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Modélisation thermique des composants magnétiques planar pour l'électronique de puissance

Abstract : This research aims to provide suitable thermal models for planar magnetics components (PMC). First, high frequency losses (copper and core losses) issues are detailed, which are heat sources in PMC. Then, a state of the art of magnetic component thermal modeling is presented. To meet various needs of designers, two types of thermal models have been developed. A first analytical model, based on thermal resistance that enables to estimate temperature rise in the early design stage, is proposed. Its distinguishing feature is to take into account ambient temperature and loss values, in order to achieve an optimal design of PMC according to operating conditions. To compute 3D temperature distribution inside the component, and detect potential hotspots, a second model based on nodal thermal network (NTN) has been developped. It deals with permanent and transient cases, with different types of boundary conditions. The two models have been validated with numerical simulations and measurements on planar transformers laboratory prototypes
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https://tel.archives-ouvertes.fr/tel-02968833
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Submitted on : Friday, October 16, 2020 - 10:23:06 AM
Last modification on : Saturday, October 17, 2020 - 3:31:18 AM

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  • HAL Id : tel-02968833, version 1

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Reda Bakri. Modélisation thermique des composants magnétiques planar pour l'électronique de puissance. Thermique [physics.class-ph]. Ecole Centrale de Lille, 2018. Français. ⟨NNT : 2018ECLI0005⟩. ⟨tel-02968833⟩

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