Ac77 ac torque motor features mechanically compatible with the d77 motor, the a77 fits in same pedestal position in the locomotive truck bogie. Operation analysis of ac traction motors in terms of electromagnetic. Vector control using asynchronous traction motor in the diesel electric locomotive th eoretical aspects. Th e quality of the parameters of atm speed and torque control is determined by the. Electric traction has many advantages as compared to other nonelectrical systems of traction including steam traction. The power to weight ratio of threephase traction motor is much higher than the dc motor 1500 kw per axle can be packed with these motors. The drive which uses the electric power for moving forward, such type of drive is called an electric traction drive. So if have necessity to load pdf ge 752 traction motor manual, in that case you come on to the faithful website. Nov 09, 2017 anything between one huge one on early locos with connecting rods this is obviously the case to one per driven axle. Abbs locomotive motors with welded stator frame cover the whole range of freight, passenger and multipurpose locomotives. For traction purposes mostly 3phase induction motors and d. New conditions have set new standards in railway travel. 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. Diesel locomotives never reached the speeds of electric locomotives.
Alco 380hp, 44ton diesel electric railroad locomotive 10 section 2 how to operate the locomotive general operating rules 1. Abb is the expert for traction converters, motors, transformers, and complete traction chain solutions. Electric propulsion controls and accessories a 77 a torque. It is used for local delivery of good in large towns with maximum daily run of 50 to 60 km. Do not operate locomotive at higher speeds, either on its own power, coasting down grade, or being towed. This project is to design, build and test a prototype locomotive traction motor based on a new electric machine technology defined as a permanent magnet direct. The armature core is made from high permeability silicon steel stampings and these stampings are separated by thin coating of varnish as insulation with each other. A traction motor is used to make rotation torque on a machine. How do traction motors work in electric locomotives. Permanent magnet dc traction motor with reconfigurable winding. Electric traction motor the traction motor is suitable for a range of vehicle applications, from medium size passenger cars to light duty commercial vehicles.
Dieselelectric locomotive sd90mac with threephase drive. This control unit processes the commands coming from the driver or trainlines to form the reference values for. Review of characteristics of different types of dc and ac motors used traction and their suitability moduleiv 10 hours rating and heating of electric drives, power loss, heating and cooling of motors, classes and duty and selection of motors, drives for specific application like steel, paper, textile mills. The limitations of the torque of the traction motor when powered by. A traction motor is an electric motor used for propulsion of a vehicle, such as locomotives, electric or hydrogen vehicles, elevators or electric multiple unit traction motors are used in electrically powered rail vehicles electric multiple units and other electric vehicles including electric milk floats, elevators, roller coasters, conveyors, and trolleybuses, as well as vehicles with. Traction motors are used in electrically powered rail vehicles such as electric multiple units and electric locomotives. Traction motor is the most important part of a locomotive. Such a direct driving system means that the electric motor develops a high torque. Massachusetts institute of technology 1 introduction this is a concept paper in response to the foa entitled rare earth alternatives in critical technologies for energy react. Feb 05, 2018 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. Modern locomotives have electric motors connected to the drive axles. Sensorised hybrid tmbu traction motor bearing unit equipped with ceramic balls, the incremental sensor detects absolute positioning for electric control devices, direction of rotation, speed for brake control systems and temperature to monitor reliability.
They are also used in electric vehicles, such as electric. 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 generator motor combination. Review of characteristics of different types of dc and ac motors used traction and their suitability moduleiv 10 hours rating and heating of electric drives, power loss, heating and cooling of motors, classes and duty and selection of motors, drives for. The solid rail application experience combined with extensive development resources allows abb to design stateoftheart generators, renowned for their reliability and energy efficiency, enabling customers to build modern ultralight locomotives for the demanding highspeed rail. Traditionally each traction motor was custom made to fit a specific vehicle.
There is one electric motor in each bogie, each driving 3 sets of driven wheels via connecting rods. This is exemplified in the rapid development of electric suburban train services for the new built up areas spreading in all directions round large cities. Traction inverter locomotive and traction control the control system of the entire locomotive is based on microcomputer technology. Traction motors in diesel locomotives ee publishers. The determination of the asynchronous traction motor. What is an electric locomotive systems and their types in india.
