For example, while every highspeed rail passenger pays one dollar for each mile traveled, maglev passengers could pay as little as 5 cents per mile, says james powell, director of the company maglev 2000 and a coinventor of superconducting maglev trains. Superconducting magnets, created by cooling electromagnets to low temperatures, can reduce power consumption and cost. Maglev trains use electromagnets to lift the whole train into the air a short distance. In 2004, paul friend began working on a maglev model with the help of dr. These trains follow magnetic guiderails instead of conventional rails. The detailed working of maglev train is shown in the figure below. 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. Learn about the maglev track and see a diagram of a magelev track. Editors may also seek a reassessment of the decision if they believe there was a mistake. Electromagnets under the train are directed up toward the guideway, which lifts the train about of an inch 1 centimeter above the guideway. The term is also used to describe the beam of the system, or the trains traveling on such a beam or track. Mary dillon researched problemsolution proposal topic. A separate study of the maglev transportation option, combining regional. In eds systems, both the rail and the train exert a magnetic field, and the train is levitated by the repulsive force between these magnetic fields. Advantages and disadvantages of maglev trains wheelzine. Pdf in this paper, the dynamic behavior of timedelayed feedback control for maglev train system with double discrete time delays is considered with.
Presents an activity that explores the operation of maglev trains. Several train systems using maglev have been developed over the years, with most operating over relatively short distances. The following is a general explanation of the principle of maglev. An electromagnetic suspension ems maglev train uses. Maglev was one of the engineering and technology good articles, but it has been removed from the list. The mystery of the magnetic train skulls in the stars. This report was prepared as an account of work sponsored by an agency of. Pdf nonlinear dynamic analysis on maglev train system. Jun 14, 2016 in maglev, superconducting magnets suspend a train car above a ushaped concrete guideway. Maglev transit group mtg sandia national laboratories colorado department of transportation cdot colorado intermountain fixed guideway authority cifga urban maglev technology development program colorado maglev project part 2.
Maglev trains seminar report,ppt,pdf,doc,presentation,free. It is billed as the worlds simplest electric train, and it is almost certainly the case. Over the past year, elon musk, billionaire founder of paypal, tesla, and spacex, has been floating the notion of a hyperloop as a future replacement for bullet trains. The train will be propelled to move by the guide way itself. Once these issues have been addressed, the article can be renominated. The line is the fastest, first commercially successful, operational maglev train designed to connect shanghai pudong international airport and the outskirts of central pudong, shanghai.
Apr 30, 2015 how does it work o a maglev train floats about 10mm above the guideway on a magnetic field. Other guidance magnets in the train s body keep it stable during travel. A high speed maglev train uses noncontact magnetic levitation, guidance and propulsion systems and has no wheels, axles and transmission. 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. To meet different application requirements, there has been a variety of maglev trains, among which permanent magnet electromagnetic suspension pems type maglev train is an innovative maglev. Each implementation of the magnetic levitation principle for train type travel. A second train set was completed at the end of 1997, making it possible to conduct various tests with two trains, such as one train passing a stationary train or a train moving slowly in the same direction, or two trains travelling in opposite directions at high speed. Pdf this paper presents technology aspects and choices relative to. A magnetically levitated maglev train developed by central japan railways co. The train will be floating about 10mm above the magnetic guiding track. To picture how a maglev train is propelled forward, think of three bar magnets lined up on the floor. Maglev is a method of propulsion that uses magnetic levitation to propel vehicles with.
Maglev derived from magnetic levitation is a system of train transportation that uses two sets. The official rules in the current rules manual take precedence. Posts equations and concepts, paul was able to create a sophisticated matlab program that can calculate various train parameters velocity, drag force, etc. This attraction and repulsion that causes the maglev train to propel forward can be seen in step 1 of figure 3 as the south magnetic force on the edge of the train is attracted to the north magnetic force located on the guideway green arrow connecting yellow s box to blue n box, top right of the train in step 1. The train is propelled by the changing in magnetic fields.
Cost reduction by eliminating friction, maglev trains use less energy and can significantly reduce costs. This past week, thanks to laughing squid and other sources, a lot of people watched and were amazed by this simple demonstration of electromagnetism in action. Theres no rail friction to speak of, meaning these trains can hit speeds of hundreds of miles per hour. It is estimated that a future maglev may travel at a speed as high as 500 kmh, which doubles the speed of the existing fastest train. In the 1860s, a transcontinental railroad turned the monthslong slog across america into a weeklong. Before joining kyusyu university, he served as an assistant researcher at the. The transrapid maglev train can reach 300 mph 490 kph with passengers. Maglev short for magnetic levitation trains can trace their roots to technology pioneered at brookhaven national laboratory.
Compared to conventional wheeled trains, differences in construction affect the economics of maglev trains. Maglev systems are becoming a popular application around the globe. James powell and gordon danby of brookhaven received the first patent for a magnetically levitated train design in the late 1960s. Get the knowledge you need in order to pass your classes and more. Come browse our large digital warehouse of free sample essays. The concept of magnetically levitated or maglev trains is of very much interesting. A maglev train car is just a box with magnets on the four corners, says jesse powell, the son of the maglev inventor, who now works with his father. Dec 20, 2014 this is a very simple explanation on the physics behind a maglev train. Maglev trains work on the principle of electromagnetic propulsion, wherein the cars are suspended, guided, and propelled using powerful magnets. T railway technology today 12 edited by kanji wako magnetic. Of course this is the basis and simple principle of maglev and linear induction technology. There are suggestions below for improving the article to meet the good article criteria. Technology and working of maglev trains fig 21 internal. Each implementation of the magnetic levitation principle for traintype travel.
