Thermal Comparison of Planar Versus Conventional Transformers Used in LLC Resonant Converters

Shafaei, Rouhollah; Saket, Mohammad Ali; Ordonez, Martin

doi:10.1109/ecce.2018.8557894

Cited by 13 publications

(5 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Hot spots inside windings or magnetic cores cannot be considered. To address this issue, the more complex model can be used in 2D [35][36][37], in 3D [24,38], or with FEA-based modeling [39][40][41].…”

Section: Discussionmentioning

confidence: 99%

Thermal Resistance Modeling for the Optimal Design of EE and E/PLT Core-Based Planar Magnetics

Bakri,

Margueron,

Le Moigne

et al. 2024

Energies

View full text Add to dashboard Cite

With the integration of power electronic converters and components, an accurate thermal design becomes essential. Hence, precise thermal models for components are needed for their optimal design. This paper focuses on the development of an analytical model for the design of thermal resistance of planar magnetic cores (PMC). Based on computational fluid dynamic (CFD) simulations, the PMC design thermal resistance variation is studied, according to ambient temperature and level of losses. Then, a polynomial equation is developed to model those variations, and coefficients are deduced for all the sizes of PMC. This analytical model, useful for designers, is finally validated with thermal measurements on a planar transformer prototype.

show abstract

Section: Discussionmentioning

confidence: 99%

Thermal Resistance Modeling for the Optimal Design of EE and E/PLT Core-Based Planar Magnetics

Bakri,

Margueron,

Le Moigne

et al. 2024

Energies

View full text Add to dashboard Cite

show abstract

“…FEM is an accurate solution for modelling the heat transfer mechanisms: conduction, convection and radiation. FEM is frequently used to study the thermal behaviour of magnetic components [10, 24, 32, 33]. It solves the same problem as TATPM which is a heat equation associated with convection and radiation represented by heat exchange coefficients.…”

Section: Validation and Discussionmentioning

confidence: 99%

Automated tool for 3D planar magnetic temperature modelling: application to EE and E/PLT core‐based components

Bakri

Margueron

Magambo

et al. 2019

IET Power Electronics

View full text Add to dashboard Cite

Thermal performance of power converters is a key issue for the power integration. Temperatures inside active and passive devices can be determined using thermal models. Modelling the temperature distribution of high frequency magnetic components is quite complex due to diversity of their geometries and used materials. This paper presents a thermal modelling method based on lumped elements thermal network model, applied to planar magnetic components made of EE and E/PLT cores. The 3D model is automatically generated from the component's geometry. The computation enables to obtain 3D temperature distribution inside windings and core of planar transformers or inductors, in steady state or in transient case. The paper details the proposed modelling method as well as the automated tool including the problem definition and the solving process. The obtained temperature distributions are compared with Finite Element simulation results and measurements on different planar transformers.

show abstract

“…A comparison between a planar EE38 core-based planar transformer and a conventional PQ35/35 core-based transformer was presented in [77]. 3D FEA was performed using the Flux software [41].…”

Section: ) Finite Element Modelingmentioning

confidence: 99%

Thermal Modeling of Planar Magnetics: Fundamentals, Review and Key Points

2023

View full text Add to dashboard Cite

High-frequency and high-power density converters are essential for many applications such as automotive and more electric aircraft. To improve power density, planar magnetic components are increasingly used in power electronic converters owing to their advantages, such as less high-frequency losses, repeatability, and better thermal performance compared to conventional wound components. Considerable attention has been paid to their electrical performance. However, the thermal aspects are essential for enhancing completely their performance. Currently, there is an increasing interest in these critical aspects of high-density power converters. This paper presents a literature review of studies on the thermal modeling of planar magnetics. The papers were organized according to the model type and analyzed to highlight their merits and limitations. A multicriteria comparison of the studied papers was performed. Moreover, the key points and issues related to the thermal modeling are addressed to guide designers in enhancing the thermal aspects of planar magnetic components.INDEX TERMS Planar magnetics, High frequency magnetics, Thermal modeling, high power density.

show abstract

Thermal Comparison of Planar Versus Conventional Transformers Used in LLC Resonant Converters

Cited by 13 publications

References 8 publications

Thermal Resistance Modeling for the Optimal Design of EE and E/PLT Core-Based Planar Magnetics

Thermal Resistance Modeling for the Optimal Design of EE and E/PLT Core-Based Planar Magnetics

Automated tool for 3D planar magnetic temperature modelling: application to EE and E/PLT core‐based components

Thermal Modeling of Planar Magnetics: Fundamentals, Review and Key Points

Contact Info

Product

Resources

About