Ac electric locomotive pdf brian

Brian floca is the author and illustrator of locomotive, winner of the 20 caldecott medal. Brian flocas drawings for the book border on alltime spectacular here and there. Initially, 27 locomotives of this type had been planned, but by the early 1950s, the benefits of using the 25 kv ac system had been demonstrated, which meant. In his book, electric locomotives, historian brian solomon points out the first known use of a heavy rail electric locomotive took place in 1893 when general electric manufactured a small, 30ton machine featuring two axles.

This locomotive was built by metropolitanvickers, initially as a prototype gas turbineelectric locomotive, numbered 18100. Wheel slip control algorithm that compensates for wheel wear. The 1955 diesel locomotive classes are given in brackets where applicable a large number of different shunter types were purchased by british rail and its predecessors, many of which were withdrawn prior to the introduction of tops. The british rail class 87 is a type of electric locomotive built in 197375 by british rail engineering limited. Artistically, it isnt hard to see why locomotive won the 2014 randolph caldecott medal as the years most distinguished american picture book for children. Nov 06, 20 although they have come down in cost and also have become more reliable, the higher first cost of an ac locomotive vs the higher maintenance of a dc locomotive combined with the possibility of burning a dc locomotive out on a grade are an economic trade that the railroads have to make this trade was discussed at length on the other thread. The testing and commissioning was started during late 1996 and was carried out in phases during many sessions throughout 1997. This video is about discover motor stator manufacturing process china motor production.

Ac traction for locomotives is a major improvement over the old dc systems. The locomotive was a derivative of the swedish sj rc4 designed for passenger service in the united states. The ac locomotive group is the uks only dedicated ac electric locomotive preservation society. Watch this video if you want to know china electric motors manufacture process. Nov 27, 2003 i found this an excellent scource of information on the developement of the electric locomotive in north america. This give the ac locomotive an adhesion advantage over the dc locomotive.

Modern locomotives have electric motors connected to the drive axles. Ges ac44i locomotive is a heavyhaul locomotive specifically designed for the south american market. The advantage of ac motor in the train is explained. Locomotive for commuter and regional service in north america max. They represented the first coco type of overhead electric locomotive built for use in the united kingdom. Dieselelectric propulsion with alternating current ac traction motors lowest possible weight and unsprung mass streamlined design full width locomotive cab. Learn more about ac, dc, adhesion and traction in this good article here to make a diesel electric locomotive power system it takes mechanical, electrical and control engineers.

It currently has five ac locomotives in its care, numbers 81002, 82008, 83012, 85101, 89001. Sd70mac, sd70ace, sd80mac, sd9043mac, sd90mach, ac4400cw, es44ac, ac6000cw, yadda yadda yadda. Equipped with 16cylinder ge fdl 16 engine, the ac44i can deliver up to 4,500 hp while helping to keep fuel consumption and emissions to a minimum. Diesel or electrical multitension locomotive at least until the whole freight core. Designed for 125 mph operating speed as defined by 49cfr section 238. See also vol 5 high speed trains isbn 0711012970 for info on class 370 aptp. The design was based on that of the smaller class em1, which dated from 1941. These polyphase machines are powered from gto, igct or igbtbased inverters. Electric propulsion controls and accessories a 77 a torque. Abbs 6fxa 7059 3phase squirrel cage induction motors 1150kw, 2180v, 370450a, 15833147 rpm weight 2050kg. The electric motors receive electric power either from an onboard power source e. Large series of trains and locomotives fitted with abb traction equipment are in reliable. The reference text on which this subcourse is based is a broad presentation of locomotive structure and a basic outline of maintenance. The blended brake system described herein coordinates the concurrent application of both dynamic brakes and friction brakes on a locomotive.

A locomotive or engine is a rail transport vehicle that provides the motive power for a train. Johnson is with the university of idaho department of electrical. Rail american traction systems electric propulsion. Locomotive, by brian floca, is a caldecott book, which tells the story of a locomotives journey across the western frontier to the west coast. Electric locomotive classes ac indian railways fan club. Traction systems for locomotives and high speed applications. The tables below attempt to list the different types and the different classifications used to describe them as clearly as possible. Pdf analysis of the electric locomotives neutralsection passing.

Amtrak mechanical department bureau of rolling stock engineering. Dieselelectric locomotives introduction an understanding of the structure of a locomotive mechanically and electrically is essential to a person attempting to perform maintenance and repair services on it. The first commercial applications of electric traction were for suburban or metropolitan. Recommended practice for diesel electric passenger. In 1891, brown had demonstrated longdistance power transmission, using threephase ac, between a hydroelectric plant at lauffen am neckar and frankfurt am main west, a distance of 280 km. Newer electric locomotives use ac motorinverter drive systems that provide for regenerative braking. The hhp8 high horse power 8000 is an electric locomotive built by a consortium of bombardier transportation and alstom. Freight diesel electric locomotives iii5 table iii4 u. Sibert honor book and a new york times best illustrated book. Indias first 12,000 horsepower electric locomotive. A pantograph on each end of the locomotive body was used to collect the 11,000 v, 25 hz alternating current ac from the overhead lines. They use the same alco asymmetric trimount bogies as the successful wdm2 diesel class. Wam4 the problems with the wam1 series prompted ir to come up with better models, and after some variations, the wam4 model was produced, the first indigenously designed and built electric loco first units delivered by clw in 197071.

