Vtu electrical power utilization semester exam previous year question paper. The types of electrical drives are two such as a standard inverter as well as a servo drive. The sic1181kq and sic1182kq are single channel gate drivers for sic mosfets. High power factor converters for singlephase ac traction drives a. The paper considers the variation of circuit design of the electric drives in traction rolling stocks when traditional dc electric machines are replaced with ac electric machines. Sep 11, 2016 if the electric energy is use in this process is called electric traction. This video provides a general perspective of how electric drives technology is a key technology that facilitates to produce devices that we can find in our daily live such as. Presently, there are four types of track electrification systems are available based on the availability of supply.
Electric and magnetic fields under contact lines and in proximity of the traction power installations. Electric traction free download as powerpoint presentation. Control in power electronics and electrical drives 1st. The electric traction system ppt briefly discusses the types, supply system, traction motors, braking system, advantages and disadvantages and recent trends. High power factor converters for singlephase ac traction. Drives employing voltage source inverters, current source inverters, and induction and synchronous motors have been discussed. Main inverter electric traction stmicroelectronics. Unless the traffic to be handled is heavy, electric traction becomes uneconomical. If the electric energy is use in this process is called electric traction. Dc traction units use direct current drawn from either a conductor rail oran overhead line. A servo drive is used to control the torque as well as speed, and also components of the positioning. Power electronics and electric drives for traction.
The symposium provided a forum for discussing the effects of converter control on the design of electrical machines. Electrical railway transportation systems ieee press. An electric motor is a device that converts electrical energy to mechanical energy. The rcc includes the main control room, equipment room, uninterrupted power supply ups room, remote control laboratory and battery room and is the nerve centre of the traction power control. Different applications in power electronics, power transmission and other areas. The purpose of power modulebased traction inverter is to convert the dc current from the electric vehicles battery to ac current to be used in the electric motor to drive the vehicles propulsion system. Electric drives are not a new technology, but the adaptation for offroad vehicle applications is in its infancy high temperature power electronics development this paper presents three different applications of median filters in power electronic systems, specifically, in traction motor drives.
Chapters on electrical drives and electric traction. Jun 18, 20 dc traction units use direct current drawn from either a conductor rail oran overhead line. Supply railcar traction inverter with allsic power module to odakyu electric railway specifications of main circuit input voltage. Nonelectric traction systemmechanical traction system. Electrical engineering objective questions mcq with answer free pdf download. The most vital factor against electric traction is the initial high cost of laying out overhead electric supply system. Pdf electric drives of traction rolling stocks with ac. There may be two types of traction classifications on the basis of power supply. Dec 20, 2016 this video provides a short introduction to electric drive technology for traction applications.
Calculate candle power capacitor capacity circuit coil connected constant copper copper loss d. Locomotives rolling stock system power supply system information system high speed railway lrt electric bus epc project management. The way of giving the power supply to locomotive unit is generally referred as traction electrification system. Federica foiadelli, phd, is an associate professor in the electric power system sector at the department of energy of politecnico di milano. Traction system which do not involve the use of electricity such as steam engine drive, ic engine drive etc. Basic notions for the study of electric traction systems 17. Pdf optimisation of electric motors for traction drives. Power supply 25 kv, ac, 50 hz single phase power supply for electric traction is derived from the grid of state electricity boards through traction substations located along the route of the electrified sections at distance of 35 to 50 km apart. Electric traction alternating current electric power.
Nov 30, 2015 trolley buses or tramways supplied with dc supply i. It also plays a significant role in capturing energy from regenerative braking and feeding it. Optimisation of electric motors for traction drives. The system in which the motor is located and makes it spin is called the. Auxiliary power supply the auxiliary power supply supplies stable power to the airconditioning and lighting equipment necessary for maintaining comfortable conditions inside a railcar. 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. In fact, in many industries they are the largest enduse of electricity, followed by nonprocess uses such as lighting and hvac, which also uses motors and electric process heat.
Nov 15, 2016 this video provides a general perspective of how electric drives technology is a key technology that facilitates to produce devices that we can find in our daily live such as. 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. This video provides a short introduction to electric drive technology for traction applications. Also we supply advanced high power controller designed for traction applications for. Power modules for electric traction hybrid and battery. It is an essential device for modern railway vehicles.
