Slobodan Bjelic

Work place: Faculty of Technical Sciences, Kosovska Mitrovica, Serbia

E-mail: slobodanbjelić


Research Interests: Engineering


Slobodan Bjelić: Professor of electrical engineering at Faculty of Technical Sciences in Kosovska Mitrovica, Serbia

Slobodan Bjelić received  Ph.D. degree in 1982, field of interest: Electrical Engineering, Computer Science, Protective Relays, Electrical Installation and Illumination, Electrical Power Converters. Full -time professor at Faculty of Technical Sciences in Kosovska Mitrovica, University of Pristina. He is author or coauthor of 8 textbooks and over 180 scientific and professional papers published in international and Serbian journals.

Author Articles
Calculation of Overvoltage and Estimation of Power Transformer’s Behavior When Activating the Reactors

By Slobodan Bjelic Zorica Bogicevic

DOI:, Pub. Date: 8 Nov. 2014

The document illustrates the methods and algorithms for calculation of overvoltage at the power transformer excerpts during the activation of inductive consumer to secondary transformer. Characteristic stages are activation of the primary phase and followed by two other phases. The new specific condition occurs during the activation of each phase which is presented by alternative electric circuit and simplified equivalent scheme that is used to calculate the values and evaluate overvoltage. For selected parameters of the transformer and inductive loads, the simulation is performed with chosen MATLAB software package.

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Computer Simulation of Theoretical Model of Electromagnetic Transient Processes in Power Transformers

By Slobodan Bjelic Zorica Bogicevic

DOI:, Pub. Date: 8 Dec. 2013

The paper is presenting theoretical analytical model and computer simulation of electromagnetic transient process in a transformer. Transformer parameters in a selected transitional process have been analyzed. Theoretical model refers to an energetic transformer with concentrated parameters with consideration of parameters of mutual inductance M. Simulation was performed on a personal computer using the software program MATLAB SIMULINK. The computer simulation confirmed the possibility of transitional process analysis in transformer’s windings with concentrated parameters.

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Other Articles