Additive manufacturing and performance of E-Type transformer core
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2021-06-03
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Mcode
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Language
en
Pages
14
Series
Energies, Volume 14, issue 11
Abstract
Additive manufacturing of ferromagnetic materials for electrical machine applications is maturing. In this work, a full E-type transformer core is printed, characterized, and compared in terms of performance with a conventional Goss textured core. For facilitating a modular winding and eddy current loss reduction, the 3D printed core is assembled from four novel interlocking components, which structurally imitate the E-type core laminations. Both cores are compared at approximately their respective optimal working conditions, at identical magnetizing currents. Due to the superior magnetic properties of the Goss sheet conventional transformer core, 10% reduced efficiency (from 80.5% to 70.1%) and 34% lower power density (from 59 VA/kg to 39 VA/kg) of the printed transformer are identified at operating temperature. The first prototype transformer core demonstrates the state of the art and initial optimization step for further development of additively manufactured soft ferromagnetic components. Further optimization of both the 3D printed material and core design are proposed for obtaining higher electrical performance for AC applications.Description
Funding Information: Funding: This research work has been supported by the Estonian Ministry of Education and Re‐ search (Project PSG‐137). Publisher Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Keywords
Additive manufacturing, Iron losses, Magnetic properties, Selective laser melting, Soft magnetic materials, Transformer
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Citation
Tiismus, H, Kallaste, A, Belahcen, A, Rassõlkin, A, Vaimann, T & Ghahfarokhi, P S 2021, ' Additive manufacturing and performance of E-Type transformer core ', Energies, vol. 14, no. 11, 3278 . https://doi.org/10.3390/en14113278