Electric traction system notes pdf

Its a very important topic for various recruitment exams like state electricity board exams etc. Electric drive system will operate in steady state at this speed, provided it is the speed of stable state equilibrium. The steam engine drive is the best example of a non electric traction system and it is the first locomotive system used before the invention of actual electric traction systems. The shoes are pulled away from the drum by the springs when the brakes are released. Uee complete pdf notesmaterial 2 download zone smartzworld. Pdf types of power quality disturbances on ac electric traction. Electrical drives and traction notes vssut smartzworld. In an electric traction system the driving force to pull a train is generated by the traction motors.

Electric drives full notes, pdf, ebooks, all units basic components of an electric drives system classroom lecture slides notes pdf model based predictive control of electric drives complete guide lecture classroom notes pdf. Jun 21, 2017 electric tractioni,advantages and disadvantages of electric traction,system of traction,mechanical features,traction motors. Chapter 1 railway electrification system chapter 2 traction power network chapter 3 railway electric traction chapter 4 electric locomotive chapter 5 pantograph rail chapter 6 electric multiple unit chapter 7 trolley pole chapter 8 third rail chapter 9 overhead lines chapter 10 groundlevel power supply. When fields are reversed, traction motors change their direction of rotation, with the result that the locomotives direction of travel is changed. Pdf lecture notes electrical drives and traction electrical drives. A traction system that doesnt use electrical energy for the movement of vehicle at any stage is referred as nonelectric traction system. Mohammed tawfeeq 1 power system protection lecture notes mohammed t. Electrical engineering objective questions mcq with answer free pdf download. Electric energy generation utilization and conservation ee6801 notes pdf free download. Jan 08, 2019 electric traction means using the electric power for traction system i. Ac traction, diesel electric equipment, trains lighting system, specific energy, factors affecting specific energy consumption.

List of interurban railways in north america wikipedia. 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. Luminous intensity is defined as the flux emitted by the source per unit. Nov 29, 2017 for diploma in electrical engineering. When the load increases the speed of the motor drops and the new operating point of speed is obtained after the transient. The evidence of this mode of running can still be seen on the track down the slope on the. Ppt electric traction system powerpoint presentation. Traction drive system and its characteristics as power transmission shuzou sanda, kisaburo hayakawa research report abstract improvement in efficiency and durability is necessary for developing a traction drive continuously variable transmission tcvt. Lecture notes in electrical drives and traction systems for students. 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 traction system 1 electric traction system presented by amit raj roll no. Power failure for few minutes can cause traffic dislocation for hours. 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. Ee6801 notes electric energy generation utilization and. Electrical engineering objective questions mcq with answer. This system is separate from but similar to the system designed by the pennsylvania railroad, which is now operated by amtrak. Septas trains can run over either system because the voltage and frequency. 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. The traction coefficient at the power transmitting contacts of the tcvt, which is the dominant. Light is defined as that radiant energy in the form of waves which produces a sensation of vision upon the human eye. A traction system that doesnt use electrical energy for the movement of vehicle at any stage is referred as non electric traction system. Electric machines are replacing ices even in traction applications such as vehicles and ship propulsion. However, due to its higher cost and nonavailability, it is rarely used for these purposes. Thomas davenport, in brandon, vermont, erected a circular model railroad on which ran batterypowered locomotives or locomotives running on batterypowered rails in 1834.

Nonelectric traction systemmechanical traction system. Which of the following is the voltage for single phase a. These systems of tractions may be classified broadly into groups namely. The most vital factor against electric traction is the initial high cost of laying out overhead electric supply system. The calcutta trams use 550v dc with an overhead line catenary. Pdf on jun 1, 20, mohan krishna and others published types of power quality. Modern electric traction get best books pdf, study. Act of drawing or state of being drawn propulsion of vehicle is called tractions. Non electric traction system mechanical traction system. While diesel locomotives burn petroleum, electricity can be generated from diverse sources, including renewable energy. System of electric traction mechanics of train movement.

