Influence of Power Losses in the Inductor Core on Characteristics of Selected DC–DC Converters

The paper presents the results of a computer simulation illustrating the influence of power losses in the core of an inductor based on the characteristics of buck and boost converters. In the computations, the authors’ model of power losses in the core is used. Correctness of this model is...

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Main Authors: Krzysztof Górecki, Kalina Detka
Format: Article
Language:English
Published: MDPI AG 2019-05-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/12/10/1991
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author Krzysztof Górecki
Kalina Detka
author_facet Krzysztof Górecki
Kalina Detka
author_sort Krzysztof Górecki
collection DOAJ
description The paper presents the results of a computer simulation illustrating the influence of power losses in the core of an inductor based on the characteristics of buck and boost converters. In the computations, the authors’ model of power losses in the core is used. Correctness of this model is verified experimentally for three different magnetic materials. Computations are performed with the use of this model and the Excel software for inductors including cores made of ferrite, powdered iron, and nanocrystalline material in a wide range of load resistance, as well as input voltage of both the considered converters operating at different values of switching frequency. The obtained computation results show that power losses in the inductor core and watt-hour efficiency of converters strongly depend on the material used to make this core, in addition to the input voltage and parameters of the control signal and load resistance of the considered converters. The obtained results of watt-hour efficiency of the considered direct current (DC)−DC converters show that it changes up to 30 times in the considered ranges of the mentioned factors. In turn, in the same operating conditions, values of power losses in the considered cores change from a fraction of a watt to tens of watts. The paper also considers the issue of which material should be used to construct the inductor core in order to obtain the highest value of watt-hour efficiency at selected operation conditions of the considered converters.
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spelling doaj.art-d5f8a2bafa6147129a0144fa3b2b5c992022-12-22T04:28:27ZengMDPI AGEnergies1996-10732019-05-011210199110.3390/en12101991en12101991Influence of Power Losses in the Inductor Core on Characteristics of Selected DC–DC ConvertersKrzysztof Górecki0Kalina Detka1Department of Marine Electronics, Gdynia Maritime University, Morska 83, 81-225 Gdynia, PolandDepartment of Marine Electronics, Gdynia Maritime University, Morska 83, 81-225 Gdynia, PolandThe paper presents the results of a computer simulation illustrating the influence of power losses in the core of an inductor based on the characteristics of buck and boost converters. In the computations, the authors’ model of power losses in the core is used. Correctness of this model is verified experimentally for three different magnetic materials. Computations are performed with the use of this model and the Excel software for inductors including cores made of ferrite, powdered iron, and nanocrystalline material in a wide range of load resistance, as well as input voltage of both the considered converters operating at different values of switching frequency. The obtained computation results show that power losses in the inductor core and watt-hour efficiency of converters strongly depend on the material used to make this core, in addition to the input voltage and parameters of the control signal and load resistance of the considered converters. The obtained results of watt-hour efficiency of the considered direct current (DC)−DC converters show that it changes up to 30 times in the considered ranges of the mentioned factors. In turn, in the same operating conditions, values of power losses in the considered cores change from a fraction of a watt to tens of watts. The paper also considers the issue of which material should be used to construct the inductor core in order to obtain the highest value of watt-hour efficiency at selected operation conditions of the considered converters.https://www.mdpi.com/1996-1073/12/10/1991DC–DC convertersferromagnetic coresmodelingpower losses
spellingShingle Krzysztof Górecki
Kalina Detka
Influence of Power Losses in the Inductor Core on Characteristics of Selected DC–DC Converters
Energies
DC–DC converters
ferromagnetic cores
modeling
power losses
title Influence of Power Losses in the Inductor Core on Characteristics of Selected DC–DC Converters
title_full Influence of Power Losses in the Inductor Core on Characteristics of Selected DC–DC Converters
title_fullStr Influence of Power Losses in the Inductor Core on Characteristics of Selected DC–DC Converters
title_full_unstemmed Influence of Power Losses in the Inductor Core on Characteristics of Selected DC–DC Converters
title_short Influence of Power Losses in the Inductor Core on Characteristics of Selected DC–DC Converters
title_sort influence of power losses in the inductor core on characteristics of selected dc dc converters
topic DC–DC converters
ferromagnetic cores
modeling
power losses
url https://www.mdpi.com/1996-1073/12/10/1991
work_keys_str_mv AT krzysztofgorecki influenceofpowerlossesintheinductorcoreoncharacteristicsofselecteddcdcconverters
AT kalinadetka influenceofpowerlossesintheinductorcoreoncharacteristicsofselecteddcdcconverters