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. Or electric traction means a locomotion in which the driving force is obtained from electric motors. Non electric traction systemmechanical traction system. They are also used in electric vehicles, such as electric. Electric traction systems are various electrical systems that are used to drive railways. Jan 08, 2019 electric traction means using the electric power for traction system i. The shoes are pulled away from the drum by the springs when the brakes are released. 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. Pdf electrical vehicles practical solutions for power.
Different poles are used in different applications. Ac motors are of two types induction motors and synchronous motors. Different types of poles are used in different places. The hoist ropes pass over a driving machine that raises and lowers the car. Electricity is used to drive the electric locomotives. Adequate supplies of feed water at regular intervals are required. 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. The permissible range of voltages allowed for the standardised voltages is as stated in standards bs en 50163 and iec 60850. Hybrid electrical vehicles introduction a hybrid electric vehicle hev has two types of energy storage units, electricity and fuel. Calculate ithe time taken and energy dissipated in the motor during starting. Pdf on jun 1, 20, mohan krishna and others published types of power quality disturbances on ac electric traction drives.
Electric traction system requirements, terms, advantages. The electric poles play a very important role nowadays, they are used to give support to the overhead lines. Basic notions for the study of electric traction systems 17. Drum brake also has an adjuster mechanism, an emergency brake mechanism and lots of springs. Steam engine drive based vehicles used for railways internal combustion ic engine drive based vehicles used for road transport electric traction system.
It is used in electric trains, tramcars, trolley buses and dieselelectric vehicles etc. Now a day, magnetic traction is also used for bullet trains. The seminar report explains the electric traction system which is the most efficient of all other traction systems. What are the various types of electric braking used in traction. 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. Pdf on mar 15, 2015, igor bolvashenkov and others published the preliminary choice of electric.
Now according to the design, the drives can be classified into three types such as singlemotor drive, group motor drive and multi motor drive. Electric traction motor is an electric motor which is used for driving a vehicle such as electric railways or electric vehicles. 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. Delivery of electric equipment for towing electric locomotive of. Mar 06, 20 the electric or counterweight elevator is a widely used system.
The classification of electrical drives can be done depending upon the various components of the drive system. Electric traction means use of the electricity for all the over machines. 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. Traction elevators have an elevator car and counterweight attached to opposite ends of hoist ropes. Pdf the preliminary choice of electric traction motors for a. Electric traction 1701 however, the steam locomotive suffers from the following disadvantages.
Utilization of electrical energy pdf notes uee pdf notes. In ohe, or overhead electrification systems, the supply of electricity is through an overhead system of suspended cables known as. Electric traction has many advantages as compared to other nonelectrical systems of traction including steam traction. Ppt electric traction system powerpoint presentation. 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. 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. There is a cost associated with electric heat requires a larger electrical service than normal. Different types of electric poles, pcc pole, rcc pole, wooden. Pdf types of power quality disturbances on ac electric traction. Traction will teach you the nineteen channels you can use to build a customer base, and how. Introduction traction driving forward of vehicle is called traction and the system, which employs this type of mechanism is called traction system. By electric traction is meant locomotion in which the driving or tractive force is obtained from electric motors.
First of all we can classify the term braking in two parts. The capital cost for provision of fixed installation required for electric traction is found adequately remunerative for routes having high levels of traffic. 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. Pdf modernization of dieselelectric locomotive 2m62 and. 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. Traction system which does not uses the electrical power to drive, are called non electrical traction system.
The track electrification refers to the type of source supply system that is used while powering the electric locomotive systems. In an electric traction system the driving force to pull a train is generated by the traction motors. Classification of electrical drives or types of electrical. Utilization of electrical power including electric drives and electric traction by n. Electric traction systems and their advantages electronics hub. Electric drive article about electric drive by the free. A traction motor is used to make rotation torque on a machine.
Electric traction motor market by component hardware. 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. 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. Free download a course in electrical power system by j.
May 22, 2018 the electric traction system ppt briefly discusses the types, supply system, traction motors, braking system, advantages and disadvantages and recent trends. Thomas davenport, in brandon, vermont, erected a circular model railroad on which ran batterypowered locomotives or locomotives running on batterypowered rails in 1834. One of the major application of an electric drive is to transport men and materials from one place to another. Utilization of electrical energy pdf free download uee notes uee pdf notes utilization of electrical power including electric drives and electric traction by n. 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.
Electric vehicle and electric motor traction motor refers to a type of electric motor. Traction means drawing or pulling something over a surface. 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. Traction motors are used in electrically powered rail vehicles such as electric multiple units and electric locomotives. Ppt electric traction system powerpoint presentation free. 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. 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. Section 1 general information mn770 general information 11 introduction baldor electric manufactures several different drive types for the elevator industry. Jb gupta electrical engineering objective type questions. However, adoption of the electric drive by industry was delayed for lack of a reliable source of electric energy.
