Marko DavidovicUniversity of Belgrade · Chair of Power Converters And Drives
Marko Davidovic
Master of Electrical Engineering and Computer Engineering
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17
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Introduction
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November 2013 - present
Publications
Publications (17)
Comparison of conventional (usually high-pressure sodium (HPS)) and LED luminaires in street/road lighting is not often based on photometrically equivalent lighting solutions and/or correct economic analysis, which may lead to either overestimation or underestimation of savings of any kind. Therefore, this paper presents a correct methodology for t...
Узрок великог броја пожара у стамбеним, пословним и јавним објектима су кварови на електричним инсталацијама. Старе, неодржаване, оштећене и нестручно изведене електричне инсталације представљају скривену опасност која може изазвати пожар. Последњих година у свету постоји тренд истраживања начина настанка почетног пожара услед кварова у електричној...
The paper considers two power quality issues: voltage distortion and voltage drop along the pole lines of different LED street (road) lighting installations. The research includes three parts: (1) development of a novel model and the corresponding software for calculating voltage harmonics in the three-phase LED street lighting installations, where...
The previously developed new method for detecting poor electrical contacts in low-voltage electrical installations characterised by the TN protection system has been validated by field measurements performed in residential buildings. The method was developed by the establishment of a correlation between the measured line to earth and line to neutra...
During the lifelong maintenance of low-voltage electrical installations in any facility special attention must be given to fire-causing failures, which cannot be detected by conventional protection devices (miniature circuit breakers, fuse-links, residual current devices, etc.). Such failures are most often caused by poor electrical contacts. Inter...
The previously developed new method for detecting poor electrical contacts in low-voltage electrical installations characterised by the TN protection system has been validated by field measurements performed in residential buildings. The method was developed by the establishment of a correlation between the measured line to earth and line to neutra...
During the lifelong maintenance of low-voltage electrical installations in any facility special attention must be given to fire-causing failures, which cannot be detected by conventional protection devices (miniature circuit breakers, fuse-links, residual current devices, etc.). Such failures are most often caused by poor electrical contacts. Inter...
На основу великог броја изведених експеримената у којима је анализиран утицај лоших електричних контаката на настанак „врелих“ тачака на шуко-утичницама, као и на основу података добијених из великог броја стручних налаза о верификацији квалитета нисконапонских електричних инсталација у индустријским и административним објектима (које је израдила Л...
The purpose of this study was to initiate broad research aimed to establish the preferred color of light of LEDs from a driver’s point of view. Two street lighting installations (one with 3000 K and the other with 4000 K LEDs) were evaluated both objectively and subjectively. The objective evaluation, realized using a CCD camera, included detection...
The subjective impressions of pedestrians are necessary in order to decide on the appropriate colour of light to be used for street lighting. Therefore, a pilot project aimed to compare subjective evaluations of the sidewalk illumination under two street lighting installations, realised by LEDs of 3000 K (warm white) and 4000 K (neutral white), was...
Извршена је анализа домаћих и иностраних статистичких података који се односи на кварове у електричним инсталацијама који могу да буду узрок пожара. Анализирани су најзначајнији кварови са аспекта проблематике настанка пожара на нисконапонским електричним инсталацијама. За сваки од кварова (електрични лук, лош електрични контакт, загревање услед пр...
Лош контакт у нисконапонској електричној инсталацији може се појавити како у разводном орману, тако и било где у струјном колу (на шуко-утикачу или шуко-утичници, аутоматском прекидачу или осигурачу са топљивим уметком, редним стезаљкама, разводним кутијама, прекидачима, као и у пријемнику електричне енергије). Уколико се овакав квар на време не пр...
By using a specially designed apparatus, the impact of poor contacts caused by an incomplete overlap of a copper conductor and the corresponding terminal of the low-voltage electrical equipment on the contact temperature was tested. The poor contact was simulated using the electrodes of different cross-sectional areas, exposed to different loads. T...
Услед некомплетнe регулативе која се односи на обављање периодичних прегледа и испитивања нисконапонске електричне инсталације у зградама, као превентиве од настанка пожара и електричног удара, у раду је представљена унапређена методологија за верификацију квалитета нисконапонских електричних инсталација која је проистекла не само из важећих правил...
У раду је представљена проблематика детекције кварова на нисконапонским електричним инсталацијама који се не могу открити прописаним периодичним верификацијама, нити их класичне заштитне компоненте могу препознати. Уз то, на местима настанка оваквих ,,невидљивих“ кварова стварају се услови за настанак пожара. У првом делу рада су представљене класи...
Fire hazard due to the use of poor quality electrical installation components found in the Serbian free market Abstract: The reliability of low-voltage electrical installations during the exploitation period mostly depends on the approach to its realization, and maintenance, as well as of quality of each installed component. For creating initial co...
Fire hazard due to the use of poor quality electrical installation components found in the Serbian free market Abstract: The reliability of low-voltage electrical installations during the exploitation period mostly depends on the approach to its realization, and maintenance, as well as of quality of each installed component. For creating initial co...