How does the Maglev train
Source:
The idea of the trains on magnetic pillows have appeared in the early twentieth century, and the first prototype — "Transrapid 02" — was only established in 1971 in West Germany. 8 years later was created an improved model of the Maglev – "Transrapid 05", first licensed to transport passengers. A test track with a length of 908 meters was built in Hamburg for the exhibition IVA 79. The maximum speed of the train was 75 km/h. But the first commercial Maglev train came in ' 84 in the English Birmingham. 600-metre-high line connected the airport terminal and the railway station. At the same time work on the creation of Maglev started in Japan, South Korea and China. How does the Maglev train – this is in the news today!
The Maglev, or magnetic levitation train, is a composition, which is held over the road and moves by the power of the electromagnetic field. The basis of Maglev necessary basic property of magnets: equal poles repel, and different – attracted. At the moment there are two main technologies magnetic suspension: EMS electromagnetic and electrodynamic EDS.

The trains of the first type under the bottom of the car are attached powerful magnets in centimeters from the T-shaped steel blade. When the train moves, the magnetic flux passing through the loop of the fabric, constantly changing and in it there are strong induced currents. They create a powerful magnetic field that repels the magnetic suspension train. The composition is levitated by the repulsion of the same poles and the attraction of different poles of the magnets. A special system keeps the size of the gap between the magnets 15 mm constant. When increasing the gap increases the strength of the current in the bearing magnets and brings the wagon with a decrease — decreases the current, and the gap increases. Also on the electromagnetic Maglev establish a special battery that allows the train to levitate at the station.
The motion of the train is a linear motor – switches between the stator windings, creating a traveling magnetic field. The stator of the train is drawn into the field and moves the whole composition. With a frequency of 4000 times per second, the change of poles on magnets by alternately feeding current. Change forces and current frequency allows you to adjust the speed of the composition.

There is also an electrodynamic EDS-technique in which the movement of the Maglev is due to the interaction of the two fields. One of them is created in the road surface, and the second on the body of the train. Unlike EMS with conventional magnets, the EDS uses superconducting magnets, which can conduct electricity even after you turn off the power supply.
In addition, the EDS does not require special system of adjustment of the distance between the train and the tracks. When contraction occurs, the force of repulsion, which returns magnets to original position. While increasing distance increases the force of attraction that also leads to the stabilization of the system.
Another difference, according to the technology of EDS, — the need for additional wheels when driving at low speeds (up to 150 km/h). When the high wheel speed are separated from the ground and the train flies at a distance of several centimeters from the surface. Also worth noting is that due to the strong magnetic fields on the body of the train protection required magnetic shielding.
The Maglev train — this is the fastest ground-based public transport. The speed record was set by Japanese train Shinkansen L0 in April 2015 — he clocked up 603 km/h.
Recommended
Mystery of the Sargasso sea, and why there were dead ships
At the time, in the Sargasso sea lost a lot of ships. Almost all mystical place, about which people say, giving them a mysterious halo, are on the water. When ”ends”, the disappearances do seem very strange and inexplicable. One of the places that ar...
An air leak site has been found on the ISS. What's next?
Air leak occurs in Russian station module Inside the International Space Station live astronauts from different countries and all of them need oxygen. The air needed for the life of the crew is produced by special equipment, but the tightness of the ...
Why can thinking about death make life happier?
Awareness of one's own mortality can be a liberating and awakening experience How do you feel about the idea of death? How often do you think about it and what emotions do you feel? Many of us have been pondering these questions lately. The pandemic ...
Related News
Google closes the shortening service URL goo.gl
the Reduction in URLS, especially with CNC in the Russian segment of the Internet was very useful, and often of place. Yes, it was used by phishers and skamory, but to cut a link out of several dozen words or indigestible characte...
How does it work? | Snow melting installation
snow melting installation — it is a device for processing, or, in other words, melting of snow and ice in an urban environment. Their use is essential in the winter season when abundant snow utilities to take out the tons of...
the ship's hoist — it is a kind of Elevator for vessels, alternative shipping gateways, which we described in the last issue. The first experimental ship lift for lifting and lowering of boats was designed by James Fossella ...
