Inductors operated in quasi saturation in DC/DC converters allow reduction of the core size and realization costs; on the other hand, they imply an increase of dissipated power that can jeopardize the thermal stability of the converter. In this paper, this issue is studied by a mathematical model able to represent both the inductor non-linearity and its temperature dependence. The main losses, such as ohmic, skin effect and magnetic, are taken into account in the model. The inductor is characterized by a polynomial curve whose parameters are a function of the temperature. Finally, the whole converter is modeled and simulation results, obtained on a boost converter, are compared with experimental measurements showing that the thermal behavior is reproduced in detail.

Gianpaolo Vitale, Giuseppe Lullo, & Daniele Scirè (2020). Thermal Stability of a DC/DC Converter with Inductor in Partial Saturation. IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 68(9), 7985-7995 [10.1109/TIE.2020.3014580].

Thermal Stability of a DC/DC Converter with Inductor in Partial Saturation

Gianpaolo Vitale;Giuseppe Lullo;Daniele Scirè
2020

Abstract

Inductors operated in quasi saturation in DC/DC converters allow reduction of the core size and realization costs; on the other hand, they imply an increase of dissipated power that can jeopardize the thermal stability of the converter. In this paper, this issue is studied by a mathematical model able to represent both the inductor non-linearity and its temperature dependence. The main losses, such as ohmic, skin effect and magnetic, are taken into account in the model. The inductor is characterized by a polynomial curve whose parameters are a function of the temperature. Finally, the whole converter is modeled and simulation results, obtained on a boost converter, are compared with experimental measurements showing that the thermal behavior is reproduced in detail.
Settore ING-INF/01 - Elettronica
Gianpaolo Vitale, Giuseppe Lullo, & Daniele Scirè (2020). Thermal Stability of a DC/DC Converter with Inductor in Partial Saturation. IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 68(9), 7985-7995 [10.1109/TIE.2020.3014580].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10447/430019
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