Is it a boundary condiction that theres no stress action on that boundary. Combined traction and energy recovery motor for electric vehicles. Awesco airborne wind energy system modelling, control and. Here, is an ebook and lecture notes for you to download. The energy cost of a rail transport system is very big especially for the tractions of trains in its daily operation. Combined traction and energy recovery motor for electric. Electric traction mcqs answers pdf electrical engineering. The international railway market is focused on minimizing the carbon footprint by optimising the use of natural resources and energy. 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. 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. A book for students, electrical and mechanical engineers, superintendents of motive power and others by edward parris burch, first published in 1911, is a rare manuscript, the original residing in one of the great libraries of the world. Strain energy is as the energy which is stored within a material when work has been done on the material. Electric traction mcqs answers pdf electrical engineering multiple choice questions answers.
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. There are many advantages of electric traction over other forms. Strain energy strain energy work done or, force x displacement u 22e x volume unit. For example, the pseudiofluid is free to leave the mold wall as pushed out by the advancing liquid. Retired, john deere product engineering center, waterloo, iowa robert d. System such a diesel electric drive, electric drive etc. The calculation of daily load factor and daily load profile as applied to traction power systems is discussed and incorporated into the tables. Determine the reactions at a and b from a freebody diagram of the complete beam. Continual effort on decreasing the traction energy cost intensities of various rail transport modes has been made by many researchers and practitioners on different aspects for a long time. Reviews of the electric traction motive power and energy supply to date about the guide we have now electric traction motive power and energy supply feedback people are yet to but quit his or her report on the action, you arent read it nevertheless. Deregulation of the railway infrastructure requires a different way of working and tools to support new business models in the railway industry the european en 50463 standard sets new requirements for energy measurement and the calculation of the. It offers several benefits over other systems, including quick start and stop, very efficient, pollution free, easy to handle and easy speed control. This chapter presents a general description of the elements that characterize a railway electric transportation systems. Overall energy consumption for railways is typical split into.
Efficient and reliable solutions for sustainable mobility. Lack of control over time, the market, or the company. Awesco airborne wind energy system modelling, control and optimisation. The tables focus on the large cable sizes typically utilized for dc traction power systems, and include a wide variety of duct bank configurations. To save electricity in electric traction system solar power is used. Department of transportations national university transportation center for. Developments in traction systems stuart hillmansen university of birmingham sustainable traction drives slide no. Electric traction will continue to play a dominant role in the railway since it is an environmentally clean technology compared to diesel traction and also its running cost is low.
May 22, 2018 download electric traction systems seminar report with ppt. Electric traction 1701 however, the steam locomotive suffers from the following disadvantages. In the absence of energy losses, such as from friction, damping or yielding, the strain energy is equal to the work done on the solid by external loads. Mechanics of materials edition beer johnston dewolf 11 10 sample problem 11. Powering the railways in the usa efficient and reliable. Electric traction has many advantages as compared to other nonelectrical systems of traction including steam traction. The seminar report explains the electric traction system which is the most efficient of all other traction systems. Traction drives lots of legacy stuff around railway energy consumption lots of concern about how to save energy some new concepts for future. Jun 27, 20 or electric traction means a locomotion in which the driving force is obtained from electric motors. Energy principles and finite element methods for pure traction linear elasticity article pdf available in computational methods in applied mathematics 52 january 2011 with 1,769 reads. Technical, market, and team risks are easier to address with traction. Which of the following is an advantage of electric traction over other methods of traction. Pdf energy principles and finite element methods for.
Energy for electric traction is consumed to overcome train resistance, grade and curve resistance, provide acceleration, losses in the locomotive during conversion of electric energy into mechanical energy and delivering at the point of contact and optimal use of auxiliary power in the locomotive for cooling of different equipment. It is used in electric trains, tramcars, trolley buses and dieselelectric vehicles etc. The mechanics of energy transfer will essentially control the final performance of the surficial machine. Traction is the best way to improve your chances of startup success. Summary this report contains the main results of the non traction energy consumption study prepared for the uic and its network of energy efficiency experts. Buy utilization of electrical energy and traction book online. The strain energy density u is defined as the strain energy per unit volume. In india where whether is mostly sunlight is available whole year, it is very good idea to use solar energy for the purpose of transportation. The focal point of the book will be the disposition of electric traction units powered by threephase induction motors. Presentation on economies of traction diesel vs electric ebook download ppt. Utilization of electrical enrgy and electric traction. By electric traction is meant locomotion in which the driving or tractive force is obtained from electric motors. Strain energy ppt free download as powerpoint presentation.
Other advantages include the lack of exhaust fumes at point of use, less noise and lower maintenance requirements of the traction units. Strain energy ppt fatigue material strength of materials. The solar power train is a step in saving these nonrenewable sources of energy. Electric energy generation utilization and conservation ebook download ppt. Ppt electric traction system powerpoint presentation free. Traction fields, moments, and strain energy that cells exert on their surroundings. If you charge for your product, it means customers are buying. Here it is assumed that the material remains elastic whilst work is done on it so that all the energy is recoverable and no. May 06, 20 traction mechanics is the study of train motion. Professor, biological systems engineering, virginia tech, blacksburg, virginia the primary purpose of agricultural tra ctors, especially those in the middle to high power ranges, is to perform drawbar work. Gtu electrical power utilization and traction semester exam previous year question paper download pdf. Non traction energy consumption uic study june 2012 final version izt and macroplan page 3 of 39 1. Most entrepreneurs regularly grapple with one or more of the following challenges.
Nm, or knm, or nmm strain energy due to elastic resilience proof. Review of strain energy methods and introduction to. Study on traction energy consumption and related co2 emissions. This is a summary of what i think is the most important and insightful parts of the book.
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