Electrical Traction

This book conveys mechanical fundamentals of electric railway propulsion, which includes rail-bound guidance, transmission of traction effort from wheel to rail under the influence of non-constant levels of adhesion and the transmission of motor torque to a spring-mounted and thus sliding drive set.

The first comprehensive case study of railroad electrification in the United States, this pioneering book highlights a subject of current government and industry studies and a target of billions of dollars of Amtrak rehabilitation funds. Both energy conservation and environmental quality remain at stake together with transportation efficiency. Electric traction on the Pennsylvania Railroad was a technological success handicapped by an economic factor: the onetime relatively low cost of petroleum, which gave diesel locomotives and highway vehicles a temporary advantage. Today the growing cost advantage of electricity--generated with coal; atomic energy; water, wind, and solar power--prefigures a revival of electric railroad traction. Drawing upon previously untapped records of the PRR and its suppliers, notably General Electric, the author traces stages in cooperative risk management. First came challenges of limited scope which steam locomotives were unable to meet: the New York City tunnel extension of 1910 and the Philadelphia suburban modernization begun in 1913. Next came a decade of mainline electrification, 1928-38: first New York to Washington and then passenger and freight extensions to Harrisburg. These projects were preceded by large-scale research and experimentation, followed by constant improvement in equipment and operations. Electric traction is depicted as a program involving not only the railroad but also its consultants, equipment and energy suppliers, and (to a lesser degree) governmental bodies. Locomotive and power transmission design is described in detail--with copious illustrations--as are the creative achievements of managers, engineers, and workers. And the presentation will be clear to readers without specialized technical or business backgrounds.

Electric Traction and Utilisation of Electrical Energy, with the former constituting approximately two thirds of the course, is an elective subject prescribed in electrical engineering syllabus of most engineering colleges. While there is a growing demand for making this subject compulsory, most students complain about non-availability of books dealing with all elements of electric traction featuring in the syllabus. To bridge this gap and present the subject in a lucid manner, this book was conceived by the authors with the following broad objectives: (i) To present electric traction as a complete system. (ii) To combine knowledge of fundamentals with an eye on practical orientation. (iii) To give a glimpse of the present state-of-the-art. The books currently available on the subject mostly deal elaborately with train mechanics, traction motor and its control gears, but miss certain key aspects that are essential for appreciation of the subject as a system of transportation. The book has sixteen chapters dealing with different aspects of electric traction. The unique feature of this book is that it includes chapters dealing with such aspects as Linear Induction Motor Propulsion, Railway Signalling, Protection of Electric Locomotive Equipment and Circuits, Preventive/Corrective Maintenance and Application of Computers for Management of Electric Traction System. Illustrative worked Out examples and unsolved numerical exercises taken from question papers of different universities and competitive examinations are designed to impart sufficient clarity and grasp of the fundamentals. The practising engineer in the field, in most cases, pick up the subject in bits and pieces over a rather long time frame. A complete view of the entire subject in the beginning itself may generate better understanding leading to innovativeness and efficiency at work. The authors hope that the book will be helpful to graduate level students as well as practising engineers in the field. Suggestions for further improvements in subsequent editions will be most welcome.

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. It is an application-oriented book for the design and development of traction systems accompanied by a description of the core technology. The first four introductory chapters describe the common knowledge and background required to understand the preceding chapters. After that, each application-specific chapter: highlights the significant manufacturers involved; provides a historical account of the technological evolution experienced; distinguishes the physics and mechanics; and where possible, analyses a real life example and provides the necessary models and simulation tools, block diagrams and simulation based validations. Key features: Surveys power electronics state-of-the-art in all aspects of traction applications. Presents vital design and development knowledge that is extremely important for the professional community in an original, simple, clear and complete manner. Offers design guidelines for power electronics traction systems in high-speed rail, ships, electric/hybrid vehicles, elevators and more applications. Application-specific chapters co-authored by traction industry expert. Learning supplemented by tutorial sections, case studies and MATLAB/Simulink-based simulations with data from practical systems. 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.