Sistem besprekidnog napajanja snage 120 kVA u termoelektrani Kostolac A - invertori u paralelnom radu

Nikola Mirković; Blagota Jovanović; Srpski; Srpski; Srpski; Anđelka Mirković; Zlatko Simeunović; Dejan Žukovski

doi:10.5937/zeint35-63145

Nikola Mirković University of Belgrade, The Nikola Tesla Institue of electrical Engineering https://orcid.org/0000-0003-0018-4682
Blagota Jovanović University of Belgrade, The Nikola Tesla Institue of electrical Engineering https://orcid.org/0000-0002-7774-5487
Srpski University of Belgrade, The Nikola Tesla Institue of electrical Engineering https://orcid.org/0000-0001-7064-976X
Srpski University of Belgrade, The Nikola Tesla Institue of electrical Engineering
Srpski University of Belgrade, The Nikola Tesla Institue of electrical Engineering
Anđelka Mirković Srpski https://orcid.org/0009-0004-4934-2746
Zlatko Simeunović Srpski
Dejan Žukovski Srpski

DOI: https://doi.org/10.5937/zeint35-63145

Keywords: Srpski

Abstract

Uninterruptible Power Supply (UPS) systems are of vital importance for many consumers in complex facilities such as a thermal power plant. This paper presents a solution for the parallel operation of two inverters with nominal powers of 60 kVA, based on controlling the nature of the inverters. All challenges and technical details of parallelizing the two inverters are presented, from uniform load sharing and communication to establishing a "master-slave" relationship, and even the transient phenomena during the failure of one of the inverters. Detailed simulations of all relevant events and phenomena are simulated using the Plecs software tool. In accordance with the calculations, the inverters were developed, and experimental results of the operation of these inverters under simulated operational conditions are also included.

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