Download the seminar report for magnetic levitation. When the levitated train travels along a guideway, eddy currents are induced in conductive sheetscoils by the magnetic fields. In the 1860s, a transcontinental railroad turned the monthslong slog across america into a weeklong. By using powerful magnets on both the train and the guideway, one is able to not only levitate the train which allows for higher speeds than the traditional wheel and track locomotive but also accelerate the train. Research the status of magnetically levitated trains like the one now operating in china. The magnetized coil running along the track, called a guideway, repels the large magnets on the train s undercarriage, allowing the train to levitate between 0.
Maglev does not only refer to the train but also the track on which they run. Linear electric motor lem and, linear induction motor lim3. Maglev is a system of transportation that suspends, guides and propels vehicles, predominantly trains, using magnetic levitation from a very large number of magnets for lift and propulsion. In the past, magnetic levitation was attempted by using permanent magnets. No problems were observed and on 14 april 1999, this manned 5car train set registered a record speed of 552 kmh. The shanghai maglev train shanghai transrapid was the first commercially operated highspeed magnetic levitation train line.
Magnetically levitated train takes flight us department of. The shanghai maglev appears to be the only true commercial maglev train. 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. Analysis of magnetic levitation and maglev trains narayan dutt pandey p 1 p, manikant kumar p 2. Maglev trains use the physical forces of magnetism and electromagnetism to not only levitate the train, but to push and. Characteristics of vibration in magnetically levitated trains subjected to. Why magnetically levitated trains are the transportation.
Maglev systems represent a promising evolution in the highspeed ground transportation, offering speeds in excess of 500 mph along with the potential for low operating costs and minimal environmental impact. Jun 14, 2016 it could be possible on a maglev train. At present maglev technology has produced trains that can travel in excess of 500 km 310 miles per hour. T railway technology today 12 edited by kanji wako. Design and evaluation criteria for stations of magnetically levitated trains hamid yaghoubi. V3 department of mechanical engineering, magna college of engineering, magaral, chennai, india 1,2, 3. Maglev train, a floating vehicle for land transportation that is supported by either electromagnetic attraction or repulsion.
During the build, the magnets may come loose from the track or the train. The development prospects of magnetically levitated trains compared with the electromagnetic system of trans rapid, the electrodynamic principle of mlu has one. Magnetic levitation maglev is a highly advanced technology. If magnetic repulsion is used, it is known as magnetic levitation. For decades, conventional trains, a major source of land transportation, have served people around the world. Director of iran maglev technology imt 2 faculty of civil eng. In this example, the train reaches a peak height due to. The idea has been around since 1904 when robert goddard, an american rocket. As you probably know, the north and south poles of a magnet attract, whereas two poles that are the same north and north, or south and south repel each other. Japans maglev train breaks world speed record with 600kmh test run this article is more than 5 years old sevencar magnetic levitation train hits top speed of. The m2000 quadrupole magnet module has 2 superconducting loops of width w, separated by the distance w. Paul friends research helped him plot levitation height vs. E 3rd yr 10030104045 the maglev train history in the 1960s in britain eric laithwaite developed a functional maglev train. This was the first major collision involving a maglev train, and.
There are three model electrodynamics suspension eds, electromagnetic suspension ems and inductrack. Magnetic levitation train maglev engineering seminar topics. If this happens, just reattach them using more tape so that the magnets stay secured to the lego blocks. Magnetically levitated train takes flight us department. The maglev track allows the train to float above the track through the use of repelling magnets. We feel pleased to present our formal report on maglev trains. Japans maglev train 1 hitech kids web japan web japan. More magnets in the same way support wheels have been replaced by magnetic levitation, the guide wheels mentioned above can be replaced with magnetic repulsors. The exciting final project is to build and operate a magnetically levitated train car. All structured data from the file and property namespaces is available under the creative commons cc0 license.
Maglev ppt electromagnetism classical mechanics free. Files are available under licenses specified on their description page. The guideway is the physical structure along which maglev vehicles are levitated. Check if the weight is balanced by the magnetic levitation force. This means that because people will board a magnetically levitated road system seated in their automobiles, people will not walk into coaches as they do when riding a train. Review of maglev train tec hnologies, magnetics, ieee transactions, 42, 2006, 19171925. At slow speeds, the current induced in these coils and the resultant magnetic flux is not large enough to support the weight of the train. More than 10 million passengers used this urban maglev line in its first three months of operation. The basic reason for this difference is that a magnetically levitated road will be designed so that people sit in ordinary passenger cars.
The idea has been around since 1904 when robert goddard, an american rocket scientist, created a theory that trains could be lifted off the tracks by the use of electromagnetic rails. Maglev train transportation systems and technology. At 100 kmh, it is sufficiently fast for frequent stops, has little or no noise impact on surrounding communities, can navigate short radius rights of way, and. And i was musing on the fact that electromagnetic forces are so strong, that they can keep a whole train up in the. It connects the region with the shanghai international airport and the shanghai metro. Along certain mediumrange routes usually 320 to 640 km 200 to 400 mi, maglev can compete favorably with highspeed rail and airplanes. Since the frictional force between the train and the rail limits the maximum speed of the train, some people have started to study on trains which can float above the rail, and thus the appearance of magnetically levitated train. The common point in all applications is the lack of contact and thus no wear and friction. Howell jp, aerodynamic response of maglev train model s to a crosswind guest. Experimenting with a superconducting levitation train. Magnetic levitation maglev is a system of train transportation that uses two sets of magnets, one set to repel and push the train up off the track as in levitation, then another set to move the floating train ahead at great speed taking advant. Maglev challenge both technical, financial the japan times. The magnetic levitation technology can be used as an efficient technology in.
