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TitlePerformance comparison of a typical nonlinear load connected to Ac and Dc power grids
Author(s)Sousa, Tiago José Cunha
Monteiro, Vítor Duarte Fernandes
Pinto, J. G.
Afonso, João L.
KeywordsDc grids
Dc smart homes
Nonlinear loads
Issue date2019
JournalLecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering (LNICST)
CitationTiago J. C. Sousa, Vítor Monteiro, J. G. Pinto, João L. Afonso, “Performance Comparison of a Typical Nonlinear Load Connected to ac and dc Power Grids”, in Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST, vol. 269 LNICST, pp. 54–63, 2019. DOI: 10.1007/978-3-030-12950-7_5.
Abstract(s)This paper presents a performance comparison of a typical nonlinear load used in domestic appliances (electronic load), when supplied by an ac and a dc voltage of the same rms value. The performance of the nonlinear load towards its connection to ac and dc power grids is accomplished in terms of the waveforms which are registered in the consumed current, internal dc-link voltage and output voltage. A simulation model was developed using realistic database models of the power semiconductors comprising a nonlinear load with input ac-dc converter, so that the efficiency can be calculated and compared for three distinct cases: (1) load supplied by an ac voltage; (2) load supplied by a dc voltage; (3) load without the input ac-dc converter supplied by a dc voltage. Thus, besides the comparison between the ac and dc power grids supplying the same nonlinear load (cases 1 and 2), a third case is considered, which consists of removing the input ac-dc converter (eliminating needless components of the nonlinear load when supplied by a dc voltage). The obtained results show that supplying nonlinear loads with dc power grids is advantageous in relation to the ac power grid, and therefore it can be beneficial to adapt nonlinear loads to be powered by dc power grids.
TypeConference paper
Publisher version
AccessOpen access
Appears in Collections:CAlg - Artigos em livros de atas/Papers in proceedings

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