Electrical engineering

20210508-02
Advanced computation of the field apparent resistivity of the soil for driven-rod electrodes
Slavko Vujević, Tonći Modrić, Ivan Krolo

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In this paper, analytical formulas for the computation of the field apparent resistivity of the soil for driven-rod electrodes are presented. General four driven-rod electrode array configuration and its special cases: general ...  read more

20210508-01
Power monitoring system for current up to 20A
Dejan S. Stevanovic, Miona V. Andrejevic Stosovic, Milan M. Savic

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In this paper we proposed a system for AC current monitoring in home appliances, up to 20A. System also measures voltage, line frequency, power factor, active power, and total imported active energy. The accuracy of the realized ...  read more

20210508-03
Different AC magnetic field shielding procedures
Teodora G. Gavrilov, Karolina K. Kasas-Lazetic, Miroslav A. Prsa

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In this paper, the analysis of magnetic field distribution of shielded copper conductor with the current of 100 A RMS is presented. The impact of various shielding materials (copper, aluminium and zinc-coated iron tin) and ...  read more

20210508-04
Finite element analysis of inter-turn fault in a brushless direct current drive
Jawad Faiz, Ahmad Jafari

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The key problems in condition monitoring and fault diagnosing brushless direct current motors (BLDCs) include: 1) establishing a model that takes into account the influence of various nonlinear and complex factors to reveal ...  read more

20210508-05
Computer integrated laboratory for teaching electronics at undergraduate level
Marko A. Dimitrijević

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There are several approaches to implementation of computer assisted laboratory for basic electronic education. Trying to keep the advantages of the available concepts such as classical individual work, remote access laboratory, ...  read more

20210304-02
EEG classification for BCI using genetic algorithm and k-fold cross validation
Ivaylo E. Ivaylov

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Brain-Computer Interfaces (BCIs) have become popular in the last years and are used for several applications in human-computer interfaces including attention and workload measures as well as for direct control of objects. ...  read more

20210304-03
Impact of an energy conservation measure on reducing CO2 emissions
Mila Ilieva-Obretenova

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The study uses saved energy (the expected annual economy of electrical energy) to describe the impact of energy conservation measure (М1) – Reconstruction of the electric drive and control of a basic hoisting machine, ...  read more

20210102-02
Influence of the middle pole shape on the force characteristic of an actuator with Т-shaped armature
Ivan Hadzhiev, Dian Malamov, Iosko Balabozov, Ivan Yatchev

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In the paper, a study of the influence of the middle pole shape on the static force characteristic of a direct-current solenoid actuator with T-shaped armature is presented. For this purpose, computer models of the actuator ...  read more

20200912-03
Physical modeling of wind energy conversion systems in laboratory conditions
Zahari Zarkov

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The article presents the experience of the author in the area of the physical modeling of wind energy conversion systems (WECS) with different types of electric generators and electronic converters. A small power test benches ...  read more

20190910-02
Overall robust optimization approach for electron beam induced grafting process
Lilyana Koleva, Elena Koleva, Monica R. Nemtanu, Mirela Braşoveanu

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This paper presents the implementation of the overall desirability function – the overall robust optimization approach – for multi-criteria parameter optimization in the robust engineering case, based on estimated models ...  read more