Ac electric locomotive pdf

After indian railways switched over to 25kv alternating current traction all over its network rendering dc traction and dc and acdc locomotives obsolete, ac electric locomotives are currently the reigning superstars of indian railways. This 270,000pound 122,470kg locomotive is designed to tow passengertrain cars at speeds of. On electric brake, a reverse conversion is operated. Thegeneralconstructionofelectricminelo comotives,pp. The new locomotive will use a battery cell similar to what you might find under the hood of an electric car. A wag5 series locomotive loco number, 23026 was nominated for retrofitment. In conventional locomotives, 25kv, single phase, ac supply is collected by a roofmounted pantograph from the ohe and is stepped down by a transformer inside the locomotive. In terms of scale and packaging, however, this train battery is a different animal, peters says.

This, however, has been dogged by controversy over costs and fitment, and the first units made by clw do not have airconditioned cabs. Training package on transformer of ac electric locomotive january, 2006 chapter 1 general 1. Comments on the regional railroad network and power grid interconnection pdf. Electric propulsion controls and accessories a 77 a torque. Large series of trains and locomotives fitted with abb traction equipment. Diesel electric locomotive sd90mac with threephase drive the sd90macs are the perfect multipurpose locomotives providing high starting and continuous tractive efforts as well as high speeds. A speed control system for an ac electric locomotive of the type having a plurality of wheelaxle sets with each wheelaxle set being coupled to an independently controllable ac electric traction motor and each motor having a corresponding speed sensor, each speed sensor providing a pair of signals which are resolvable to determine the speed and direction of rotation of the associated motor. 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.

The focus is primarily on ac locomotivesthose with ac inverters and traction motorsbut much of the discussion also applies to dc locomotives. The locomotive was modified at electric loco works elw at bhusawal and was retrofitted with the converters and controller cubicles. 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. Using experience he had gained while working for jean heilmann on steamelectric locomotive. This supply is then converted to dc supply by a full wave silicon rectifier and associated smoothing filter. 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.

E68000 electric locomotives at a certain slope value. Study on bogie and suspension system of an electric locomotive. Historyanddevelopmentoftheelectricmine locomotive,pp. 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. Diesel electric locomotive for ktmb air conditioning system electric train equipment for thai purple line scottconnected transformers for western dedicated freight corridor the information contained herein is as of september 1, 2019. Pdf modernization of dieselelectric locomotive 2m62 and. 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. Other articles where electric locomotive is discussed. People in india think of electric trains as a new, modern invention. What is an electric locomotive systems and their types in india. Microprocessorbased traction control system for 25 kv ac. Dm 30 ac for long island rail road lirr, new york, usa.

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. At the upper end the frame is screwed to the cover of the. The major disadvantage of the electric locomotive engine compared to the diesel locomotive engine is the requirement for power supply in the form of overhead electric lines. Traction systems for locomotives and high speed applications.

Calculate ithe time taken and energy dissipated in the motor during starting. Typical acdc dieselelectric locomotive tep70 automatic. The tractive effort of a locomotive whether ac or dc is defined by the equations. Wap7 locomotive has two separate sets of power conversion and distribution, the video shows both trucks separate component placement. The information contained herein is subject to change without notice. This is possible by using modern three phase ac technology. A pressure reducing valve, a three way cock and a pressure gauge to read between 0 and 10 kg. Another locomotive for heavy freight trains, also operating as double section under arctic conditions is the traxx locomotive of gauge 1,520 mm, the only modern multisystem freight locomotive of this gauge. The first option is to use the new electric tracks which must be powered by either an electric feeder unit or running electric shunting wire underneath the electric tracks.

Training package on transformer of ac electric locomotive january, 2006 8 chapter 2 construction 2. Electric locomotive classes ac indian railways fan club. The hybrid diesel locomotive is an incredible display of power and ingenuity. Merits of ac vs dc locomotives linkedin slideshare. Sd70mac, sd70ace, sd80mac, sd9043mac, sd90mach, ac4400cw, es44ac, ac6000cw, yadda yadda yadda. Feb 05, 2017 an electric locomotive is essentially a box full of transformers and semiconductors that converts electricity collected from external sources to the desired voltage to drive the traction motors. The speed of an electric locomotive is regulated by varying the voltage at the traction motors and by altering their magnetic flux.

Compressed air is used for the locos own air brake system as also for the train brakes, for raising the pantograph, for operating the power switchgear inside the loco such as the power contactors, changeover switches, windscreen wipers, sanders, etc. The general electric es44ac or simply, gevo is a energyefficient, 4,400 hp locomotive which was first introduced into full production in 2005, with the first es44ac prototype built in november 2002. Until then all long distance trains out of mumbai towards ahmedabad were hauled by steam or diesel. The testing and commissioning was started during late 1996 and was carried out in phases during many sessions throughout 1997. 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. Ac77 ac torque motor features mechanically compatible with the d77 motor, the a77 fits in same pedestal position in the locomotive truck bogie. The es44ac is the direct successor of the ac4400cw, which could not be produced domestically after 2004. If you find any mistakes, or if you know of a way to improve the procedures, please let us know. Modernization of dieselelectric locomotive 2m62 and tep70 locomotives with respect to electrical subsystem article pdf available in procedia engineering 187. Maintenance handbook on tap changer of ac electric locomotives march,2002 10 1.

