A high speed maglev train uses noncontact magnetic levitation, guidance and propulsion systems and has no wheels, axles and transmission. Maglev short for magnetic levitation trains can trace their roots to technology pioneered at brookhaven national laboratory. The shanghai maglev appears to be the only true commercial maglev train. Jun 14, 2016 in maglev, superconducting magnets suspend a train car above a ushaped concrete guideway. Magnetic levitation is a technology that uses magnetic fields to make the train move. James powell and gordon danby of brookhaven received the first patent for a magnetically levitated train design in the late 1960s. 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. In this technology lesson, students discuss the pros and cons of maglev compared to conventional trains.
Figure 1 shows a diagram of the forces acting on the maglev. Transrapid is a germandeveloped highspeed monorail train using magnetic levitation. A maglev s guideway has a long line of electromagnets. English 250207 summary introduction how does it work. Maglev trains incorporate a basic fact about magnetic forceslike magnetic poles repel each other, and opposite magnetic poles attract each otherto lift, propel, and guide a vehicle over a track or guideway. T railway technology today 12 edited by kanji wako magnetic. The basis of maglev trains mechanisms are magnetic levitation. Above is an image of the guideway for the yamanashi maglev test line in japan. The shanghai maglev train or shanghai transrapid chinese. A train as fast as an aeroplane maglev train facts for. Weight is the force that pulls an object down toward the earth because of gravity. The train will be propelled to move by the guide way itself.
This book describes a number of essential technologies that can ensure the safe operation of maglev trains, such as suspension and orientation technologies, network control and diagnosis technologies. To picture how a maglev train is propelled forward, think of three bar magnets lined up on the floor. Trains remain a popular choice for transporting heavy freight across long distances. Advantages and disadvantages of maglev trains wheelzine. The line is the third commercially operated maglev line in history after the british birmingham maglev and the german mbahn, the oldest commercial maglev still in operation, and the first commercial highspeed maglev with cruising. Much like a fullsized maglev system, the track and train need to be precisely. Instead, they move along superconducting magnetic rails. Lateral guidance basic principle of maglev trains 8. Richard post from lawrence livermore national labs llnl. This increases efficiency, reduces maintenance costs, and increases the useful life of the system.
Thus, there is no need of any engine inside he train. In the dream big maglev train lesson, students designed a magnetic train system. Maglev train guideway to the new journey submitted by. The japanese have been even bolder and have long hoped to develop a highspeed maglev train that can travel the 320 miles 515 km from tokyo to osaka in just one hour.
These trains float over guideways using the basic principles of magnets to replace the old steel wheel and track trains. Picture courtesy of us department of energyargonne national laboratory. This maglev model accurately reproduces the setup of magnets used in shanghais maglev system and is made up of two parts. Maglev train ppt 1 train rail transport free 30day. Maglev train ppt 1 free download as powerpoint presentation.
The train propels forward without any friction from moving mechanical parts. We could use normal magnets, but their magnetic power is limited. Planning for the transrapid system started in 1969 with a test facility for the system in emsland, germany completed in 1987. The magnets on the side keep the train from moving from side to side. Maglev train, a floating vehicle for land transportation that is supported by either electromagnetic attraction or repulsion. The result is a transport system which can regularly attain much higher speeds than more conventional rail systems.
The key difference between japanese and german maglev train technology is that the japanese trains use supercooled, superconducting electromagnets. The maglev train is still under development and many scientists are working on the project. The key difference between japanese and german maglev train technology is that the japanese. Germanys maglev line, transrapid, is rather infamously known for its collision in 2006 that killed 25 people. These trains, known as maglev trains, dont have traditional wheels. In 1991 technical readiness for application was approved by the deutsche bundesbahn in cooperation with renowned universities the last version, the transrapid 09, is. 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 train will be floating about 10mm above the magnetic guiding track. Design and control of levitation and guidance systems for. If you are using sandpaper to make your wooden block into a train shape, be sure to leave a flat surface in the middle on top of the train. The most efficient way to produce the most powerful magnetic field we know of today, with a reasonable energy cost, is the use of superconducting coils, as in. The word maglev is actually a combination of the words magnetic and levitation. A magnetically levitated maglev train developed by central japan railways co.