A year later it built another which utilized a pair of trucks and nosesuspended traction motors. On a dc locomotive, its voltage supplied to the motors, but those motors, with their coil windings, are big inductors, and. The unpowered 2 axles are at either end of the locomotive. A 2200v,50 hz, three phase,6 pole,yb connected squirrel cage induction motor has following parameters. With electric traction, the locomotives are powered by either an ac or dc voltage supply from. It is noteworthy that the 2es5 scythi an is russias first ac mainline freight electric locomotive with asynchronous traction motor. Compressed air is used to power the actuators of the trains control and braking systems. The primary customer was amtrak, which bought 54 for use on the northeast corridor and keystone corridor. February, 2005 4 lesson plan sn topic minutes technical aids 1. The body rested on the frame and was clad in welded steel plates. The locomotive was modified at electric loco works elw at bhusawal and was retrofitted with the converters and controller cubicles. The book also includes people who ride the train, but their characters are never developed. The wam1 was not only indias very first ac electric locomotive but also the great granddaddy of all indian ac electric locomotives except the threephase wap57 and wag9. Trains on electric traction have been running in india from as early as 1925, long before there was even one diesel locomotive in india, when railway lines of the mumbai region and its surroundings within the boundaries of virar, igatpuri and pune 380 km were electrified with 1500v direct current.

Merits of ac vs dc locomotives linkedin slideshare. The frame of the locomotive was in two halves joined with a ball and socket joint, allowing the locomotive to negotiate sharper curves. To begin, the story has a simple plot, which is made more interesting, as the main character is a locomotive. Trains on electric traction have been running in india from as early as 1925, long before there was even one diesel locomotive in india, when. The speed of an electric locomotive is regulated by varying the voltage at the traction motors and by altering their magnetic flux. We formed in 1996 and currently have five ac locomotives in our care, including britains oldest surviving ac loco, dating from 1960, through to the unique 1986 prototype class 89. A wag5 series locomotive loco number, 23026 was nominated for retrofitment. This is possible by using modern three phase ac technology. He has illustrated avis poppy stories, kate messners marty mcguire novels. The alltime guide to the uk traction classification system part 2.

Dieselelectric locomotive sd90mac with threephase drive the sd90macs are the perfect multipurpose locomotives providing high starting and continuous tractive efforts as well as high speeds. Electric locomotives do not have a conventional engine in them as we have seen in a diesel locomotive, but use the electricity. In operation the leading pantograph was usually kept lowered and the. Calculate ithe time taken and energy dissipated in the motor during starting.

The tractive effort of a locomotive whether ac or dc is defined by the equations. Integrated gate bipolar transistors, under the control of the microprocessor, turn the dc on the power bus back into ac at the frequency requested by the throttle setting. Although dieselelectric locomotives currently dominate freight and nonurban. It currently has five ac locomotives in its care, numbers 81002, 82008, 83012, 85101, 89001 history locomotives. Ac77 ac torque motor features mechanically compatible with the d77 motor, the a77 fits in same pedestal position in the locomotive truck bogie. What voltages do most locomotive systems operate at. Efforts to propel railroad vehicles using batteries date from 1835, but the first successful application of electric traction was in 1879, when an electric locomotive ran at an exhibition in berlin. They were the flagships of british rails electric locomotive fleet until the late 1980s, when the class 90s started to come on stream. List of british rail modern traction locomotive classes. As the throttle is advanced, the ac frequency is raised. An electric locomotive is a locomotive powered by electricity from overhead lines, a third rail or onboard energy storage such as a battery or a supercapacitor electric locomotives with onboard fueled prime movers, such as diesel engines or gas turbines, are classed as dieselelectric or gas turbineelectric and not as electric locomotives, because the electric generatormotor. The real challenge for ac electric railway traction technology to work in india was building locomotives for it as there never was any 25kv 50hz single phase ac traction.

An electric locomotive is a railway vehicle that can move along rails and push or pull a train attached to it using electric power drawn from an external source, usually from overhead cables or a third rail. The first practical ac electric locomotive was designed by charles brown, then working for oerlikon, zurich. The control system can do this almost instantaneously. French railways sncf develops other hybridlocomotive platform based on an old switcher locomotive class. The wheel controls motor power, not driving direction. The new locomo tive meets all reference requirements. Comments on the regional railroad network and power grid interconnection pdf. We are the uks only dedicated ac electric locomotive preservation society. May 14, 2018 why ac traction induction motor used in an electric train engine locomotive is explained in the video. See our videos below on each part of the diesel locomotive.

