|
Blended Brake
Dynamic braking is the use of an electric traction motor as a Electric generator, generator when slowing a vehicle such as an electric locomotive, electric or diesel locomotive, diesel-electric locomotive. It is termed "Resistor#Adjustable resistors, rheostatic" if the generated electrical power is dissipated as heat in brake grid resistors, and "regenerative brake, regenerative" if the power is returned to the supply line. Dynamic braking reduces wear on friction-based braking components, and regeneration lowers net energy consumption. Dynamic braking may also be used on railcars with multiple units, light rail vehicles, tram, electric trams, trolleybuses, and electric automobile, electric and hybrid electric automobiles. Principle of operation Converting electrical energy to the mechanical energy of a rotating shaft (electric motor) is the inverse of converting the mechanical energy of a rotating shaft to electrical energy (electric generator). Both are accomplished through th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Armature (electrical)
In electrical engineering, the armature is the winding (or set of windings) of an electric machine which carries alternating current. The armature windings conduct AC even on DC machines, due to the commutator action (which periodically reverses current direction) or due to electronic commutation, as in brushless DC motors. The armature can be on either the rotor (rotating part) or the stator (stationary part), depending on the type of electric machine. The armature windings interact with the magnetic field (magnetic flux) in the air-gap; the magnetic field is generated either by permanent magnets, or electromagnets formed by a conducting coil. The armature must carry current, so it is always a conductor or a conductive coil, oriented normal to both the field and to the direction of motion, torque (rotating machine), or force (linear machine). The armature's role is twofold. The first is to carry current across the field, thus creating shaft torque in a rotating machine or f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ALP-46
The Bombardier ALP-46 is an electric locomotive built in Germany by Bombardier Transportation, Bombardier between 2001 and 2002 for use in the United States. It is derived from the German DBAG Class 101, Class 101. New Jersey Transit (NJT) is the only railroad to operate this locomotive model, which is used across the electrified NJT system, specifically on the Northeast Corridor Line, Northeast Corridor, North Jersey Coast Line, North Jersey Coast, Morris & Essex Lines, Morris & Essex, and Montclair-Boonton Line, Montclair-Boonton lines. These locomotives replaced the ALP-44 locomotives, which were all retired by 2012. Orders and delivery NJT ordered 29 locomotives: the first 24 ALP-46 locomotives in December 1999 and an additional five locomotives in September 2001. They were built by Bombardier (formerly ADtranz) at their Kassel, Germany plant. The first two locomotives were built as preseries locomotives for testing—4600 was tested on the TTCI test plant in Pueblo, Colorado ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Head-end Power
In rail transport, head-end power (HEP), also known as electric train supply (ETS), is the electrical power distribution system on a passenger train. The power source, usually a locomotive (or a generator car) at the front or 'head' of a train, provides the electricity used for heating, lighting, electrical and other 'hotel' needs. The maritime equivalent is hotel electric power. A successful attempt by the London, Brighton and South Coast Railway in October 1881 to light the passenger cars on the London to Brighton route heralded the beginning of using electricity to light trains in the world. History Oil lamps were introduced in 1842 to light trains. Economics drove the Lancashire and Yorkshire Railway to replace oil with coal gas lighting in 1870, but a gas cylinder explosion on the train led them to abandon the experiment. Oil-gas lighting was introduced in late 1870. Electrical lighting was introduced in October 1881 by using twelve Swan carbon filament incandescent lamps c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inverter (electrical)
A power inverter, inverter or invertor is a power electronic device or circuitry that changes direct current (DC) to alternating current (AC). The resulting AC frequency obtained depends on the particular device employed. Inverters do the opposite of rectifiers which were originally large electromechanical devices converting AC to DC. The input voltage, output voltage and frequency, and overall power handling depend on the design of the specific device or circuitry. The inverter does not produce any power; the power is provided by the DC source. A power inverter can be entirely electronic or may be a combination of mechanical effects (such as a rotary apparatus) and electronic circuitry. Static inverters do not use moving parts in the conversion process. Power inverters are primarily used in electrical power applications where high currents and voltages are present; circuits that perform the same function for electronic signals, which usually have very low currents and vol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Union Pacific Railroad
The Union Pacific Railroad , legally Union Pacific Railroad Company and often called simply Union Pacific, is a freight-hauling railroad that operates 8,300 locomotives over routes in 23 U.S. states west of Chicago and New Orleans. Union Pacific is the second largest railroad in the United States after BNSF, with which it shares a duopoly on transcontinental freight rail lines in the Western, Midwestern and Southern United States. Founded in 1862, the original Union Pacific Rail Road was part of the first transcontinental railroad project, later known as the Overland Route. Over the next century, UP absorbed the Missouri Pacific Railroad, the Chicago and North Western Transportation Company, the Western Pacific Railroad, the Missouri–Kansas–Texas Railroad and the Chicago, Rock Island and Pacific Railroad. In 1996, the Union Pacific merged with Southern Pacific Transportation Company, itself a giant system that was absorbed by the Denver and Rio Grande Western Railroad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kansas City Southern Railway
The Kansas City Southern Railway Company is an American Class I railroad. Founded in 1887, it operates in 10 midwestern and southeastern U.S. states: Illinois, Missouri, Kansas, Oklahoma, Arkansas, Tennessee, Alabama, Mississippi, Louisiana and Texas. KCS hauls freight for seven major government and business sectors: agriculture and minerals, military, automotive, chemical and petroleum, energy, industrial and consumer products and intermodal. KCS has the shortest north-south rail route between Kansas City, Missouri, and several key ports along the Gulf of Mexico in Alabama, Louisiana, Mississippi and Texas. The KCS, along with the Union Pacific railroad, is one of only two Class I railroads based in the United States that has not originated as the result of a merger between previously separate companies. The company owns or contracts with intermodal facilities along its rail network in Kansas City, Mo; Jackson, Miss.; Wylie, Texas; Kendleton, Texas; and Laredo, Texas. KCS ope ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
