Optimisation of Additively Manufactured Hairpin Windings for High Power Density Traction Motors

dc.bibliographicCitation.bookTitle2025 IEEE International Electric Machines & Drives Conference (IEMDC)
dc.bibliographicCitation.firstPage846
dc.bibliographicCitation.lastPage852
dc.contributor.authorTesfamikael, Hadish Habte
dc.contributor.authorNotari, Riccardo
dc.contributor.authorMurataliyev, Mukhammed
dc.contributor.authorWang, Meiqi
dc.contributor.authorGerada, Chris
dc.contributor.authorDegano, Michele
dc.date.accessioned2025-07-08T13:33:35Z
dc.date.available2025-07-08T13:33:35Z
dc.date.issued2025-07-04
dc.description.abstractDespite the widespread use of hairpin winding (HW) in electric vehicle (EV) traction motors, several AC loss phenomena hinder its broader application at higher operating frequencies. This paper investigates methods for reducing AC copper losses, focusing on both design approaches and advanced manufacturing techniques, particularly additive manufacturing (AM). A comprehensive analysis of various HW layouts is conducted, evaluating AC copper losses through finite element (FE) and analytical approaches, while considering the effects of circulating currents and short pitching. Detailed analysis of a HW motor is performed to address the influence of magnetic saturation and rotor-magnetomotive force (MMF) on AC copper losses. Moreover, sizing of HW dimensions at a specific operating speed is carried out analytically and validated using FE analysis, with the aim of minimizing high-frequency losses. The potential of AM to enhance manufacturing flexibility and facilitate conductor size optimization is briefly explored. A case study with in-depth optimization is performed to determine the optimal HW dimensions at representative operating points along the torque-speed curve. As a result, the most suitable HW design for EV applications is proposed and benchmarked against results from rigorous optimization processes.eng
dc.description.sponsorshipEU (European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie grant agreement No 101073250)
dc.description.versionacceptedVersion
dc.identifier.urihttps://oa.tib.eu/renate/handle/123456789/19282
dc.identifier.urihttps://doi.org/10.34657/18299
dc.language.isoeng
dc.publisherPiscataway, NJ : IEEE
dc.relation.doihttps://doi.org/10.1109/IEMDC60492.2025.11061039
dc.relation.essn2994-2926
dc.relation.isbn979-8-3503-7659-3
dc.relation.ispartof2025 IEEE International Electric Machines & Drives Conference (IEMDC)
dc.rights.licenseCC BY 4.0 Unported
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectAC losseng
dc.subjecthairpin windingseng
dc.subjectadditive manufacturingeng
dc.subjectmulti-objective optimization (MOO)eng
dc.subjectwinding layoutseng
dc.subject.ddc620
dc.titleOptimisation of Additively Manufactured Hairpin Windings for High Power Density Traction Motorseng
dc.typeBookPart
dc.typeText
dcterms.event2025 IEEE International Electric Machines & Drives Conference (IEMDC)
dcterms.event.date18-21 May 2025
dcterms.event.placeHouston, TX, USA
tib.accessRightsopenAccess
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