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Contribution à l’identification de l’interaction paramètres procédés – propriétés d’emploi des produits : Application au forgeage et aux propriétés électromagnétiques d’une roue polaire d’alternateur

Abstract : The design of electrical machines aims to integrate the impact of the manufacturing process in order to optimize the conversion from mechanical to electrical energy, with the consideration of the electromagnetic properties of the machine components. The interactions between processes, electromagnetic properties and other material properties have been well studied in the case of the steel laminations, regarding their wide use in electrical engineering and the current standards of magnetic characterization devices. However, the claw pole alternator used in automotive industry has a rotor with massive components for the mechanical-to-electrical energy conversion. These components, called claw poles, are manufactured with forging operations whose impact on the machine performance is yet not well determined. The new challenges brought by this kind of work pieces led, in the frame of the current study, to the development of a specific methodology involving: identification of the link process – product, designing of a magnetic characterization device specific for representative samples as well as the establishment of behavior laws regarding relevant material parameters. The results, in accordance with the literature, have shown a strong influence of plastic strain and grain size on magnetic properties. Once these modified properties integrated in the electromagnetic model of the claw pole alternator, a significant decreased of the output current is eventually observed.
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https://pastel.archives-ouvertes.fr/tel-03270908
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Submitted on : Friday, June 25, 2021 - 11:11:28 AM
Last modification on : Friday, August 5, 2022 - 2:54:00 PM
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  • HAL Id : tel-03270908, version 1

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Marc Borsenberger. Contribution à l’identification de l’interaction paramètres procédés – propriétés d’emploi des produits : Application au forgeage et aux propriétés électromagnétiques d’une roue polaire d’alternateur. Génie mécanique [physics.class-ph]. Ecole nationale supérieure d'arts et métiers - ENSAM, 2018. Français. ⟨NNT : 2018ENAM0015⟩. ⟨tel-03270908⟩

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