Modern diesel electric locomotives are mostly propelled by ac motors, in general three phase induction motors. The diesel version has been replaced in 2018 by a dual mode locomotive which is powered by electricity on electrified sections of the track and can be. The function of an electric locomotive is to convert electric energy on mechanic energy. The first practical ac electric locomotive was designed by charles brown, then working for oerlikon, zurich. Cd class 263 is an electric locomotive that can run on ac electrified tracks that was built by skoda for czech railways. The various components of this system include overhead contact wire, circuit breakers, pantograph, transformer, three phase traction motor, rectifier, inverter, smoothing reactor, etc. Ac motors can be designed for higher maximum speeds, thus a smaller torque and volume for a given power rating. They are the fastest and most powerful among all locomotives in india, hauling most of irs crack and premier trains. 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. They first entered service in 1984 and have been only recently withdrawn. The frame is fixed to the bottom of the tank by means of 4 bolts inserted into 4 threaded plates. Pdf most efficient use of two types of electric locomotives for.

The present edition of troubleshooting directory is prepared in such a way to make it userfriendly and also to. The first commercial applications of electric traction were for suburban or metropolitan. Two dieselelectric locomotive energy systems work n. Electrical locomotive article about electrical locomotive. The track electrification refers to the type of source supply system that is used while powering the electric locomotive systems.

The original design called for these locos to have airconditioned cabs. Dwarka prasad principal liet polytechnic alwar submitted by subhash kumar b. 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. Pdf on dec 7, 2017, mine sertsoz and others published most efficient use of two types of electric locomotives for load transportation. Us5629567a speed control system for an ac locomotive. What is an electric locomotive systems and their types in. The vectron is a locomotive series made by siemens mobility, introduced at the 2010 innotrans trade fair in four prototype versions. Alco 380hp, 44ton dieselelectric railroad locomotive, side view 1. Ac traction for locomotives is a major improvement over the old dc systems. In a study conducted by teri, electric traction is found to be about three times more energy efficient than diesel traction.

A 2200v,50 hz, three phase,6 pole,yb connected squirrel cage induction motor has following parameters. Pdf modernization of dieselelectric locomotive 2m62 and tep. They use the same alco asymmetric trimount bogies as the successful wdm2 diesel class. Maintenance handbook on tap changer of ac electric locomotive. Dec 16, 2007 in a locomotive, the diesel turns an ac generator, this ac is rectified by diodes to a pure dc power bus. Electric locomotive a locomotive driven by traction motors that may receive their power from a contact system or.

As the throttle is advanced, the ac frequency is raised. 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. Introduction an electric locomotive is a locomotive powered by electricity from overhead lines, a third rail or onboard energy storage such as a battery or. Pdf on dec 7, 2017, mine sertsoz and others published most efficient use of two. Selecting the type of electrification depends on several factors like availability of supply, type of an application area, or on the services like urban, suburban and main. May 25, 2018 wap7 machine room components of 6120 hp electric locomotive. Training package on earth fault relays of ac electric locomotives march, 2006 3 chapter no. Compressed air is used to power the actuators of the trains control and braking systems. We have even had some experience in supplying a whole electric locomotive as. It combines some great mechanical technology, including a huge, 12cylinder, twostroke diesel engine, with some heavy duty electric motors and generators, throwing in a little bit of computer technology for good measure.

Nov 30, 2015 main parts of ac electric locomotive the figure below shows the block diagram of an ac locomotive system that employs single phase supply to drive three phase motor. This system consists of a sound board dimensions 3. This locomotive also works with the detector block made from infernal brick than can pick up on this aesthetic feature. 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. The sound system may be limited to larger gauge models and may. The traxx locomotive for africa is specifically designed for the south africa gauge of 1,065 mm. An electric locomotive is a locomotive powered by electricity from overhead lines, a third rail or.

The reference text on which this subcourse is based is a broad presentation of locomotive structure and a basic outline of maintenance. The capital cost of laying 5 to 6 kilometers of traction wires is equivalent to the cost of a new diesel locomotive. It is a lithiumion energy storage unit with cells that contain a combination of nickel, manganese and cobalt. We are the uks only dedicated ac electric locomotive preservation society. This supply is then converted to dc supply by a full wave silicon rectifier and associated smoothing filter before being fed to the traction motors. Electric traction 1701 however, the steam locomotive suffers from the following disadvantages. 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. Other auxiliaries air compressors mcp 1, mcp2, mcp3 electric locos need compressed at a pressure ranging from 6 kgcm 2 to 10 kgcm 2. Newer electric locomotives use ac motorinverter drive systems that provide for regenerative braking. In 1891, brown had demonstrated longdistance power transmission, using threephase ac, between a hydro electric plant at lauffen am neckar and frankfurt am main west, a distance of 280 km.