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The development of rail transport in Russia.
The development of electric rolling stock in Russia began in 1930, when the first domestic electric locomotive VL19 DC current was released. The number 19 mean axle load. HVL is the initials of Vladimir Lenin. In 1950 he started the electrification of road ac. The first electric locomotive, intended for these roads is VL60. Passenger electric locomotives in Russia have not been done, they were purchased in Czechoslovakia and Riga. In 1975, the Riga Carriage Works started production of 14 electric train ER200 constant current with design speed of 200 km / h. Such electric, designed for passenger traffic on high-speed railways, now ply on the line St. Petersburg-Moscow. In recent years there has been the development of new electric rolling stock in Russia that meets modern requirements.? Since 1994, a number of railroads, electrified DC, suburban trains operated production Demikhov (ED2T) and Torzhok (ET2), car-building factories. And operated electric AC ED9T since 1996.? In 1997 Demikhovsky wagon factory started production of electric and ED4 ED4M. On the Tikhvin factory "Transmash" built the first electric train "Sokol", designed for speeds up to 250 km / h. Creating a new generation of electric EM4 "Sputnik" completed in 2003.? On the Novocherkassk Electric Locomotive Plant in two thousandth's started producing new electric series EP1, EP2, EP100 and EP300.? Now conducted research work on the creation of electric trains a new generation with asynchronous traction motors and pulse-controlled high-speed traffic.
Another promising system of electric rolling stock is a system of constant high voltage.
In this case, due to a higher voltage will be reduced losses in energy transmission, and in addition, no dc power quality problems that are on alternating current.
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