Mathematical Models for Fostering the Sustainable Energy Conversion in Electric Power Systems

Professor Cornelia Aida Bulucea
Faculty of Electrical Engineering
University of Craiova
ROMANIA
E-mail: abulucea@em.ucv.ro
 

Abstract: To address meaningfully many of the problems facing electric power systems, conditions for the performance of sustainable electric systems must be formulated. Correspondingly, mathematical models can help understand the efficiencies of electrical systems and guide improvement efforts. Costs should reflect value, which is doubtless associated with sustainability aspects, and the benefits of using mathematical models to improve the sustainability of systems which convert electric energy are fostered.
In line with this idea, modelling the three-phase electrical transformer could attempt to optimize the efficiency of energy use within the power transformer operation. Hence, the structural diagram method applied to three-phase electric transformers is illustrating the efficiency of energy use within the power transformer operation, by highlighting the interactions and the feedback loops among the different variables (electric currents and magnetic fluxes) which describe the power transformer operation.
Following the notion of sustainable electrically driven systems, mathematical patterns illustrate energy conversion processes during the operation of electric railway vehicles with traction synchronous and induction motors, highlighting the chain of interactions within the main electric equipment. In order to support transport systems’ sustainability the operation of electric railway vehicles has been addressed, on electrically driven railway systems supplied from a d.c. or an a.c. contact line. This presentation supports the findings that electric traction drive systems using synchronous motors fed by current inverters, and induction motors fed by variable voltage variable frequency (VVVF) inverters enhance the sustainable operation of electric railway trains.

Short biography: 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 four 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 journal and conference research papers and 15 research projects from industry. Due to WSEAS recognition as huge scientific Forum she participated over time in nineteen WSEAS International Conferences, presenting papers and chairing sessions. She was Plenary Speaker 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&ENVIRONMENT (EE’10), held by the University of Cambridge, UK, February 23-25, 2010, in the 4th IASME/WSEAS International Conference on ENERGY&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. She is very proud by her over 30 papers published in the WSEAS Conferences Books and in the WSEAS TRANSACTIONS ON ENVIRONMENT AND DEVELOPMENT, WSEAS TRANSACTIONS ON POWER SYSTEMS, WSEAS TRANSACTIONS ON CIRCUITS AND SYSTEMS and WSEAS TRANSACTIONS ON ADVANCES IN ENGINEERING EDUCATION.