Characteristics of vibration in magnetically levitated trains subjected. 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. Several train systems using maglev have been developed over the years, with most operating over relatively short distances. Japans maglev train 1 hitech kids web japan web japan. 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 name maglev is derived from magnetic levitation. This increases efficiency, reduces maintenance costs, and increases the useful life of the system. 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. If magnetic repulsion is used, it is known as magnetic levitation. Magnetic levitation is the process of levitating an object by exploiting magnetic fields. And i was musing on the fact that electromagnetic forces are so strong, that they can keep a whole train up in the. The faster the train moves, the higher the train levitates.
Howell jp, aerodynamic response of maglev train model s to a crosswind guest. Maglev trains use the physical forces of magnetism and electromagnetism to not only levitate the train, but to push and. The magnetized coil running along the track repels the large magnets mounted on the trains undercarriage, allowing the train to levitate between 0. Maglev train transportation systems and technology. 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. The magnetic levitation technology can be used as an efficient technology in. Maglev derived from magnetic levitation is a system of train transportation that uses two sets. However, there is hardly any report of practical algorithms for systematic calculations of loading on guideways of magnetically levitated trains. When the train moves to the next set of magnets the ones that it is attracted to there will be an attractive force that resists motion.
Japans maglev train breaks world speed record with 600km. Seminar on maglev free download as powerpoint presentation. In this example, the train reaches a peak height due to the lessened effect of the magnets on the track. In case of ems trains there is only one magnetic field to keep the train levitated and the magnetic force of attraction varies abruptly with distance, thus a small change in distance. James powell and gordon danby of brookhaven received the first patent for a magnetically levitated train design in the late 1960s. Magnetic levitation is a highly advanced technology. Linimo tobu kyuryo line, japan shanghai maglev train daejon, south korea testing tracks conducting research and development can. In this context the history and development of maglev trains is discussed. Paul friends research helped him plot levitation height vs. No problems were observed and on 14 april 1999, this manned 5car train set registered a record speed of 552 kmh. Gas passive maglev system uses permanent magnetics on vehicles and linear synchronous motors on guideways to levitate and propel vehicles. Better coordination between component design and vehicle dynamics is obtained on the hssttype system operating in the medium velocity around 200kmh.
Maglev is the first fundamental innovation in the field of railroad technology since the invention of the railroad. Practical applications of magnetic levitation technology. Article information, pdf download for characteristics of vibration in. Files are available under licenses specified on their description page. V3 department of mechanical engineering, magna college of engineering, magaral, chennai, india 1,2, 3. For decades, conventional trains, a major source of land transportation, have served people around the world. The evolution of mass transportation has fundamentally shifted human civilization. Magnetic levitation is a way of using electromagnetic fields to levitate objects without any noise. If this happens, just reattach them using more tape so that the magnets stay secured to the lego blocks. The train is driven by a new kind of motor called a superconducting linear motor. Characteristics of vibration in magnetically levitated trains subjected to. 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. The idea has been around since 1904 when robert goddard, an american rocket scientist, created a.
The currently proposed maglev trains operate at liquid helium temperature 4. All structured data from the file and property namespaces is available under the creative commons cc0 license. How do magnetically levitated trains maglevs stay on the tracks. Experimenting with a superconducting levitation train. The m2000 quadrupole magnet module has 2 superconducting loops of width w. 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. Along certain mediumrange routes usually 320 to 640 km 200 to 400 mi, maglev can compete favorably with highspeed rail and airplanes. A magnetically levitated maglev train developed by central japan railways co. Magnetically levitated trains are undoubtedly the most advanced vehicles currently available to railway industries. Optimizing the controller design to guide the motion of a maglev train. 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. The report focuses on the technology empowering the highly successful transportation method of maglev trains, and their advantages. Maglev technologies general atomics ga is a pioneer in the research and development of innovative permanent magnets and linear motors to create clean, fast and efficient transportation solutions. The china railway rolling stock corporation crrc, one of the worlds largest train manufacturers, recently announced that it had begun work on a.
