation is attractive alternative for fast commuting. The vehicle on top of the track may be propelled with the help of a linear induction motor. Magnetic force is used to counteract the effects of the gravitational acceleration and any other accelerations. There are, however, a few ways to levitate by getting around the assumptions of the theorem. T railway technology today 12 edited by kanji wako. Maglev, or magnetic levitation, is a system of transportation that suspends, guides and propels vehicles, predominantly trains, using magnetic levitation. Magnetic levitation maglev or magnetic suspension is a method by which an object is suspended with no support other than magnetic fields. Presents the fundamental principles governing levitation of material bodies by magnetic fields without too much formal theory. The 8 figured levitation coils are installed on the sidewalls of the guide way.
How maglev trains operate introduction magnetic levitation, or maglev, is a transport method that uses magnetic levitation to move vehicles without touching the ground. This is to certify that the work in the thesis entitled controller design for magnetic levitation system by abhishek nayak is a record of an original research work carried out by him under my supervision and guidance in partial fulfillment of the requirements for the. In principle, one could levitate a small magnet by holding a large magnet above it at precisely the right distance so that the attractive magnetic force exactly cancels the pull of gravity. Learning the theory behind a physics principle is especially fun when you can see it actually being used in the real world. The vehicle on top of the track may be propelled with the help of a linear. Magnetic levitation system in control engineering education 153 2. Maglev 1 magnetic levitation experiment quanser consulting inc. Magnetic pressure is used to counteract the effects of the gravitational and any other activities. The objectives of this project are to model and control a laboratoryscale magnetic levitation system. Magnetic levitation is being used around the world in transportation systems to offer new types of maglev trains that have magnetic tracks repelling train cars with magnetic bases. Levitation is no longer magic as we observe the physics behind magnets.
Focusing on physics, we detail the procedures generally used for measuring the vertical levitation and the lateral guidance forces in magnetic levitation and the results obtained from experiments. Administrative and governing bodies look at funding limitations and risks which are justifiable also. This setup flips the system upside down, making things a lot easier. Types of maglev trainsbased on the techniques used for levitation there are two types of maglev trains1. Magnetic levitation maglev or magnetic suspension is a method by which an object is. With maglev, a vehicle is levitated a short distance. In a typical system, the vehicle, which resembles a railroad car, travels above a.
The magnets provide support without contact or friction, allowing for fast, quiet operation. T railway technology today 12 edited by kanji wako magnetic. The first is the magnetic repulsion, which provides the force for levitation. Defines the technology of magnetic bearings, especially those based on superconductivity, and demonstrates the key roles that magnetics, mechanics and dynamics play in the complete understanding of magnetic levitation and its bearings.
If a small permanent magnet is placed above a superconductor, it can be levitated by this repulsive force. Ppt magnetic levitation powerpoint presentation free. Magnetic levitation is a way of using electromagnetic fields to levitate objects without any noise. The name maglev is derived from the term magnetic levitation. Pdf this book provides a comprehensive overview of magnetic levitation maglev technologies, from fundamental principles through to the. V3 department of mechanical engineering, magna college of engineering, magaral, chennai, india 1,2, 3. A theorem due to earnshaw proves that it is not possible to achieve static levitation using any combination of fixed magnets and electric charges. Check out the art tec magnetic levitation kit by guy marsden. If the magnetic force of attraction is used, it is known as magnetic suspension. It includes a history of maglev science and technology showing the various milestones in its advancement. When the onboard superconducting magnets pass at a high speed about several centimeters below the center of these coils, an. Pdf magnetic levitation is a way of using electromagnetic fields to levitate objects without any noise.
Design principles for magnetic levitation ieee xplore. The magnetic levitation technology can be used as an efficient technology in. Using principles of magnetism to float in the air against gravity is called magnetic levitation. Working of maglev trains electronic circuits and diagrams. Magnetic fields are conservative forces and therefore in principle have no. A free powerpoint ppt presentation displayed as a flash slide show on id. Magnetic levitation principle of operation, maglev vehicles, superconducting magnets, disadvantages of maglev vehicles, prospects for maglev vehicles. The full form and the basic working principle of maglev is called magnetic levitation.
The basic idea behind an electromagnet is extremetric ly simple, by running elec current through a wire. The principle of magnetic levitation has been known for over. The magnetic fields are used to reverse or counteract the gravitational pull and any other counter accelerations. Pdf this paper involves the design, hardware, technology, application and future uses of magnetic levitation trains.
The concept of magnetically levitated or maglev trains is of very much interesting. Trends in increased mobility of large masses with changing lifestyle for more comfort are leading to congestion on roads with automobiles. Magnetic levitation free download as powerpoint presentation. Impress your friends with this cool floating pencil trick. When the on board superconducting magnets pass at a high speed about few centimeters below the center of these coils, an electric current is induced within the coils, which acts as an electromagnet temporarily. Magnetic levitation, maglev or magnetic suspension is the method by which an object is suspended with no support other than magnetic fields. Levitation means to rise or float in the air especially in seeming defiance of gravity. The term levitation refers to a class of technologies that uses magnetic levitation to propel vehicles with magnets rather than with wheels, axles and bearings.
At first we will talk about the theory on how to achieve the suspension of a magnet in midair and then we will create a crude levitator circuit that did not work very well but still showcased how. The principle of magnetic levitation has been known for over 100 years. Manipulating magnetic fields and controlling their forces can levitate an object. Magnetic levitation, maglev, or magnetic suspension is a method by which an object is suspended above another object with no support other than magnetic fields. Static levitation means stable suspension of an object against gravity.
