Sustainable operation of electric railway systems represents a significant purpose nowadays in the development of high power and high speed locomotives and trains. At present, high speed electric vehicles mostly work with three-phase induction motors or three-phase synchronous motors as traction motors. The two electric machine types have different efficiencies at different operation points, and experience differences with respect to safety, speed and power, energy use and exergy efficiency. An important issue that correlates these aspects is the electromagnetic torque developed by an electric traction motor. Under the vision of sustainable development and industrial ecology, the key points of sustainable operation of electric railway systems nowadays are related to the high electromagnetic torque developed by traction motors, energy savings and environmental impact mitigation, particularly through high exergy efficiency. In order to provide an overview of the sustainable operation of nowadays electric railway systems, an analysis is presented of the electromagnetic torque capability of AC electric motors utilized as traction motors in modern locomotives of high power and/or high speed. The results may enhance understanding that integrating technical and ecological aspects should represent a significant challenge to humanity within the present industrial world, particularly for optimising the safe and sustainable operation of electric railway traction systems.
Brief Biography of the Speaker:
Cornelia Aida Bulucea is currently an Associate Professor in Electrotechnics, Electrical Machines and Environmental Electric Equipment in the Faculty of Electrical Engineering, University of Craiova, Romania. She is graduate from the Faculty of Electrical Engineering Craiova and she received the Ph.D degree from Bucharest Polytechnic Institute. In Publishing House she is author of five books in electrical engineering area. Research work is focused on improved solutions for electrical networks on basis of new electric equipment, and environmental impact assessment of electric transportation systems. She has extensive experience in both experimental and theoretical research work, certified by over 70 articles in International indexed journals and papers in International conferences Proceedings, and 15 research projects from industry. She participated in over twenty WSEAS International Conferences and ten INASE International Conferences, presenting papers and chairing sessions. She was a Plenary Speaker in The 2015 International Conference on Applied Mathematics, Computational Science and Engineering (AMCSE 2015), Agios Nikolaos, Crete, Greece, October 17-19, 2015, in The 2014 International Conference on Mathematical Methods and Computational Techniques in Science and Engineering (MMCTSE'14), Athens, Greece, November 28-30, 2014., in The 13th International Conference on Electric Power Systems, High Voltages, Electric Machines (POWER'13), Chania, Crete Island, Greece, August 27-29, 2013, in The 5th IASME/WSEAS International Conference on Energy and Environment (EE'10), held by the University of Cambridge, UK, February 23-25, 2010, in The 4th IASME/WSEAS International Conference on Energy and Environment (EE'09), held by the University of Cambridge, Cambridge UK, February 24-26, 2009, in The 8th WSEAS International Conference on Power Systems (PS'08), held by the University of Cantabria, Santander, Spain, September 23-25, 2008.