Switchgear and protective devices 2015 6 p a g e 1. In mechanical terms, it is defined as the adhesive friction between the wheel and the surface on which it moves between a car tire and road. This ppt helps to understand the concept of electric traction slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Jan 31, 2016 electric traction is part of subject utilization of electrical energy. Which of the following is an advantage of electric traction over other methods of traction. Traction system can be broadly classified as steam engine drive, internal combustion engine drive and. Electric power systems research xxx 2016 xxxxxx fig. Introduction the process of moving any vehicle is called traction. Lazim alzuhairi professor of electrical and electronics engineering electrical engineering department philadelphia university, jordan. Power system protection part power system protection. Syllabus, question banks, books, lecture notes, important part a 2 marks questions and important part b 16 mark questions, previous years question papers collections. Jun 18, 20 typical voltages used for electric traction are 1. One of the major application of an electric drive is to transport men and materials from one place to another. 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.

Calcutta had an overhead 3kv dc system until the 60s. Speed time, distance time and simplified speedtime curves, attractive effort for acceleration and propulsion, effective weight, train resistance, adhesive weight, specific energy output and. Introduction,types of services,main line services,urban service,speedtime curve for main line service. Open library is an initiative of the internet archive, a 501c3 nonprofit, building a digital library of internet sites and other cultural artifacts in digital form. 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. As a consequence, nearly 23rd of all electrical power is utilized by electrical machines in the form of electric drives. There are various systems of traction prevailing in our country such as steam engine drive, electric drive. Electric traction basic, traction types, advantages, control for traction. Hybrid electrical vehicles introduction a hybrid electric vehicle hev has two types of energy storage units, electricity and fuel. Electrical power utilization notes pdf vtu epu smartzworld. Configuration and performance of electrical vehicles, traction motor characteristics, tractive effort, transmission requirement, vehicle. Pdf ee6801 electrical energy generation, utilization and. Electric traction 114 to 158 introduction requirements of an ideal traction systems of traction speed time curve tractive effort coefficient of adhesion, selection of traction motors method of speed control saving by series parallel control, ac traction equipment. Unless the traffic to be handled is heavy, electric traction becomes uneconomical.

This is a list of interurban railways in north america. Average rating from 11,252 customers who received a brake pads replacement. In this post provide you latest and updated 2018 electrical mcq objective questions with answer which are help for preparation all electrical engineering exams like gate, ies, jto, psus, rrb jeaen, rrb loco pilot and technicians, ssc je, dmrc, lmrc, isro and other state level engineering exams. The same was true with manhattans former streetcar system. In ohe, or overhead electrification systems, the supply of electricity is through an overhead system of suspended cables known as. Ppt electric traction system powerpoint presentation free. Drives employing electric motors are known as electrical drives. Traction power electrification system investigation report washington metropolitan area transit authority. What is an electric locomotive systems and their types in india. Concept of steady state stability has been developed to readily evaluate the stability of an equilibrium point from the steady state speed torque curves of the motor and load system. Federal transit administration december 9, 2016 8 new insulators that can be removed for cleaning and then reinstalled.

Utilization of electrical energy pdf notes uee pdf notes unit i electric drives. Electric traction the system which use electrical power for traction system i. Clcik here download electrical drives and traction lecture notes pdf. All were opened primarily as passenger carriers, although many survived as freight railways after passenger service ceased. Some of the technical discussion is based on work that has been reported in a conference publication1.

Traction drive system and its characteristics as power. All heating requirements in domestic purposes such as cooking, room heater, immersion water heaters, and. Traction system which do not involve the use of electricity such as steam engine drive, ic engine drive etc. Ee6801 electric energy generation utilization and conservation notes regulation 20 anna university free download. A railway electrification system supplies electric power to railway trains and trams without an onboard prime mover or local fuel supply. Download link is provided and students can download the anna university ee6801 electrical energy generation, utilization and conservation eeguc syllabus question bank lecture notes syllabus part a 2 marks with answers part b 16 marks question bank with answer, all the materials are listed below for the students to make use of it and score good maximum marks with our study materials. Traction power electrification system investigation wmata.

