o:5861 Doprinos u otklanjanju smetnji na merenje frekvencije trofaznog ac generatora Contribution in elimination of interference for frequency measurement of three-phase ac generator sr Izvod: Poslednjih godina se posebna pažnja posvećuje razvoju obnovljivih izvora energije. Uzimajući u obzir ovaj trend razvoja kao deo brzog razvoja industrije, predlaže se doprinos u radu uređaja za merenje frekvencije trofaznog vetrogeneratora u cilju smanjenja uticaja smetnji na merenje frekvencije. Prezentovano je detaljno rešenje samog uređaja za merenje frekvencije trofaznog AC generatora iz opsega 1-100 Hz. Ovaj uređaj koristi međufazni naizmenični napon i na svom izlazu daje jednosmerni napon u opsegu 0-5V DC, koji je proporcionalan frekvenciji 1-100 Hz i galvanski je izolovan od ulaznog signala. Tako dobijen izlazni signal je pogodan za dalju obradu u distribuiranim sistemima upravljanja. Smetnje koje nastaju u samom generatoru ili okolnim uređajima se mogu superponirati izlaznom naponu generatora i time mogu da značajno umanje tačnost merenja. Zato se u radu predlaže dodatno niskofrekventno filtriranje signala čime bi se značajno smanjila moguća greška merenja periode ulaznog signala. Abstract: In recent years, a special attention has been paid to the development of renewable energy sources. Taking into account this development trend as a part of the rapid industry development, it is proposed to contribute to the operation of devices for measuring the frequency of three-phase wind turbines in order to reduce the impact of interference on frequency measurement. It presents a detailed solution of a device for measuring the frequency of a three-phase AC generator in the range of 1-100 Hz. The device uses an intermediate phase AC voltage which at its output gives a DC voltage in the range 0-5V DC that is proportional to the frequency 1-100 Hz and is galvanically isolated from the input signal. The output signal thus obtained is suitable for further processing in distributed control systems. Interferences occurring in the generator itself or surrounding devices can be superimposed on the generator output voltage and thus can significantly reduce the measurement accuracy. Therefore, the paper proposes an additional low-frequency signal filtering, which would significantly reduce the possible error of measuring period of the input signal. Ključne reči: merKljučne reči: merenje, frekvencija, vetrogenerator.enjefrekvencijavetrogenerator, Keywords: measurement, frequency, wind generator. 91552100 136958729 1552101 0351-0212 2024-10-29T01:46:12.261Z 44 no 46 Ivana Ranđelović Elektronski fakultet u Nišu, Niš 110045449 0009-0005-9126-7396 2022 46 Miroljub Pešić Elektronski fakultet u Nišu, Niš 106117385 0009-0006-1909-6972 2022 46 Viša Tasić Institut za rudarstvo i metalurgiju Bor 54602505 0000-0001-6710-6529 2022 46 Marijana Pavlov-Kagadejev Institut za rudarstvo i metalurgiju Bor 79387145 0000-0003-1090-6351 2022 46 Vladan Miljković Institut za rudarstvo i metalurgiju Bor 110084873 0000-0002-5517-1574 2022 application/pdf 1719727 https://unilib.phaidrabg.rs/o:5861 no yes 16 70 669 92000001 71A03 Bakar: rudarsko topioničarski basen 47 1 13 18 2022