However, adoption of the electric drive by industry was delayed for lack of a reliable source of electric energy. Electric traction will continue to play a dominant role in the railway since it is an. Different poles are used in different applications. Free download a course in electrical power system by j. The control equipment is provided for manual and automatic. Welcome to my own course for electric traction in this course we are going to discuss the advantages and disadvantages of electric traction system including the dc traction and ac traction.
Hybrid electrical vehicles introduction a hybrid electric vehicle hev has two types of energy storage units, electricity and fuel. 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. Classification of electrical drives or types of electrical. Ieee std 1122004, ieee standard test procedure for. Mar 01, 2015 unit iv electric traction basic concepts of electric traction, requirements of an ideal traction system, supply systems,mechanics of train movement, traction motors and control, multiple units, braking, current collection systems, recent trends in electric traction. The word traction is a derivative of the latin word tractico, which means a process of drawing or pulling, and various forms of spinal traction have been described, since the time of hippocrates, for the. Lumbar traction is the process of applying a stretching force to the lumbar vertebrae through body weight, weights, andor pulleys to distract individual joints of the lumbar spine. In the second category comes a diesel engine electric drive. 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. Electric drive article about electric drive by the free.
Electric traction transformer market insights, forecast to 2025 electric traction transformer market size value, production and consumption, splits the breakdown data status 202018 and forecast to 2025, by manufacturers, region, type and application. The electric traction system ppt briefly discusses the types, supply system, traction motors, braking system, advantages and disadvantages and recent trends. It is used in electric trains, tramcars, trolley buses and dieselelectric vehicles etc. Utilization of electrical energy pdf free download uee notes uee pdf notes utilization of electrical power including electric drives and electric traction by n. However, the roped elevator design remains as the most popular. The seminar report explains the electric traction system which is the most efficient of all other traction systems. The following are the two types of non electric traction systems. There are many other voltage systems used for railway electrification systems around the world, and the list of current systems for electric rail traction covers both standard voltage and nonstandard voltage systems. For mid and highrise buildings, traction or cabledriven type of. Feb 28, 2017 electric traction means by means of the electric power for traction system i. Jan 08, 2019 electric traction means using the electric power for traction system i. Basic notions for the study of electric traction systems 17.
Pdf electrical vehicles practical solutions for power. Fundamentals of electric traction for electrical engineering. Utilization of electrical energy pdf notes uee pdf notes. Generally, a drive system is basically has a mechanical load, a transmission system and a prime mover.
Thomas davenport, in brandon, vermont, erected a circular model railroad on which ran batterypowered locomotives or locomotives running on batterypowered rails in 1834. Power electronic converters are used everywhere in normal daily routines at home, commercial workplaces or in an industrial environment. The track electrification refers to the type of source supply system that is used while powering the electric locomotive systems. Traction motors are used in electrically powered rail vehicles such as electric multiple units and electric locomotives. The traction system that doesnt use electricity at any stage of a vehicle movement is referred to as a nonelectric traction system. Non electric traction systemmechanical traction system. Electric traction basic, traction types, advantages, control for traction. Electricity is used to drive the electric locomotives. Two types of vehicles are used for electric traction. Traction will teach you the nineteen channels you can use to build a customer base, and how. Pdf on mar 15, 2015, igor bolvashenkov and others published the preliminary choice of electric. Due to the high power handling with higher efficiencies, these converters become an integral part of industrial electric drives, high electric power supplies, electric traction systems and automobile control equipments. Utilization of electrical energy notes pdf uee notes pdf book starts with the topics covering type of electric drives, choice of motor, starting and running characteristics, speed control, temperature rise, particular applications of electric drives, types of industrial loads, continuous, intermittent and variable loads, load qualization, etc.
There are three main types of elevators commonly used. Some people would suggest that the electrical hazard of shock and fire caused by electricity is an issue. It is more efficient compared to the nonelectric system and offers several benefits also such as quick start and stop, pollution free, and easy to handle. The electric or counterweight elevator is a widely used system. It is free from smoke and flue gasses maintenance cost. Electricity means that a battery sometimes assisted by ultracaps is used to store the energy, and that an electromotor from now on called motor will be used as traction motor. Pdf types of power quality disturbances on ac electric traction. Mar 06, 20 the electric or counterweight elevator is a widely used system. Introduction, requirements of an ideal traction, systems of traction, speed.
In an electric traction system the driving force to pull a train is generated by the traction motors. One of the major application of an electric drive is to transport men and materials from one place to another. May 22, 2018 the electric traction system ppt briefly discusses the types, supply system, traction motors, braking system, advantages and disadvantages and recent trends. Electric railways use either electric locomotives hauling passengers or freight in separate cars or electric multiple units passenger cars with their own motors. Regenerative drive system in elevator is a remarkable advancement in these energy efficient elevators. Electric traction system requirements, terms, advantages.