Magnetic levitation maglev is an innovative transportation technology. Brandon gilmore, jeff deely, magnetic levitation transportation by the use of electromagnets in maglev trains, a11, paper 3068, april 20. The result is a transport system which can regularly attain much higher speeds than more conventional rail systems. The evolution of mass transportation has fundamentally shifted human civilization. Using only a battery, some strong magnets and some bare coiled copper wire. It is sometimes said to be the first fundamental innovation in the field of railroad technology since the invention of the railway. Basic maglev train and its working linkedin slideshare. 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. Review of maglev train technologies article pdf available in ieee transactions on magnetics 427.
A maglev s guideway has a long line of electromagnets. Thus, there is no need of any engine inside he train. The magnet in front is pulling with an attracting opposite magnetic pole and the magnet in back is pushing with a repulsing similar magnetic pole. The line is the fastest operational highspeed maglev train, designed to. The shanghai maglev train, also known as the transrapid, has a top speed of 430 kmh 270 mph. These trains float over guideways using the basic principles of magnets to. The electromagnetic force is used to counteract the effects of the gravitational force. A monorail is a railway in which the track consists of a single rail or a beam. When one side of the train nears the side of the guideway, the super conducting magnet on the train induces a repulsive force from the levitation coils on the side closer to the train and an attractive force from the coils on the farther side. Magnetic levitation principles introduction magnetic fields are used to describe forces at a distance from electric currents. Many maglev projects are controversial, and the technological potential, adoption prospects and economics of maglev systems have often been hotly debated. In the 21st century there are a few countries using powerful electromagnets to develop highspeed trains, called maglev trains. Nonfunctioning magnetic levitation maglev train at old dominion university odu thesis.
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 as in levitation hence maglev, magneticlevitation, then another set to move the floating train ahead at great speed taking advantage of the lack of friction. The force can be developed from first principles using maxwells equations, or by using the. The maglev track allows the train to float above the track through the use of repelling magnets. For those who are interested, there is a new 2014 teaching dvd for maglev available in the science olympiad store. In principle, maglev vehicles may have a variety of applications, ranging from.
Maglev trains are popular in transportation stations in big countries like germany, china, japan and the united states of america due to the demand for highspeed transportation, as the general public transportation services become more congested with increase of population. Like ordinary magnets, these magnets repel one another when matching poles face each other. Within certain medium range locations usually between 200400 miles. The maglev train system has three important components the power source, the track referred to as the guideway, and the gigantic magnets that are attached to the carstrack. These trains float over guideways using the basic principles of magnets to replace the old steel wheel and track trains. Optimizing the controller design to guide the motion of a maglev train. Safety of high speed magnetic levitation transportation.
These classes have emerged from the differences in system engineering for. Prashant zanwar university of central florida maglev. The approach to calculate the aerodynamic drag of maglev. The term originates from joining mono meaning one and rail from 1897, possibly from german engineer eugen langen, who called an elevated railway system with wagons suspended the eugen langen onerailed. According to assumption 2, there is no vibration in the zdirection, which means that all of the kinetic energy of the free levitated running train is consumed because of the aerodynamic drag after the train gains the initial kinetic energy. Urban maglev technology development program colorado. If this technology was implemented in a vacuum, there would be nothing holding the train back to stop if from accelerating. In other words, by this speed, it will only take two hours to travel from paris to rome. Nov 26, 2006 for this reason the only limiting factor for a maglev train s speed is air friction. German farmers working nearby the maglev railway could hardly notice a train passes by.
However, a demerit of the maglev is the expensive construction fee of the guidance rail. The conventional trains with wheels and guide rails turn to be uneconomical beyond 200 kmhr because at this high speed, air resistance and hence the drag force increases. The force from the magnet is a function of the gap distance z and the current in the coils ic. Maglev train simple english wikipedia, the free encyclopedia. Discusses the principles of magnetic levitation presented in the physics classroom and. Jr japans maglev traveling at 500 kmh 311mph duration. Maglev is a system in which the vehicle runs levitated from the guideway corresponding to the rail tracks of conventional railways by using electromagnetic forces between superconducting magnets on board the vehicle and coils on the ground. The aim of the study was to assess the interobserver variability of the manual. A major advantage of the attractive ems maglev systems is that they are naturally stable, hence narrowing the distance between the track and the magnets. Practical applications of magnetic levitation technology maglev. About twenty years later, werner kemper of germany proposed a train magnetically levitated by a feedbackcontrolled attractive force, and after many decades of development, his idea eventually evolved into the transrapid system used in the shanghai maglev train in 2003.761 1127 592 260 1073 599 875 674 241 1369 1073 787 954 106 126 1305 672 377 8 1141 626 884 516 329 823 84 950 1376 23 589 310 1445 225 270 223 1150 144 1279 653 1250 208 379 258 709