Electric traction systems are various electrical systems that are used to drive railways. Rajput this book on utilisation of electrical power including electrical drives and electric traction has been written for students preparing for b. It also plays a significant role in capturing energy from regenerative braking and feeding it back to the battery. Utilization of electrical energy pdf notes uee pdf notes. Gtu electrical power utilization and traction semester exam previous year question paper download pdf. It consists of nine chapters in all, covering the various topics systematically and exhaustively. Utilization of electrical power including electric drives and electric traction by n. Power failure for few minutes can cause traffic dislocation for hours.
The most popular line voltages for overhead wire supply systems 1500vdc and 3000v dc. Electric motors and drives account for a substantial share of electricity use in the commercial and industrial sectors. Subject to all the possible stress found in a road vehicle from heat and. It is an applicationoriented book for the design and development of traction systems accompanied by a description of the core technology. 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. Influences of eddy currents on underground metallic pipes and cables. 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. All these drives and traction motors should satisfy the wish for efficient, lowcost and, at the same time. Up to 8 a peak output drive current enables the product to drive devices with nominal currents of up to 600 800 a typical. This book will useful to most of the students who were studying electrical and electronic engineering. Utilization of electrical energy pdf free download uee notes uee pdf notes. May 22, 2018 the electric traction system ppt briefly discusses the types, supply system, traction motors, braking system, advantages and disadvantages and recent trends. Tiss to supply 68 units of electric locomotives to taiwan railways administration. Traction means drawing or pulling something over a surface.
Costantini department of electronic engineering, university of rome tor vergata, italy. Suryanarayana, new age international p limited, publishers, 1996. It is a summary of chapter 1 of the book power electronics and electric drives for traction. Download free sample and get upto 51% off on mrprental. Tiss to deliver replacement electric equipment for taiwan high speed rail.
General closedloop controlled rectifier fed dc motor drive the main power circuit usually consists of a one or two or four or sixthyristor circuit, which rectifies the incoming ac supply to produce a. Alternative motor technologies for traction drives of. Ppt electric traction system powerpoint presentation. It is a summary of chapter 1 of the book power electronics and electric drives for. Challenges of modern ac motor traction drives prof. Before 1993 1993 1996 2003 2008 2010 2011 2012 power systems hvdc and facts traction converters at abb transportation systems later adtranz power control and renewables transportation traction converters mediumvoltage. Power electronics and electric drives for traction applications offers a practical approach to understanding power electronics applications in transportation systems ranging from railways to electric vehicles and ships.
General closedloop controlled rectifier fed dc motor drive the main power circuit usually consists of a one or two or four or sixthyristor circuit, which rectifies the incoming ac supply to produce a dc supply to the motor armature. Utilization of electrical enrgy and electric traction. Abstract in the last years new power transistors, characterized by a high commutation. Chapter one first pantograph second main circuit breaker pantograph effect electric traction power from the catenary to. Electric traction and startergenerators, compatible with dc, 3phase acinduction and dcbrushless motors, wide voltage supply range 100450v and continuous power output of up to 160kw fig. Morris brenna, phd, is an associate professor in the electric power system sector at the department of energy of politecnico di milano. A valuable reference for application engineers in traction industry responsible for design and development of products as well as traction industry researchers, developers and graduate students on power electronics and motor drives needing a reference to the application examples.
Electrical engineering objective questions mcq with answer. Reinforced galvanic isolation is provided by power integrations revolutionary solid insulator fluxlink technology. He has made special studies on power quality, converter controls and power supply of electric systems for transportation. It also can be viewed as a device that transfers energy from an electrical source to a mechanical load. This key component has a direct impact on road performance, driving range and reliability of the vehicle also as a consequence of their weight and size. Ppt electric traction powerpoint presentation free to. The traction inverter converts energy from the vehicles battery in order to drive the motors in the drivetrain. Non electric traction systemmechanical traction system. Power supply 25 kv, ac, 50 hz single phase power supply for electric traction is derived from the grid of state electricity boards through traction substations located along the route of the electrified sections at. Battery electric drive and diesel electric drive etc.
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