Today, passenger trains can move at incredible speeds over long distances using magnetic levitation technology. Maglev is a method of propulsion that uses magnetic levitation to propel vehicles with. The maglev project consists of two construction phases. Maglev systems have been built for decades, and though they started slow, some of the latest generation trains are breaking speed records. The three components to this system are a large, electrical power source, metal coils lining a guideway or track, and large guidance magnets attached to the underside of the train. 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.
Compared to conventional wheeled trains, differences in construction affect the economics of maglev trains. These trains follow magnetic guiderails instead of conventional rails. Magnetic levitation maglev is an innovative transportation technology. Maglev trains use superconductor magnets that are cooled to incredibly low temperatures to produce intense magnetic fields used to drive the train forward and keep it hovering off of the tracks. However, the latest innovations in train technology have come from the work of electrical engineers, through the design of maglev train technology. If a maglev wants to use this force to levitate, it needs a strong magnetic field in its wagons. Other guidance magnets in the train s body keep it stable during travel.
It is a train that doesnt have to run off of regular fossil fuels like other trains, the energy can be obtained from other sources. The shanghai maglev train, the worlds fastest passenger train, regularly exceeds 267 mph 430 kmh. Furthermore, we need to use the feedback series both as an input series and target series. The main difference between eds maglev train and ems maglev train is that eds maglev train use supercooled, superconducting electromagnets. Application information about transrapid magnetic lift trains. It is a way of moving vehicles without having them touch the ground. By 2035, a trip from toronto to vancouver will take 3 hours. Like ordinary magnets, these magnets repel one another when matching poles face each other. Maglev trains work on the principle of magnetic repulsion between the cars and the track.
Before we can train the network, we must use the first two timesteps of the external input and feedback time series to fill the two tap delay states of the network. Maglev trains are magnetically levitated trains that traverse in a very high speed, with only electricity being its main source of energy. All about maglev trains how it works, countries, nasa. The magnetic levitation technology can be used as an efficient technology in. Maglev trains key underlying technologies zhigang liu. Maglev train propulsion and levitation may involve the use of superconducting materials, electromagnets, diamagnets, and rareearth magnets. 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. Theres no rail friction to speak of, meaning these trains can hit speeds of hundreds of miles per hour. Maglev trains use electromagnets to lift the whole train into the air a short distance. These fields lift the train a small distance above the tracks and moves the train. How transrapid works support system the electromagnets on the underside of the train pull it up to the ferromagnetic stators on the track and levitate the train. Maglev trains operating at slower speeds are currently in use in china and south korea.
This was the first major collision involving a maglev train, and. With maglev vehicles travel along a magnet guideway. Maglev trains eddie lim 20 lim zheng xiang 21 anthony low 24 class. A free powerpoint ppt presentation displayed as a flash slide show on id. Jan 31, 20 maglev trains are trains which are suspended, guided and propelled moved forward by magnetic forces. Figure 1 show the sides of the magnets are repelling each other and one is repelling another into the air, which makes them levitate. The magnetic levitation technology can be used as an efficient. 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. The repelling of the magnets makes the train float. Using magnets for transportation vanderbilt university. Maglev is a method of propulsion that uses magnetic levitation to propel vehicles with magnets rather. Levitation maglev trains have no contacts with the rails while they move forward. The maglev transportation system is more stable, faster, economic, efficient.
Maglev trains have a surprisingly few number of moving parts compared to traditional trains. A new way to travel 4 maglev vehicle traveling at 300 mph only consumes 0. In the case of a maglev train, this magnetic force is used to push against the train s weight. The key difference between japanese and german maglev train technology is that the japanese trains use supercooled. 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 detailed working of maglev train is shown in the figure below. Japanese engineers have developed a competing version of maglev trains that use an electrodynamic suspension eds system, which is based on the repelling force of magnets. The name maglev is derived from magnetic levitation. Maglev trains run on electricity from nearby power plants which are fed through magnetic coils. The train is propelled by the changing in magnetic fields. This project is a continuation of work done by paul friend in 2004.