As we all know, it is electric locomoti ves that are at the forefr ont of railway traction, while the diesel locomotive is kept for some very specific uses. Pdf this paper deals with a new technical design for a trambogie with direct. Diesel electric locomotive sd90mac with threephase drive the sd90macs are the perfect multipurpose locomotives providing high. Some of the technical discussion is based on work that has been reported in a conference publication1. Adding further to your knowledge, there are two types of motor with used in electric traction in india i. A traction motor is an electric motor used for propulsion of a vehicle, such as locomotives, electric or hydrogen vehicles, elevators or electric multiple unit. The gm locomotive models are gt46 mac for goods service and gt46 pac for passengers service. Electric traction is meant for locomotion in which the driving tractive force is obtained from electric motors called as traction motors. To enable the locomotive to perform this task, it is equipped with suitable equipments, which enable loco pilot to. Oct 29, 2011 an electric locomotive as well as diesel electric locomotive in indian railway contain six dc traction motors at once. One of the major application of an electric drive is to transport men and materials from one place to another. Traction generators traction motors and generators abb. Traction systems for locomotives and high speed applications.
It offers several benefits over other systems, including quick start and stop, very efficient, pollutionfree, easy to handle and easy speed control. In deep and trustful partnerships with vehicle builders, refurbishers, and rail operators, we supply stateoftheart traction systems. The locomotive has a modular construction allowing, through a mere adaptation of the existing platform, to offer solutions customised to the specific needs of operators such as multiple voltage locomotives 3 kv dc25 kv ac15 kv ac, or electric locomotives equipped with. Dec 31, 20 the traction power systems is said to be receptive if a train or locomotive can use regenerative braking. Three phase induction motor as traction motor by mahesh kumar jain on may 12, 20 right from the introduction of electric traction, there was a strong desire to use three phases induction motor for traction application. This handbook on maintenance of traction motor cooling blower and its motor has been prepared by camtech with the objective of. Traction motor 1tb2830 the fourpole squirrelcage threephase induction motor is designed specifically for use on locomotives with heavy axle loads. This inevitably resulted in long lead times to accommodate the design, engineering, productspecific supply chain logistics, quality assurance and the cre. We own ge 752 traction motor manual pdf, doc, djvu, txt, epub formats. 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. Completion of traction motor and controller for the japan. If you find any mistakes, or if you know of a way to improve the procedures, please let us know.
Nov 30, 2015 the electric traction system is the most efficient of all other traction system such as steam and internal combustion ic engine type systems. Three phase induction motor as traction motor railelectrica. These allowed the gg1 to be run in either direction without the timeconsuming turning operation required by a steam locomotive. By electric traction is meant locomotion in which the driving or tractive force is obtained from electric motors. The electric locomotive and electric motor coach may be regarded as natural developments that have followed steam traction. The electric locomotive draws power from the over head equipment ohe with the help of pantograph and converts this electrical energy to mechanical energy, in controlled manner, through traction motors which drive the axles. Pdf directdrive induction motor for railway traction applications. Elrsstrpf ah0009 schedule of technical requirements for premachined forged armature head for tao659 traction motors of electric locomotives. Working of threephase locomotive 25 kv overhead ac supply is stepped down with the main transformer in the locomotive and fed to a front end line twin 4quadrant line converter where ac is converted to.
It is used in electric trains, tramcars, trolley buses and diesel electric vehicles etc. The reference text on which this subcourse is based is a broad presentation of locomotive structure and a basic outline of maintenance. The use of a diesel engine frees the locomotive from being coupled to an external electricity supply, and the use of electric motors and drives allows control over the traction capabilities of the locomotive which would not be possible with a direct drive from the diesel engine. Direct drive system for future high speed train, proceedings icem 2002.
Traction motor simple english wikipedia, the free encyclopedia. Regeneration in electric locomotives with dc traction motors. Abb traction motors for locomotive traction motors. It comprises a sibas 16 traction control unit for each inverter and a locomotive control unit. Steves railroad pages, information on dieselelectric. The evaluation of electric motor design and electrification technologies have not only led to the design of highspeed locomotives metros and suburban railways, but also have raised the overall energy efficiency. Electric locomotive in hindi electric traction youtube. The final decade of the 20 th century and the first decade of the 21 st century were marked by the enormous rise in high speed due to the huge leaps forward in electric locomotive technology. Electric traction 1701 however, the steam locomotive suffers from the following disadvantages. The gm locomotive is equipped with a microprocessor based computer control system referred to as em 2000 locomotive.
The cabs central location protected the crew in case of a collision. The electric motors receive electric power either from an onboard power source e. Abb is a leading independent traction generator and motor supplier with iris certified production facilities. Elrsstrcb 0010 schedule of technical requirements for carbon brush manufacturers sept. Multiple drive systems per vehicle can be supported due to the safety case and levels of torque integrity employed. Abb is the expert for traction converters, motors, transformers. We tailor every motor according to specification with regard to e. If there are no other trains in the section that can absorb the power and if the substation is not designed to back feed into the supply grid, regenerative braking results in rise of ohe voltage rising above a predetermined limit, whereby the train control system detects the non. As explain by aniruddha, traction motors work like any other electric motor. How many traction motors are used in an electric locomotive.
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