This book will useful to most of the students who were studying electrical and electronic engineering. Traction applications have traditionally been jobs for lead acid batteries but the limitations of lead acid batteries, together with the high cost of alternatives, have in turn limited the range of potential battery powered traction applications. Methods of electrialc heating resistance, arc, induction and dielectric heating. Electrical vehicles practical solutions for power traction motor systems article pdf available in ieee transactions on industry applications pp99. These drives are dc scr thyristor, ac inverter vvvf and ac vector. The classification of electrical drives can be done depending upon the various components of the drive system.
Systems of railway electrification presently, following four types of track. All heating requirements in domestic purposes such as cooking, room heater, immersion water heaters, and electric toasters and also in industrial. Zimmer traction handbook a complete reference guide to the basics of traction. The electric traction system can be broadly divided into two groups. It is used in electric trains, tramcars, trolley buses and diesel electric vehicles etc. First of all we can classify the term braking in two parts. The system which use electrical power for traction system i. Hydraulic elevators are supported by a piston at the bottom of the elevator that pushes the elevator up as an electric motor forces oil or another. Isbn 07389785 ss95211 no part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher. A 2200v,50 hz, three phase,6 pole,yb connected squirrel cage induction motor has following parameters. Mar 19, 2015 traction means drawing or pulling something over a surface. Electric traction motor market by component hardware. Railway electrification as a means of traction emerged at the end of the nineteenth century, although experiments in electric rail have been traced back to the midnineteenth century.
Traction means drawing or pulling something over a surface. Electric traction has many advantages as compared to other nonelectrical systems of traction including steam traction. Steam engine drive based vehicles used for railways internal combustion ic engine drive based vehicles used for road transport electric traction system. Working of drum brakes drum brakes work on the same principle as the disc brakes. Traction motors in diesel locomotives ee publishers. By electric traction is meant locomotion in which the driving or tractive force is obtained from electric motors. Iakobi tested a dc electric motor supplied from a storage battery and used it to drive a screw propeller on a boat.
Battery requirements for typical traction applications. Different types of poles are used in different places. We know that brake is an equipment to reduce the speed of any moving or rotating equipment, like vehicles, locomotives. Electric traction involves the use of electricity at some stage or all the stages of locomotive movement. Advantages of electric traction transport due to their pollutionfree locomotion as. List the advantages and disadvantages of electric traction. Which of the following is an advantage of electric traction over other methods of traction. 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. Act of drawing or being drawn is known as traction. 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.
Suryanarayana, new age international p limited, publishers, 1996. Electric motors and drives fundamentals, types and applications third edition austin hughes senior fellow, school of electronic and electrical engineering, university of leeds amsterdam boston heidelberg london new york oxford paris san diego san francisco singapore sydney tokyo newnes is an imprint of. The first electric drive was devised in russia in 1838, when b. Adequate supplies of feed water at regular intervals are required. Electric traction b disadvantages because of difficulty of installing a condenser on a locomotive, the steam engines employed are of noncondensing type, therefore, efficiency is very poor 6 to 8%. Ppt electric traction powerpoint presentation free to. Compared to the same type of elevator without a regenerative converter, this.
In ohe, or overhead electrification systems, the supply of electricity is through an overhead system of suspended cables known as. Now according to the design, the drives can be classified into three types such as singlemotor drive, group motor drive and multi motor drive. What is an electric locomotive systems and their types in. The dc motors can be divided in four types shunt wound dc motor, series wound dc motor, compound wound dc motor and permanent magnet dc motor. Now coming to the term or question what is braking.
It offers several benefits over other systems, including quick start and stop, very efficient, pollution free, easy to handle and easy speed control. Electric vehicle and electric motor traction motor refers to a type of electric motor. Electric traction systems and their advantages electronics hub. The permissible range of voltages allowed for the standardised voltages is as stated in standards bs en 50163 and iec 60850. Download electric traction systems seminar report with ppt. Electric traction systems are various electrical systems that are used to drive railways. Due to the improved control structures, hardware and other automation systems in traction elevator systems, most of the manufacturers are producing energyefficient elevators. Drum brake also has an adjuster mechanism, an emergency brake mechanism and lots of springs. Electric heating is a process in which electrical energy is converted to heat. Traction system which do not involve the use of electricity such as steam engine drive, ic engine drive etc. Traction system which does not uses the electrical power to drive, are called non electrical traction system.
