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

Author:

Bakri Reda12ORCID,Margueron Xavier3ORCID,Le Moigne Philippe3ORCID,Idir Nadir3ORCID

Affiliation:

1. Univ. Lille, Arts et Metiers Institute of Technology, Centrale Lille, Junia, HESAM Université, ULR 2697, L2EP, F-59000 Lille, France

2. Arts et Métiers Campus of Rabat, Technopolis Parc, Salé 11000, Morocco

3. Univ. Lille, Arts et Metiers Institute of Technology, Centrale Lille, Junia, ULR 2697-L2EP, F-59000 Lille, France

Abstract

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.

Publisher

MDPI AG

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