For further information contact richard post 9254229853. Magnetically levitated trains maglev ravi kumar sahni m. This lack of friction means that they can reach higher speeds than conventional trains. In electrodynamics suspension eds, both the rail and the train exert a magnetic field, and the train is levitated by the repulsive force between these magnetic fields.
Maglev trains eliminate a key source of frictionthat of train wheels on the railsalthough they must still overcome air resistance. The magnetic field in the train is produced by either electromagnets as in jrmaglev or by an array of permanent magnets as in induct rack. It employs diamagnetism, which is an intrinsic property of many materials referring to their. The faster the train moves, the higher the train levitates. The train is driven by a new kind of motor called a superconducting linear motor. The implementation of the magnetically levitated train s mlt levitation force lf occurs during the interaction between fields of superconducting train s stc and shortcircuited tracks. Find out about equilibrium, gravity, and magnetic fields. So a magnetic field is sent down the guideway and it pulls the train along after it. To see what these trains typically look like, view. However, some form of support is needed for taking off and landing, since the eds cannot be levitated at speeds lower than 62 mph.
In this example, the train reaches a peak height due to the lessened effect of the magnets on the track. Main components for the maglev2000 system figure 1 shows a cross section of the maglev2000 superconducting quadrupole, the unique heart of the maglev2000 system. In maglev trains, the secondary is attached to the bottom of the train cars, and the primary is in the guideway. Maglev train free download as powerpoint presentation. Germanys maglev line, transrapid, is rather infamously known for its collision in 2006 that killed 25 people. Magnetic levitation maglev is a relatively new transportation technology in which noncontacting vehicles travel safely at speeds of 250 to 300 milesperhour or higher while suspended, guided, and propelled above a guideway by magnetic fields. Maglev trains were conceptualized during the early 1900s by american professor and inventor robert goddard and frenchborn american engineer emile bachelet and have been in. The name maglev is derived from magnetic levitation. If the magnetic force of attraction is used, it is known as magnetic suspension.
The magnetized coil running along the track repels the large magnets mounted on the train s undercarriage, allowing the train to levitate between 0. T railway technology today 12 edited by kanji wako magnetic. Characteristics of vibration in magnetically levitated trains subjected. The following are descriptions of the french, german, and japanese systems used for comparison to the u. Ems system 1in ems system electromagnets attract the track and the train levitate 2 linear motors are at the center of the track which propel the train. Maglev trains operating at slower speeds are currently in use in china and south korea. The evolution of mass transportation has fundamentally shifted human civilization. Nov 02, 2010 4this change in polarity causes the magnetic field in front of the train to pull the vehicle forward, while the magnetic field behind the train adds more forward thrust. Maglev derived from magnetic levitation is a system of train transportation that uses two sets. This increases efficiency, reduces maintenance costs, and increases the useful life of the system. Basic comparative study on magnetically levitated highways. A new strategy for improving the tracking performance of. It is important to note that with attractive forces created between the train and the track. In this paper we describe method and molding of maglev train and its application.
Not to hold the train up but to run sideways against guide trails to prevent the train moving of its track. Eds, both the rail and the train exert a magnetic field, and the train is levitated by the repulsive force between these. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Japans maglev train breaks world speed record with 600km. A magnetically levitated maglev train developed by central japan railways co. The new technology uses this principle to push the train. It is used in the various cases, including clean energy small and huge wind turbines. James powell and gordon danby of brookhaven received the first patent for a magnetically levitated train design in the late 1960s. Dec 26, 2012 it is important to note that with attractive forces created between the train and the track. The report focuses on the technology empowering the highly successful transportation method of maglev trains, and their advantages. The goal of this effort is to investigate the feasibility and. So far, a common bullet train can travel at a speed of 200 kmh.
Principle of lateral guidence in ems the levitation magnets and rail are. Principle of lateral guidence in ems the levitation magnets and rail are bothsystem. Learn about the maglev track and see a diagram of a magelev track. Although maglev dont use steel wheel on steel rail usually associated with trains, the dictionary definition of a train is a long line of vehicles traveling in the same direction of a train. In a way then, the entire length of a maglev track can be considered to be part of the trains motor. Eds system in eds both the rail and the train exert a magnetic field, and the train is levitated by the repulsive force between these magnetic fields. Magnetic levitation is the process of levitating an object by exploiting magnetic fields. May 14, 2018 the german transrapid maglev train has demonstrated a speed of 270 mph 121 ms on a test track, and the japanese have operated a maglev test car at 321 mph 144 ms. Maglev short for magnetic levitation trains can trace their roots to technology pioneered at brookhaven national laboratory. In may 1999, the cars were rearranged in their original configuration of two 3car train sets and highspeed tests are. The currently proposed maglev trains operate at liquid helium temperature 4.
These scientifically placed magnetic strips are built in to the side of the included guideway to allow the magnetic levitation express to hover securely and run smoothly at high speeds. The crash would not prove to be fatal since the train is levitating at a small height from the track but a proper. The linearmotor magnetically levitated train has a top speed of 100 kmh 62 mph. Submitted to the 2004 american control conference 1 lowcost. Article information, pdf download for characteristics of vibration in. Maglevs are trains that run on magnets in a certain way so that they are equally levita. Magnetic levitation is a way of using electromagnetic fields to levitate objects without any noise. His research was stopped in 1973 because lack of money and his progress was not enough. The propulsion of the train is mainly based on two types of motors. The magnetized coil running along the track repels the large magnets mounted on the trains undercarriage, allowing the train to levitate between 0. The magnetic levitation technology can be used as an efficient. Magnetic levitation is a highly advanced technology. How do magnetically levitated trains maglevs stay on the tracks. Gregory zizza science project essay maglevs maglevs magnetically levitated trains maglevs may be the transportation of the future because of their many advantages on modern transportation we use today.
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