Electric traction means use of the electricity for all the over machines. Electric traction is suitable for suburban and urban railway where frequent starting and stopping and high schedule. Ieee std 1122004 revision of ieee std 1121996 ieee standard test procedure for polyphase induction motors and generators sponsor electric. The drive which uses the electric power for moving forward, such type of drive is called an electric traction drive.
The capital cost for provision of fixed installation required for electric traction is found adequately remunerative for routes having high levels of traffic. A railway electrification system supplies electric power to railway trains and trams without an onboard prime mover or local fuel supply. Find user manuals, quick start guides, product sheets and compliance documentation about free download a course in electrical power system by j. Electric traction 1701 however, the steam locomotive suffers from the following disadvantages. If electric supply is used for driving a locomotive, the system is known as electric traction. Pdf the preliminary choice of electric traction motors for a. There is a cost associated with electric heat requires a larger electrical service than normal. Each drive type is best suited for a specific application in the elevator market. Utilization of electrical energy pdf free download uee notes uee pdf notes. Or electric traction means a locomotion in which the driving force is obtained from electric motors. If the electric energy is use in this process is called electric traction.
Introduction traction driving forward of vehicle is called traction and the system, which employs this type of mechanism is called traction system. Electric traction systems seminar report a traction system causes the propulsion of vehicle in which tractive or driving force is obtained from various devices such as diesel engine drives. The elevators can be broadly classified as either electric traction type or hydraulic type. Talk is cheap, but traction is hard evidence that youre on the right path. What is an electric locomotive systems and their types in india. The major advantages of electric traction are, economy in operation and maintenance, saving in consumption of scarce diesel oil and increased through put of traffic. Traction system employed in locomotives can be electric or non electric. What are the various types of electric braking used in traction.
Electric traction motor is an electric motor which is used for driving a vehicle such as electric railways or electric vehicles. Electrical engineering objective questions and answers by jb gupta pdf free download. They are also used in electric vehicles, such as electric. Different types of electric poles, pcc pole, rcc pole, wooden. Types of electric motors electric motors dc motors other motors h ac motors s unt motor separately excited induction motor stepper motor motor brushlessdc motor series motor hysteresis motor permanent magnet dc pmdc synchronous motor reluctance motor compounded motor universal motor. Ppt electric traction system powerpoint presentation free. Thats called traction, and it makes everything else easierfundraising, hiring, press, partnerships, acquisitions.
Moreover, it serves as a source of continuing education, and as a. At each traction substation, normally two single phase transformers are installed, one which is in service and the other is 100% stand by. Motion control may be translational, rotational or combination of both. Also read electrical objective questions by p m mevada pdf free download. Thomas davenport, in brandon, vermont, erected a circular model railroad on which ran batterypowered locomotives or locomotives running on batterypowered. There may be two types of traction classifications on the basis of power supply. The shoes are pulled away from the drum by the springs when the brakes are released.
Now a day, magnetic traction is also used for bullet trains. The hoist ropes pass over a driving machine that raises and lowers the car. Delivery of electric equipment for towing electric locomotive of. Traction elevators run on loadbearing rails in the elevator hoistway. The cab is lowered and raised with traction steel ropes looped around a pulley connected to a highpowered motor. In this paper, several types of machines dedicated to electric vehicles traction are presented followed by the choice of the suitable machine fulfilling the vehicle specifications. The process of applying brakes can be termed as braking. Jun 27, 20 electric traction the system which use electrical power for traction system i. Strong counterweights keep the elevator suspended within the shaft. Ac motors are of two types induction motors and synchronous motors. Pdf on jun 1, 20, mohan krishna and others published types of power quality disturbances on ac electric traction drives. Modernization of diesel electric locomotive 2m62 and tep70 locomotives with respect to electrical subsystem article pdf available in procedia engineering 187. The overload capacity of steam locomotive is limited.
Jb gupta electrical engineering objective type questions. The first type of vehicle receives power from a distribution network while the second type of vehicle generates own power. Ppt electric traction system powerpoint presentation. Calculate ithe time taken and energy dissipated in the motor during starting. Indications, contraindications, and treatment techniques for these two types of traction are discussed. Traction elevators have an elevator car and counterweight attached to opposite ends of hoist ropes. Section 1 general information mn770 general information 11 introduction baldor electric manufactures several different drive types for the elevator industry. Utilization of electrical power including electric drives and electric traction by n. A traction motor is used to make rotation torque on a machine. Also i will give an overview to different types of traction systems, also the properties of good traction motor. Pdf modernization of dieselelectric locomotive 2m62 and. The electric poles play a very important role nowadays, they are used to give support to the overhead lines.
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