Methods of electrialc heating resistance, arc, induction and dielectric heating. Compared to the same type of elevator without a regenerative converter, this. Power electronic converters are used everywhere in normal daily routines at home, commercial workplaces or in an industrial environment. Generally, a drive system is basically has a mechanical load, a transmission system and a prime mover. Find user manuals, quick start guides, product sheets and compliance documentation about free download a course in electrical power system by j. Traction elevators run on loadbearing rails in the elevator hoistway. Act of drawing or being drawn is known as traction.
List the advantages and disadvantages of electric traction. Electric traction basic, traction types, advantages, control for traction. 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. The elevators can be broadly classified as either electric traction type or hydraulic type. The overload capacity of steam locomotive is limited. Advantages of electric traction transport due to their pollutionfree locomotion as.
Ppt electric traction powerpoint presentation free to. Iakobi tested a dc electric motor supplied from a storage battery and used it to drive a screw propeller on a boat. 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. Working of drum brakes drum brakes work on the same principle as the disc brakes. Each drive type is best suited for a specific application in the elevator market. Moreover, it serves as a source of continuing education, and as a.
Zimmer traction handbook a complete reference guide to the basics of traction. Due to the improved control structures, hardware and other automation systems in traction elevator systems, most of the manufacturers are producing energyefficient elevators. Electric traction will continue to play a dominant role in the railway since it is an. The electric traction system can be broadly divided into two groups. Motion control may be translational, rotational or combination of both. Suryanarayana, new age international p limited, publishers, 1996. 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. Battery requirements for typical traction applications.
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. The process of applying brakes can be termed as braking. In the second category comes a diesel engine electric drive. Electric traction involves the use of electricity at some stage or all the stages of locomotive movement. 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. Systems of railway electrification presently, following four types of track. These drives are dc scr thyristor, ac inverter vvvf and ac vector. This book will useful to most of the students who were studying electrical and electronic engineering. For mid and highrise buildings, traction or cabledriven type of. There are three main types of elevators commonly used. Thats called traction, and it makes everything else easierfundraising, hiring, press, partnerships, acquisitions. We know that brake is an equipment to reduce the speed of any moving or rotating equipment, like vehicles, locomotives.
Fundamentals of electric traction for electrical engineering. Thomas davenport, in brandon, vermont, erected a circular model railroad on which ran batterypowered locomotives or locomotives running on batterypowered. Some people would suggest that the electrical hazard of shock and fire caused by electricity is an issue. The drive which uses the electric power for moving forward, such type of drive is called an electric traction drive. Modernization of diesel electric locomotive 2m62 and tep70 locomotives with respect to electrical subsystem article pdf available in procedia engineering 187. It offers several benefits over other systems, including quick start and stop, very efficient, pollution free, easy to handle and easy speed control. However, the roped elevator design remains as the most popular. The following are the two types of non electric traction systems. 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 system which use electrical power for traction system i. Strong counterweights keep the elevator suspended within the shaft. The first electric drive was devised in russia in 1838, when b. A 2200v,50 hz, three phase,6 pole,yb connected squirrel cage induction motor has following parameters.
A railway electrification system supplies electric power to railway trains and trams without an onboard prime mover or local fuel supply. 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. All heating requirements in domestic purposes such as cooking, room heater, immersion water heaters, and electric toasters and also in industrial. Mar 19, 2015 traction means drawing or pulling something over a surface.
What is an electric locomotive systems and their types in. Two types of vehicles are used for electric traction. 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. 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. Talk is cheap, but traction is hard evidence that youre on the right path. Traction system employed in locomotives can be electric or non electric. Traction motors in diesel locomotives ee publishers. Which of the following is an advantage of electric traction over other methods of traction. Regenerative drive system in elevator is a remarkable advancement in these energy efficient elevators. Utilization of electrical energy pdf free download uee notes uee pdf notes. Introduction, requirements of an ideal traction, systems of traction, speed.
Ieee std 1122004 revision of ieee std 1121996 ieee standard test procedure for polyphase induction motors and generators sponsor electric. The traction system that doesnt use electricity at any stage of a vehicle movement is referred to as a nonelectric traction system. Electric traction is suitable for suburban and urban railway where frequent starting and stopping and high schedule. Electrical vehicles practical solutions for power traction motor systems article pdf available in ieee transactions on industry applications pp99. Ieee std 1122004, ieee standard test procedure for.
At each traction substation, normally two single phase transformers are installed, one which is in service and the other is 100% stand by. It is used in electric trains, tramcars, trolley buses and diesel electric vehicles etc. There may be two types of traction classifications on the basis of power supply. Also read electrical objective questions by p m mevada pdf free download. If the electric energy is use in this process is called electric traction. The control equipment is provided for manual and automatic. What is an electric locomotive systems and their types in india. Download electric traction systems seminar report with ppt. If electric supply is used for driving a locomotive, the system is known as electric traction.
Electrical engineering objective questions and answers by jb gupta pdf free download. 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%. Jun 27, 20 electric traction the system which use electrical power for traction system i. Also i will give an overview to different types of traction systems, also the properties of good traction motor. The electric or counterweight elevator is a widely used system. Now coming to the term or question what is braking. The cab is lowered and raised with traction steel ropes looped around a pulley connected to a highpowered motor. It is free from smoke and flue gasses maintenance cost. 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.
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