Working of drum brakes drum brakes work on the same principle as the disc brakes. The power system should be designed and managed to deliver this energy to the utilization points with both reliability and economically. 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. Electrical calculation and electrical notes on electrical engineering. Methods of electrialc heating resistance, arc, induction and dielectric heating. Some electric traction systems provide regenerative braking that turns the trains kinetic energy back into electricity and returns it to the supply system to be used by other trains or the general utility grid. Now a day, magnetic traction is also used for bullet trains. Electricity is typically generated in large and relatively efficient generating stations.

The drive which uses the electric power for moving forward, such type of drive is called an electric traction drive. Electric traction means using the electric power for traction system i. Lecture notes electrical drives and traction veer surendra sai university of technology burla, odisha, india department of electrical. Oct 20, 2017 traction is defined as the act of drawing or pulling especially by a motive force drawing of carriage by horse constitute traction. Southeastern pennsylvania transportation authority septa operates a 25 hz traction power system in the vicinity of philadelphia, pennsylvania, that it inherited from the reading railroad. Operation of traction vehicles with 3f induction motors in electric railway system. Optimising power management strategies for railway traction. Configuration and performance of electrical vehicles, traction motor characteristics, tractive effort, transmission requirement, vehicle performance, and energy. 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.

The mechanics involves conversion of overhead electrical powerdieselsteam power in rail horse power to haul a train encountering acceleration, train, grade, curve resistance and similarly braking. Its raining as you drive on a darkened highway late at night, but you never worry about safety your car has. Or electric traction means a locomotion in which the driving force is obtained from electric motors. Drum brake also has an adjuster mechanism, an emergency brake mechanism and lots of springs. The system which use electrical power for traction system i. Sep 11, 2016 if the electric energy is use in this process is called electric traction. It consists of an electric motor motors, a transfer mechanism, an electrical energy converter, and a control system. Modern electric traction drive systems make use of power electronic devices which directly affect. 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. The track electrification refers to the type of source supply system that is used while powering the electric locomotive systems. Here you can download the electrical power utilization notes pdf vtu epu of as per vtu syllabus. Electric railways use either electric locomotives hauling passengers or freight in separate cars or electric multiple units passenger cars with their own motors. In a series circuit, current passes through each device in completing its path. At each traction substation, normally two single phase transformers are installed, one which is in service and the other is 100% stand by.

Unit 8 introduction to electric and hybrid vehicles. Traction system which do not involve the use of electricity such as steam engine drive, ic engine drive. Aluminium is cheap and light as compared to copper but it has much smaller conductivity and tensile strength. The calcutta metro uses 750v dc traction with a thirdrailmechanism for delivering the electricity to the emus electricmultiple units. Ee6801 electrical energy generation, utilization and conservation eeguc syllabus unit i electric drives and traction fundamentals of electric drive choice of an electric motor application of motors for. Traction is defined as the act of drawing or pulling especially by a motive force drawing of carriage by horse constitute traction. This chapter presents a general description of the elements that characterize a railway electric transportation systems. Luminous flux is defined as the energy in the form of light waves radiated per second from a luminous body. If you continue browsing the site, you agree to the use of cookies on this website. If the electric energy is use in this process is called electric traction. Pdf ee6602 embedded system es books, lecture notes, 2marks with answers.

What is an electric locomotive systems and their types in. The electric traction system ppt briefly discusses the types, supply system, traction motors, braking system, advantages and disadvantages and recent trends. The electric equivalent circuit of the armature and the freebody diagram of the rotor are shown in the following figure. Download free sample and get upto 51% off on mrprental. Elsewhere, the term was not used or did not have the same meaning. Traction control is a car safety feature that prevents wheels from spinning on lowgrip surfaces. Utilization of electrical energy pdf notes uee pdf notes. For this example, we will assume that the input of the system is the voltage source applied to the motors armature, while the output is the rotational speed of the shaft.

Nowadays the trend is to use aluminium in place of copper. Ac and dc drives, modern trends in drives technology, characteristics of dc, induction and synchronous motor drives, starting, running, speed control, braking, size and rating of motors short time, intermittent, continuous, mechanical considerations. Introduction, requirements of an ideal traction, systems of traction, speed time curve, tractive effort, the coefficient of adhesion, selection of traction motors, the method of speed control, energy saving by series. Ac traction, diesel electric equipment, trains to light system, specific energy, factors affecting specific energy consumption.