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Aida Bulucea  - - - 
Top co-authors
M.A. Rosen

279 shared publications

Faculty of Engineering and Applied Science, University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, ON L1G 0C5, Canada

Doru A. Nicola

5 shared publications

University of Craiova, Faculty of Electrical Engineering, Craiova 200440, Romania

Sonia Degeratu

3 shared publications

Daniel C. Cismaru

1 shared publications

Faculty of Electrical Engineering, University of Craiova, Craiova 200440, Romania

Publication Record
Distribution of Articles published per year 
Total number of journals
published in
Article 4 Reads 2 Citations Sustainability Aspects of Energy Conversion in Modern High-Speed Trains with Traction Induction Motors Marc A. Rosen, Doru A. Nicola, Cornelia A. Bulucea, Daniel C... Published: 20 March 2015
Sustainability, doi: 10.3390/su7033441
DOI See at publisher website ABS Show/hide abstract
Some aspects are illustrated of energy conversion processes during the operation of electric railway vehicles with traction induction motors, in order to support transport systems’ sustainability. Increasing efforts are being expended to enhance the sustainability of transportation technologies and systems. Since electric drive systems are used with variable voltage variable frequency (VVVF) inverters and traction induction motors, these machines with appropriate controls can realize both traction and electric braking regimes for electric traction vehicles. In line with this idea, this paper addresses the operation sustainability of electric railway vehicles highlighting the chain of interactions among the main electric equipment on an electrically driven railway system supplied from an a.c. contact line: The contact line-side converter, the machine-side converter and the traction induction motor. The paper supports the findings that electric traction drive systems using induction motors fed by network-side converters and VVVF inverters enhance the sustainable operation of railway trains.
Article 0 Reads 5 Citations Estimating Solar Irradiation Absorbed by Photovoltaic Panels with Low Concentration Located in Craiova, Romania Ionel Alboteanu, Sonia Degeratu, Cornelia Bulucea Published: 04 March 2015
Sustainability, doi: 10.3390/su7032644
DOI See at publisher website ABS Show/hide abstract
Solar irradiation is one of the important parameters that should be taken into consideration for the design and utilization of a photovoltaic system. Usually, the input parameters of a photovoltaic system are solar irradiation, the ambient environment temperature and the wind speed, and as a consequence most photovoltaic systems are equipped with sensors for measuring these parameters. This paper presents several mathematical models for solar irradiation assessment. The starting point is represented by the mathematical model of extraterrestrial irradiation, and resulting finally in the model for solar irradiation, absorbed by a low concentration photovoltaic panel. These estimating models of solar irradiation have been particularized for the Craiova, Romania, and have been verified through numerical simulation. Regarding terrestrial solar irradiation, four mathematical models have been adopted, namely Adnot, Haurwitz, Kasten and Empirical (EIM). Of these, the most appropriate for the Craiova location were the models Adnot and Empirical. Consequently, for the calculation of the solar irradiation absorbed by the photovoltaic (PV) panels with low concentration, these models have been taken into consideration. In this study, a comparative analysis was also carried out with respect to the solar irradiation absorbed by the PV panels without concentration and those with collectedness of the solar radiation. This analysis was based on the results of numerical simulation and experimental tests.