The team produced a design for a smallscale proofofconcept linear maglev system, measuring half meter in length, capable of levitating and accelerating a scalemodel maglev train. One way that they overcome this is the modern and growing technology known as magnetic levitation. The idea of magnetic levitation transportation was first introduced in the 1900s by robert goddard and emile bachelet. Dec 26, 2012 basic principle of maglev trainsmaglev trains have to perform the following functions to operate in high speeds1. Magnetic levitation is the process of levitating an object by exploiting magnetic fields.
Abstract the term levitation refers to a class of technologies that uses magnetic levitation to propel vehicles with magnets rather than with wheels, axles and bearings. Magnetic levitation magnetic fields are actively excluded from superconductors meissner effect. Roy introduction magnetic separation is one of the physical concentration processes that utilizes the. Nope, no photoshop and no fishing line were used to make this picture, just 100% pure physics and some patience. Magnetic levitation is the phenomenon in which two magnetic objects are repelled from each other in a vertical direction. Pages in category magnetic levitation the following 56 pages are in this category, out of 56 total. Relying on rare earth magnets, superconductors, electromagnets and diamagnets, magnetic. Model of the electromagnetic levitation device tomas hron. Magnetic levitation definition of magnetic levitation by. Wind power plant using magnetic levitation wind turbine. The control algorithm is implemented using assembly language on intel 8051 microprocessor to levitate.
Us20080182634a1 magnetic levitation sliding structure. Magnetic levitation driving without wheels presentation outline 1. An unsung phenomenon of the past which is now being put to use in a variety of interesting and useful applications. Maglev derived from magnetic levitation is a transport method that uses magnetic levitation to move vehicles without making contact with the ground. Current projects nclusion introduction maglev, or magnetic levitation, is a system of transportation. It has a single electromagnet positioned above the floating magnet. This increases efficiency, reduces maintenance costs, and increases the useful life of the system. Magnetic levitation maglev technology and applications. Maglev derived from magnetic levitation is a transportation method that uses the energy in magnetic levitation to move vehicles with no contacts between the track and moving vehicle. Here, we use magnetic levitation principles for biological charac. Magnetic levitation principles introduction magnetic fields caused. Another levitation trick involves using diamagnets to stabilize the attractive pull between two strong magnets.
The abbott centrimag abbott laboratories, formerly thoratec corporation, pleasanton, ca, usa is an extracorporeal vad that has an actively magnetically levitated rotor. Introduction magnetic levitation, or maglev, is a method by which an object is suspended above another object without any support other than. We have a levitation kit we acquired years ago that has a much simpler setup. One electromagnet pole faces a black post upon which a 2. The common point in all applications is the lack of contact and thus no wear and friction.
This paper tries to study the most important principle uses and application of magnetic levitation technology and the. With maglev, a vehicle travels along a guideway using magnets to create both lift and propulsion. Levitation coils are installed on the sidewalls of guide way. Pdf this book provides a comprehensive overview of magnetic levitationmaglev technologies, from fundamental principles through to the. In magnetic levitation, basic principles is used to suspend vehicles weighing 40 tons or more by generating a controlled magnetic force. Ppt magnetic levitation powerpoint presentation free to. In this process an object is suspended above another with no other support but magnetic fields. The second are gyroscopic effects due to the spinning of the top, which account for the stability of the levitation. Magnetic levitation magnetic devices classical mechanics. Download the seminar report for magnetic levitation. Sep 27, 2014 principle of magnetic levitation the 8 figured levitation coils are installed on the sidewalls of the guideway. A magnetic field is a field of force produced by a magnetic object. It employs diamagnetism, which is an intrinsic property of many materials referring to their. This instructable explains how you can build your own top hovering in the air like a ufo.
Maglev derived from magnetic levitation uses magnetic levitation to propel vehicles. The practice of it is not so much as one would expect. Mar 04, 2007 an education video describing how the cool technology of superconductors in magnetic levitation works. Magnetic levitation control system in stand alone analogue mode recall that the considered equipment is with a builtin power supply and in the ana. Magnetic levitation principles introduction magnetic fields are used to describe forces at a distance from electric currents. Magnetic levitation an overview sciencedirect topics.
Since then, japans shinkansen network has expanded considerably, and its success has prompted rapid development of highspeed railways in other countries. Magnetic levitation technique is found to be the main alternative to fossil fuels to overcome its less availability. Model of the electromagnetic levitation device tomas hron czech technical university in prague faculty of electrical engineering department of electrotechnology 1. Magnetic fields are used to describe forces at a distance from electric currents. Recent examples on the web the highspeed superconducting magnetic levitation system between washington and baltimore is planned with three stops. There are two main properties that allow the levitron to levitate stably. Magnetic suspension is a method by which an object is suspended with no support other than magnetic field. With that being the case, instead of going through boring derivations about magnetic levitation, we will focus on an important application, highspeed trains, known as maglev trains. The magnetic levitation and motor drive principles are identical to those of the heartmate 3 described above, so the description will not be duplicated here. Magnetic levitation is a highly advanced technology. Maglev derived from magnetic levitation uses magnetic. If a small magnet is brought near a superconductor, it will be repelled becaused induced supercurrents will produce mirror images of each pole.
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