The engine for maglev trains is rather inconspicuous. Instead of using fossil fuels, the magnetic field created by the electrified coils in the guideway walls and the track combine to propel the train.
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Rather than using fossil fuels, these trains are propelled by varying shifts in the horizontal magnetic fields that alternately attract and repel along the rails.
Even if the power goes out, levitation forces keeps the train in the air while it is traveling at high speed. The vehicle comes safely to a stop rather than suddenly falling onto the track.
Disadvantages of Maglev TrainsComplications resulting in accidents will usually lead to high human fatalities. Maglev trains are much more expensive to construct than conventional trains because of the high number of superconducting electromagnets and permanent magnets required, which are usually very costly.
On 22 September 2006, a Transrapid magnetic levitation (or maglev) train collided with a maintenance vehicle near Lathen, Germany, killing 23 people. It was the first fatal accident involving a maglev train.
The high cost of maglev systems results from the need for a stand-alone guideway construction featuring active magnetic coils embedded directly into the guideway or on the vehicle and, in the case of the Japanese design, the addition of very low temperature liquid cooled superconducting magnets.
Compared to highspeed passenger rail, maglev passenger rail consumes roughly twice the power per passenger kilometer. For commercial freight I found an efficiency figure of 520 ton-miles per gallon (660 kg-km/MJ). Assuming 70kg for the average commuter passenger this gives us an efficiency of (116 kg-km/MJ) for maglev.
In the Superconducting Maglev system, liquid helium is used to cool the superconducting material, niobium-titanium alloy, to 452 degrees Fahrenheit below zero.
Hermann Kemper (* April 5, 1892 Nortrup, Germany, in the district of Osnabrueck, † July 13, 1977) was a German engineer and is considered by many the inventor of the basic maglev concept. In 1922, Hermann Kemper began his research about magnetic levitation.
Being a fully electrified system, a maglev system can assure future passenger transport. Electrification makes it fully congruous with the renewable energy resources without any technological modifications, which provides sustainability to the system [1,2,3].
Present Maglev systems cost 30 million dollars or more per mile. Described is an advanced third generation Maglev system with technology improvements that will result in a cost of 10 million dollars per mile. Plotkin, D.; Kim, S. Lever, J.H.
Maglev trains require very straight and level tracks to maintain high speeds. This necessitates extensive viaducts and tunneling, making construction costly.
SNCF, widely regarded as one of the best high-speed rail operators in the world, has had 4 profitable years and 5 loss-generating years since 2012. The Shanghai Metro Maglev has never been profitable. Clearly, there is an issue with passenger transport. No mode of transportation can consistently generate profits.
In addition, the energy consumption can be further reduced by use of regenerative braking, an energy recovery mechanism where the kinetic energy of the train can be regained when the train slows down. Maglev is also a very cheap and efficient mode of transportation.
Maglev trains are hard and expensive to build. They don't have a good safety record. There isn't established infrastructure to maintain the trains, or people who know how.
This dreamlike experience is will soon be a reality thanks to Japan's famous Maglev bullet trains, the fastest train in the world. Japan is already well known for its extensive Shinkansen train system, which has been in operation since 1964.