By vishal dubey agenda introduction fast facts how it works maglev technology electromagnetic suspension electrodynamic suspension stability power and energy usage advantages and disadvantages of maglev train introduction magnetic levitation transport is a form of transportation that suspends guides and propels vehicles through the harnessing of electromagnetic force. E 3rd yr 10030104045 the maglev train history in the 1960s in britain eric laithwaite developed a functional maglev train. T railway technology today 12 edited by kanji wako. Main components for the maglev2000 system figure 1 shows a cross section of the maglev2000 superconducting quadrupole, the unique heart of the maglev2000 system. Pdf in this paper an overview to magnetic levitated train is presented. In the 1860s, a transcontinental railroad turned the monthslong slog across america into a weeklong. No problems were observed and on 14 april 1999, this manned 5car train set registered a record speed. To see what these trains typically look like, view. Magnetically levitated maglev trains differ from conventional trains in that they are levitated. Magnetically levitated trains the principal of a magnet train is that floats on a magnetic field and is propelled by a linear induction motor. The exciting final project is to build and operate a magnetically levitated train car. Eds, both the rail and the train exert a magnetic field, and the train is levitated by the repulsive force between these.
Magnetically levitated train is a highly modern vehicle. However, a sensor in the circuit senses the change in magnetic field, which sends a signal that causes the current to reverse. Review of maglev train tec hnologies, magnetics, ieee transactions, 42, 2006, 19171925. In the past, magnetic levitation was attempted by using permanent magnets.
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. Between 1984 and 1995 the first commercial maglev system was developed in great britain as a shuttle between the birmingham airport and a nearby rail station, some 600 metres about 1,970 feet away. Magnetically levitated trains maglev ravi kumar sahni m. Magnetic levitation principles introduction magnetic fields are used to describe forces at a distance from electric currents. Maglev guideways or tracks track repels magnets on undercarriage of train, sending the train forward. Seminar on maglev train magnetism free 30day trial. These trains are often referred to as magnetically levitated a train which is abbreviated to maglev. We feel pleased to present our formal report on maglev trains.
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. The development prospects of magnetically levitated trains. Maglev does not only refer to the train but also the track on which they run. If the magnetic force of attraction is used, it is known as magnetic suspension. Vacuum tube train systems might hypothetically allow maglev trains to attain speeds in a different order of magnitude, but no such tracks have ever been built. Magnetically levitated train takes flight us department. 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. Japan national railway remains committed to construction of a roughly 300km highspeed. Train levitates between 1 and 10 cm above guideway. In these locations, maglev trains are functional to the public.
Analysis of magnetic levitation and maglev trains narayan dutt pandey p 1 p, manikant kumar p 2. However, some form of support is needed for taking off and landing, since the eds cannot be levitated at speeds lower than 62 mph. Download the seminar report for magnetic levitation. In february 1999, to more closely simulate future commercial operations, the 3car train set was changed to a 5car configuration for performance tests at speeds in the 500kmh range. During the build, the magnets may come loose from the track or the train. The new technology uses this principle to push the train.
So far, a common bullet train can travel at a speed of 200 kmh. Magnetically levitated trains, which use the attracting and repelling forces of magnets, jet through the air just millimeters off a specialized tracksome at speeds of 550 kilometers per hour. China is building a magnetic levitation train that can go. In may 1999, the cars were rearranged in their original configuration of two 3car train sets and highspeed tests are. It employs diamagnetism, which is an intrinsic property of many materials referring to their. His research was stopped in 1973 because lack of money and his progress was not enough. Design of emsmagnetically levitated system based on. Maglev short for magnetic levitation trains can trace their roots to technology pioneered at brookhaven national laboratory. 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 603kmh less than a week. The guideway is the physical structure along which maglev vehicles are levitated.