Прегледај по Аутор "Lale, Srdjan"

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    Analysis of single-phase PLL with novel two-phase generator for gridconnected converters
    (2011) Lale, Srdjan; Lubura, Slobodan; Šoja, Milomir; Ikić. Marko
    It is very important for proper work of gridconnected converters to have accurate detection of phase angle, frequency and amplitude of grid voltage. Estimation of these grid parameters can be achieved using PLL (phase locked loop) based on SRF (synchronous reference frame) theory. This PLL should have robustness against noise and offset introduced by measurement and data conversion. This paper proposes an improved PLL alorithm that has excellent noise and offset rejection property. The main part of the proposed PLL is a novel two-phase generator which is used to obtain two quadrature signals for SRF block and PI regulator in closed control loop.
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    Renewable Energy-Powered Traffic Signalization as a Step to Carbon-Neutral Cities (The Case ofWestern Balkans)
    (MDPI, 2023) Vukovic, Marko; Miskic, Miroslav; Kastelan, Ivan; Lale, Srdjan; Forcan, Miodrag; Vukovic, Goran; Ikic, Marko
    Global warming and its negative effect on the environment pose a great threat to the future of mankind. In order to overcome these challenges, EU countries have set the target of becoming climate neutral by 2050, a path defined through the policies of the European Green Deal. The Republic of Serbia and Bosnia and Herzegovina also agreed upon the same goal through the endorsement of the Green Agenda for the Western Balkans. One of the means to achieve this goal is by increasing the share of renewable energy sources. In this paper, we analyze the feasibility, challenges, and potential issues of substituting conventional traffic light signalization with signalization based on renewable energy sources on a national scale. An ad hoc questionnaire was used to collect data from representatives of most of the municipalities in the Republic of Srpska entity in Bosnia and Herzegovina and representatives of the city of Novi Sad in Serbia. In the city of Novi Sad, personal interviews were also carried out to collect additional information. The results of this research show that the implementation of solar-powered traffic lights is economically and environmentally viable. These results will provide the basis for understanding the benefits and challenges in the case of the application of traffic light signalization based on renewable energy sources.