Died last male Northern white Rhino
the Last male of Northern white Rhino (Ceratotherium simum cottoni) died in Kenya on March 19. This species was once widely distributed throughout the African continent, but closer to the middle of the XX century the population nu...
How to change the life, if the energy will be free?
the Development of technology leads to the fact that the value of many things tends to zero. What we once paid so much, now is cheap or even get for free is to buy a computer, to call on the other end of the world, take a photo, w...
How does it work? | How does the shipping lock
the First shipping lock, which was carried out alternating the alignment of the water level, was invented by Qiao, Value 984 year and built on the Great Chinese channel. The gateway was a straight section with a length of 76 meter...
Fly Elephant: first flying 3D printer
it would Seem than can surprise manufacturers of 3D printers, even if liquid metal can be used for printing? But the Chinese company DediBot all the same managed to do something unique: flying a 3D printer Fly Elephant. Well, if y...
How does it work? | Rail cable car
last week we told you about how to operate a gondola, but today we will focus on a different type of cable cars — rail. Vehicles that carry passengers on them or the goods are called funiculars. First use of the funicular as...
How does it work? | Cable-cableway
In 1834, the German engineer albert Vogts invented the metal rope of intertwined steel wires. And after three decades in the North of Switzerland near Schaffhausen has introduced the world's first cable car for passengers. With it...
the First escalator in the form of "circle stairs" was patented by the American inventor Nathan Ames in 1859, however, it has never been used. Almost 30 years later, in 1892, the American Jesse Reno patented the "inclined lift". I...
How does it work? | Introscope
introscope — it is a special x-ray device allowing for the study of internal structure of object and processes without having to open. The endoscopes are widely used for inspection of personal belongings at airports, railway...
The company Facebook has introduced a new unit of time
We are accustomed to the fact that time is measured in seconds, minutes, hours, months, years and so on. In the case where high accuracy is required, we use milliseconds or nanoseconds. It would seem, why invent the wheel and intr...
How does it work? | BitTorrent
BitTorrent — is a network Protocol for exchanging files over the Internet. It was created by American computer programmer Bram Cohen, who wrote the first torrent client "BitTorrent" in Python in April 2001. Files according t...
#CES 2018 | the Visitors had to spend several hours in the dark
a Few hours ago one of the largest technology exhibitions in the moment, the Las Vegas Convention Center, are actually frozen. The fact that the premise of almost 58 thousand square meters of unexpectedly plunged into darkness at ...
the Wi-Fi was created in 1998 in the laboratory of radio astronomy in CSIRO in Australia. The Creator of the wireless communication Protocol is engineer John O'sullivan. The term "Wi-Fi" was originally coined as a play on words wi...
Bluetooth — it is a technology for wireless transmission of data between devices at a distance up to 100 meters. Work on the creation of Bluetooth was started in 1994 by a manufacturer of telecommunication equipment Ericsson...
How does it work? | Sleep tracker
it is known that human sleep consists of repetitive cycles of REM and NREM sleep. The average duration of each cycle is approximately one and a half hours. A good rest is sleep, which includes 5 full cycles. Thus, for maximum effi...
the First pedometer was invented by the French mathematician Jean Fernely in 1525. The device was a system of gear wheels and gears that are driven by an oscillating lever. He spun the arrows on the four dials, which are consisten...
How does it work? | Portable heart rate monitor
Monitor — a device for monitoring heart rate in real time. Electrical activity of the heart was opened in the late 19th century, and in 1902, Willem einthoven was the first, who is technically registered with a string galvan...
How does it work? | A quantum computer
a Quantum computer is a computing device that uses the phenomena of quantum mechanics to transmit and process the data. The idea of quantum computing was independently proposed by Yuri mininum and Richard Feynman in the early 80-i...
Comments (0)
This article has no comment, be the first!