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Zbornik radova, Elektrotehnički institut "Nikola Tesla"
2016, br. 26, str. 23-52
jezik rada: srpski
vrsta rada: stručni članak
doi:10.5937/zeint26-12280

Creative Commons License 4.0
Termički izazovi u projektovanju invertora za industrijske namene
Univerzitet u Beogradu, Elektrotehnički institut 'Nikola Tesla', Beograd

e-adresa: predrag.ninkovic@jeent.org

Sažetak

U ovom radu je prikazana procedura termičkog proračuna i izbora topologije i komponenata nestandardnog monofaznog invertora za industrijske namene, sa velikim stepenom preopterećenja, sa prirodnim hlađenjem i širokim ulaznim opsegom napona baterije. Prikazani su razlozi zbog kojih je standardno rešenje potpuno neprihvatljivo, kao i motivi za izbor novog rešenja sa četvorokanalnim predregulatorom podizačem napona i invertorskim mostom na povišenom naponu jednosmernog kola. Prikazan je proračun gubitaka u poluprovodnicima, svi elementi proračuna su podržani odgovarajućim poređenjem a napravljen je i detaljan prikaz faktora koji utiču na konstrukciju magnetnih komponenata. Na osnovu svega prikazanog, realizovan je invertor snage 20kVA koji je isporučen i povezan u termoelektrani gde napaja računarski sistem za upravljanje jednim blokom.

Ključne reči

industrijski invertor; stepen iskorišćenja; termički proračun; podizač napona

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