Modeling the Influence of Thermal Phenomena in Inductors and Capacitors on the Characteristics of the SEPIC Converter

Detka, Kalina; Górecki, Krzysztof; Downar-Zapolski, Michał

doi:10.3390/electronics13193861

Open AccessArticle

Modeling the Influence of Thermal Phenomena in Inductors and Capacitors on the Characteristics of the SEPIC Converter

by

Kalina Detka

^1,*,

Krzysztof Górecki

¹

and

Michał Downar-Zapolski

²

¹

Department of Power Electronics, Gdynia Maritime University, Morska 81-87, 81-225 Gdynia, Poland

²

PITRADWAR S.A., Aleja Generała Józefa Hallera 233A, 80-502 Gdańsk, Poland

^*

Author to whom correspondence should be addressed.

Electronics 2024, 13(19), 3861; https://doi.org/10.3390/electronics13193861

Submission received: 29 August 2024 / Revised: 24 September 2024 / Accepted: 26 September 2024 / Published: 29 September 2024

(This article belongs to the Special Issue Efficient and Reliable DC–DC Converters and Related Industrial Electronics)

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Abstract

The paper presents the results of measurements and calculations of the SEPIC converter characteristics, taking into account thermal phenomena in semiconductor devices and passive elements. Compact electrothermal models of the MOSFET transistor, diode, capacitor, and inductor are proposed. Parasitic phenomena are also included in these models. The form of the developed models and the method of determining the values of their parameters are presented. The correctness of the formulated models was verified experimentally. Calculations and measurements of the characteristics of SEPIC converters containing inductors with ferromagnetic cores made of different materials were carried out. The obtained results of the investigations are discussed, and the range of applicability of the formulated models is described. It was shown that, at the considered operating conditions at an ambient temperature equal to 22 °C, the temperature of capacitors can exceed 40 °C, whereas the temperatures of inductors can even reach 50 °C.

Keywords: SEPIC DC-DC converter; electrothermal models; modeling; measurements; non-isothermal characteristics; power MOSFETs

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MDPI and ACS Style

Detka, K.; Górecki, K.; Downar-Zapolski, M. Modeling the Influence of Thermal Phenomena in Inductors and Capacitors on the Characteristics of the SEPIC Converter. Electronics 2024, 13, 3861. https://doi.org/10.3390/electronics13193861

AMA Style

Detka K, Górecki K, Downar-Zapolski M. Modeling the Influence of Thermal Phenomena in Inductors and Capacitors on the Characteristics of the SEPIC Converter. Electronics. 2024; 13(19):3861. https://doi.org/10.3390/electronics13193861

Chicago/Turabian Style

Detka, Kalina, Krzysztof Górecki, and Michał Downar-Zapolski. 2024. "Modeling the Influence of Thermal Phenomena in Inductors and Capacitors on the Characteristics of the SEPIC Converter" Electronics 13, no. 19: 3861. https://doi.org/10.3390/electronics13193861

APA Style

Detka, K., Górecki, K., & Downar-Zapolski, M. (2024). Modeling the Influence of Thermal Phenomena in Inductors and Capacitors on the Characteristics of the SEPIC Converter. Electronics, 13(19), 3861. https://doi.org/10.3390/electronics13193861

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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Modeling the Influence of Thermal Phenomena in Inductors and Capacitors on the Characteristics of the SEPIC Converter

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