The hhp8s are currently used by operators amtrak, who have 15 units, and maryland area regional commuter system marc who have 6 units. Training package on power, auxiliary and control circuits of ac electric locomotives. Using experience he had gained while working for jean heilmann on. As a person with a technical background a more profound explanation of fonction would have been appreciated. While the computer technology and solidstate current control devices in ac dieselelectric locomotives are expensive, the first and second generation dc dieselelectric locomotives needed heat dissipating resistors and. Rectifier locomotives, which used ac power transmission and dc motors, were common, though dc commutators had problems both in starting and at low velocities.

People in india think of electric trains as a new, modern invention. Table iii2 older conventional vs genset switch locomotive specifications iii3 table iii3 comparison of tractive effort for u. Good background information on brs electric locomotive fleet from sr booster locos through to class 87. Electrical locomotive article about electrical locomotive. The control for power on an ac locomotive is the frequency of the switching of the inverter. The diesel prime mover would turn a generator which created an ac volt. Indeed is it well known that smes are under development and are very expensive devices. Why ac traction induction motor used in an electric train enginelocomotive is explained in the video. Pdf modernization of dieselelectric locomotive 2m62 and. Other articles where electric locomotive is discussed.

Locomotive kindle edition by floca, brian, floca, brian. Diesel electric locomotives introduction an understanding of the structure of a locomotive mechanically and electrically is essential to a person attempting to perform maintenance and repair services on it. Pti the first locomotive, being rolled out today, april 10, will be followed by four more in the current fiscal in 20192020, the facility will. Description of power and auxiliary circuit of wap1 locomotive a. This locomotive was built by metropolitanvickers, initially as a prototype gas turbine electric locomotive, numbered 18100. Electric locomotive a locomotive driven by traction motors that may receive their power from a contact system or. Pdf in this paper, the existing traction technologies used to propel locomotives. Modernization of diesel electric locomotive 2m62 and tep70 locomotives with respect to electrical subsystem article pdf available in procedia engineering 187. Recommended practice for diesel electric passenger locomotive blended brake control 1. Operates at or near break down torque of the motor across the entire speed range. Steves railroad pages, information on dieselelectric.

An electric locomotive is a locomotive powered by electricity from overhead lines, a third rail or. When an ac locomotive is pulling hard, you will hear the drive wheels constantly chirp as they loose and regain traction. Amtrak mechanical department bureau of rolling stock. An electric locomotive is a locomotive powered by electricity from overhead lines, a third rail or onboard energy storage such as a battery or a supercapacitor electric locomotives with onboard fueled prime movers, such as diesel engines or gas turbines, are classed as diesel electric or gas turbine electric and not as electric locomotives, because the electric generatormotor combination. In a locomotive, the diesel turns an ac generator, this ac is rectified by diodes to a pure dc power bus. The primary advantages of ac traction are adhesion levels up to 100% greater than dc and much higher reliability and reduced maintenance requirements of ac traction motors. The pneumatic equipment of an electric locomotive includes a compressor, compressedair reservoirs, and the braking equipment.

British rail allocated the number e and later e2001 to the locomotive following its conversion from gas turbine propulsion. Recommended practice for diesel electric passenger locomotive. Thirtysix of these locomotives were built to work passenger services over the west coast main line wcml. The ghaziabad shed may be planning to retrofit some of its other wap5 locos with airconditioning. Using a superconducting magnetic energy storage coil to improve.

The locomotive is supported on the wheel through bogiebolster and suspension system. Class 80 was the tops classification allocated by british rail to the prototype 25 kv ac electric locomotive. Ac versus dc power trains magazine trains news wire. An overview is provided from introduction of the technology to the present day utiliisation of this form of traction. Dieselelectric locomotive sd90mac with threephase drive. Until recently the traction system had two voltages. Why is ac motor used in electric train engine nowadays. Ac 77 ac torque motor features mechanically compatible with the d77 motor, the a77 fits in same pedestal position in the locomotive truck bogie. Electric multiple units and locomotives manufacturer.

Abbreviation of locations and equipment of wap1 locomotive 60 ohp, wall chart 2. The locomotive is a collection of technologies prevailing and developed exclusively for the purpose or modified to the existing one. Softronic proudly continues the citys tradition in the locomotive manufacture, our top engineers coming from the former electroputere plant where over 3000 electric and diesel electric locomotives were built. The adjustable speed drives of this locomotive use pwmcontrolled converters both to rectify the voltage of the ac supply system and to feed ac. Why is ac motor used in electric train engine nowadays youtube.