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RESEARCH PRODUCT
Thermal Stability of a DC/DC Converter with Inductor in Partial Saturation
Giuseppe LulloD. ScireGianpaolo Vitalesubject
DC-DC power converters Inductors Nonlinear circuits Saturation magnetizationMaterials scienceThermal resistance020208 electrical & electronic engineeringSaturation magnetization.02 engineering and technologyConvertersInductorSettore ING-INF/01 - ElettronicaNonlinear circuitsNonlinear systemControl and Systems EngineeringControl theoryBoost converterDC-DC power converters0202 electrical engineering electronic engineering information engineeringInductorsSkin effectElectrical and Electronic EngineeringRealization (systems)Saturation (magnetic)description
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 article, this issue is studied by a mathematical model able to represent both the inductor nonlinearity 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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-09-01 |