AGV (pronounced "A-Jé-Be" from French Automotrice à grande vitesse - "high-speed self-moving car") - Alstom's 4th generation high-speed trains, which are supposed to be used in France instead of the currently operating TGV . Unlike TGVs driven by electric “traction heads” (unlike electric locomotives , they are built specifically for TGV-electric trains and are inextricably linked with the electric train in which they are delivered, and they are not designed for use as independent “carriage-train” locomotives ), located at the ends of the train, at AGV engines are under the floor of passenger cars. This principle is used in ordinary electric trains and in high-speed trains, such as the German Velaro , Japanese Shinkansen and Italian Pendolino , but for the first time at AGV it was possible to combine this approach with the arrangement of motor trolleys not under the cars themselves, but under the joints between them. [one]
| AGV | |
|---|---|
| AGV | |
 Alstom AGV train traveling at a speed of 200 km / h at the Cerhenice (Velim) training ground in the Czech Republic | |
| Production | |
| Manufacturer | Alstom |
| Compositions built | 25 |
| Technical details | |
| Type of current and voltage in the contact network | 25 kV 50 Hz |
| The number of cars in the composition | 7-14 |
| Track width | 1435 mm |
| Construction speed | 360 km / h |
| Exploitation | |
| Company | |
| In operation | since 2011 |
Alstom expects the use of AGVs in a configuration of seven to fourteen railcars, with a total number of seats of 250-650 passengers. [2] The operational speed will be 360 km / h. [3] The mass of AGV is less than that of its predecessors, which saves energy. AGV is 30% more economical than TGV. [four]
The prototype of the train was presented on February 5, 2008 in the presence of French President Nicolas Sarkozy . [four]
Content
Technical Features
When designing the AGV, a distributed-train electric train scheme was chosen, with the arrangement of motor trolleys under the floor of passenger cars. This became possible with the advent of powerful and at the same time compact synchronous motors with permanent rare earth magnets. Unlike the classic layout with head and end motor cars, there is no problem with limiting the maximum axle load, which in Europe is 17 tons.
At AGV, like at TGV, wheel trolleys are located not directly under the floor of the cars, but under the space between the cars. This approach allows us to solve a number of problems: improve vibration and acoustic comfort, increase safety and reduce the number of wheeled trolleys.
Synchronous electric motors and motor trolleys of the types used in the AGV were installed on the modified TGV Duplex , which successfully passed the Paris-Strasbourg route on April 3, 2007, developing a record speed of 574.8 km / h. The purpose of the experiment was not only setting a record, but also checking various systems and measuring aerodynamic, acoustic and vibration indicators, which was used to improve the characteristics of the developed AGV.
The nose profile is optimized to reduce aerodynamic drag. Passive safety force structures are also enclosed in the nose fairing, the inelastic deformation of which is capable of absorbing 4.5 MJ of energy in a collision. [five]
Users
The first customer was the Italian company Nuovo Trasporto Viaggiatori ( NTV ), the first privately owned operator of high-speed trains in Europe. According to the contract announced on January 17, 2008, 25 units of 11-car AGV trains should be delivered. [6] Commercial operation of the AGV began on April 28, 2012 on the Naples-Rome-Florence-Bologna-Milan line.
Air France-KLM is also considering entering the high-speed ground transportation market and plans to purchase or lease some AGV trains. [7]
Russian Railways OJSC in 2010 examined the possibility of purchasing 20 high-speed AGV trains manufactured by the French company Alstom for the Moscow - St. Petersburg route [8] [9] , but it was subsequently decided to abandon it.
Notes
- ↑ AGV - a new generation of high-speed electric train . Magazine "Railways of the world" (No. 10-2000). Date of treatment January 11, 2010. Archived on April 14, 2012.
- ↑ Alstom unveils AGV prototype train . Railway Gazette International (February 5, 2008). Archived on April 14, 2012.
- ↑ AGV: Performance and modularity . Alstom (October 2007). Date of treatment September 7, 2007. Archived April 14, 2012.
- ↑ 1 2 France unveils super-fast train . BBC News (February 5, 2008). Date of treatment February 5, 2008. Archived on April 14, 2012.
- ↑ Dmitry Mamontov. Overtaking planes: The fastest wheel-rail train in the world (September 2009). Date of treatment January 11, 2010. Archived on April 14, 2012.
- ↑ Alstom awarded Italian AGV contract . Railway Gazette International (January 17, 2008). Archived on April 14, 2012.
- ↑ 'An Airplane on Wheels': Air France Plans High-Speed Train Business (English) . Der Spiegel (09/09/08). Archived on April 14, 2012.
- ↑ Russian Railways plans to purchase another 20 high-speed trains
- ↑ From Moscow to St. Petersburg by train in 2 hours Archived on September 25, 2010.