Advanced Ferromagnetic Materials in Power Electronic Converters: A State of the Art

Rodriguez-Sotelo, Daniela; Rodriguez-Licea, Martin A.; Soriano-Sánchez, Allan G.; Espinosa-Calderón, Alejandro; Pérez-Pinal, Francisco J.

doi:10.1109/access.2020.2982161

Cited by 18 publications

(9 citation statements)

References 105 publications

(156 reference statements)

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“…Without matter, the core losses model chosen by the magnetic component designer will be based on those three primary losses; core loss models will be detailed in the next section. Besides, core losses depend on the core’s geometry and the core intrinsic properties’ such as permeability, flux density, Curie temperature, among others [ 69 , 70 , 71 ]. Many methods and models have been developed; all of them have the predominant interest in studying, analyzing and understanding those kinds of losses to improve the magnetic components’ performance.…”

Section: Losses In Magnetic Componentsmentioning

confidence: 99%

Power Losses Models for Magnetic Cores: A Review

et al. 2022

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In power electronics, magnetic components are fundamental, and, unfortunately, represent one of the greatest challenges for designers because they are some of the components that lead the opposition to miniaturization and the main source of losses (both electrical and thermal). The use of ferromagnetic materials as substitutes for ferrite, in the core of magnetic components, has been proposed as a solution to this problem, and with them, a new perspective and methodology in the calculation of power losses open the way to new design proposals and challenges to overcome. Achieving a core losses model that combines all the parameters (electric, magnetic, thermal) needed in power electronic applications is a challenge. The main objective of this work is to position the reader in state-of-the-art for core losses models. This last provides, in one source, tools and techniques to develop magnetic solutions towards miniaturization applications. Details about new proposals, materials used, design steps, software tools, and miniaturization examples are provided.

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Section: Losses In Magnetic Componentsmentioning

confidence: 99%

Power Losses Models for Magnetic Cores: A Review

et al. 2022

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“…BC at bottom of supporter plate : T = T f loor (t) (4) in which h conv refers to the natural convection coefficient and ε is an average surface emissivity used for the external surfaces of the transformer. The natural convection coefficient, h conv , was estimated using the widely known correlations of McAdams [29] and Churchill and Chu [30] as described below, whereas a nominal value of the average emissivity of the external surfaces of ε = 0.8 was selected based on the literature [16,21].…”

Section: Constitutive Equations and Boundary Conditionsmentioning

confidence: 99%

“…These materials allow improving the magnetic performance of the transformer and their efficient operation at specific voltages [ 1 ]. The literature regarding these materials, including detailed reviews of available soft magnetic materials, is not scarce [ 4 , 5 , 6 , 7 , 8 ]. Among them, Rodríguez-Sotelo et al [ 4 ] presented an extensive state-of-the-art review on advanced ferromagnetic materials in power electronic converters.…”

Section: Introductionmentioning

confidence: 99%

“…The literature regarding these materials, including detailed reviews of available soft magnetic materials, is not scarce [ 4 , 5 , 6 , 7 , 8 ]. Among them, Rodríguez-Sotelo et al [ 4 ] presented an extensive state-of-the-art review on advanced ferromagnetic materials in power electronic converters. They presented both qualitative and quantitative data, which allows comparing the principal characteristics of these materials.…”

Section: Introductionmentioning

confidence: 99%

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Numerical and Experimental Evaluation and Heat Transfer Characteristics of a Soft Magnetic Transformer Built from Laminated Steel Plates

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García-Hernando

et al. 2021

Sensors

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The present work evaluates, both experimentally and numerically, the heat transfer characteristics of a 5 kW three-phase transformer built from laminated steel sheets. The transformer is operated at different powers, and its temperature distribution is monitored using 108 thermocouples. The experimental measurements are used firstly to determine the heat dissipated at the core and the windings of the transformer. This information is used as an input for a finite element numerical model, which evaluates the heat transfer characteristics of the transformer. The model proposed in this work simply solves the diffusion equation inside the transformer, accounting for the anisotropic thermal conductivity of the different components of the transformer, together with well-known correlations at its boundaries. The results reveal that the proposed numerical model can correctly reproduce the maximum temperature, the temperature distribution, and the time-evolution of the temperature at specific points of the transformer measured during the experimental campaign. These results are of great use for the subsequent development of transformers of the same type in lab-scale or industrial-scale size and reveal the applicability of simplified numerical models to accurately predict the heat transfer characteristics of this kind of transformers.

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“…The fabrication and integration of sub-millimeter magnetic materials into predefined circuits is of major importance for portable devices used in telecommunications, automotive, biomedical, and space applications. For instance, inductors are soft magnetic elements widespread in daily life objects such as cell phones, where they act as passive filters to properly extract the signal of interest from the electromagnetic noise, or in chargers as passive elements for power electronic converters . Furthermore, the expanding market of integrated sensors/actuators requires miniaturized power supplies.…”

Section: Introductionmentioning

confidence: 99%