Hello everyone and welcome to my youtube channel where the video is all about. A computer changes the amount of current to keep the train 1 cm from the track. The function preparets prepares time series data for simulation and training for us. While the amazing speed that maglev trains boast of make them seem an apt solution for our transport woes, only a proper evaluation of their advantages and disadvantages can help us get a clear picture about the feasibility of. The basic idea is to use magnets to power the 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 advantage of the lack of friction. These principles govern the levitation of maglev trains.
Maglev trains have to perform the following functions to operate in high speeds 1. Instead of using fossil fuels, the train is propelled forward by the magnetic field created by the electrified coils. The track of the maglev train is called the guideway. This same trip takes three days on a regular train. Japans maglev train 1 hitech kids web japan web japan. The train is driven by a new kind of motor called a superconducting linear motor. How it works scthe worlds fastest trainmaglev baltimorewashington rapid rail, llc bwrr is a marylandbased, 100% usowned company formed to develop the superconducting maglev project. While the amazing speed that maglev trains boast of make them seem an apt solution for our transport woes, only a proper evaluation of their advantages and disadvantages can help us get a clear picture about the feasibility of putting them to use. Along certain mediumrange routes usually 320 to 640 km 200 to 400 mi, maglev can. Jr japans maglev traveling at 500 kmh 311mph duration. The maglev train has a different working principle from conventional wheelrail train driving forward by frictions, as it achieves levitation through interaction between the magnets aboard and the rails and produces propulsion force electromechanically without contact with the rails 3. It is sometimes said to be the first fundamental innovation in the field of railroad technology since the invention of the railway. The idea came to powell as he sat in a traffic jam. How it works the maglev train isnt like an ordinary train that one would see driving throughout the united states carrying coal, cargo, and much more.
In the 21st century there are a few countries using powerful electromagnets to develop highspeed trains, called maglev trains. T railway technology today 12 edited by kanji wako. This superconducting electromagnet can conduct electricity even after the power supply has been shut off for example in the event of a blackout. Magnetism provides the force required to levitate the train over the tracks, reducing the energy required to move the train. Jun 23, 2016 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. In the 1860s, a transcontinental railroad turned the monthslong slog across america into a weeklong. Electromagnets under the train are directed up toward the guideway, which lifts the train about of an inch 1 centimeter above the guideway. Working of the maglev trains can be studied under the following. 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. The evolution of mass transportation has fundamentally shifted human civilization. Magnetic levitation is a highly advanced technology.
The goal of the magnetic levitation train maglev project is to develop a small scale magnetic levitation train based on inductrack technology developed by dr. Seminar paper from the year 2008 in the subject engineering industrial engineering and management, grade. Maglev train simple english wikipedia, the free encyclopedia. Levitation the passing of the superconducting magnets through levitation coils on the side of the track induces a current in the coils and creates a magnetic field. Maglev is a system in which the train runs levitated from the guideway by using. The common point in all applications is the lack of contact and thus no wear and friction. Maglev systems are currently in use for applications such as bearings, highspeed trains, and manufacturing. The coils are a part of the motor that moves the train by adding magnetic forces to propel the train. The motion of the train depends on the traction of linear motors in the vehicle. Worlds first commercial maglev train is in shanghai that runs between pudong international airport and the lujiazui financial district.
Dec 06, 2017 all about maglev trains how it works, countries associated, maglev of nasa, construction, ems and eds and much more. If the magnetic force is strong enough, it can overcome the train s weight and push it up into the air. The magnetic levitation, or floating of the train, is achieved through the use of an electrodynamic suspension system, or eds. The engineering challenge is to get a train to move three feet without making physical contact with the track. Once the train is floating, electric currents are passed through these coils, causing a system of magnetic forces that moves the train forward at a fast speed.
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