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Investigations on the Experimental Identification of AC-Copper Losses in Permanent Magnet Synchronous Machines using a Motor Sub-Assembly

Rollbühler, Christoph; Peukert, Sebastian; Fritz, Daniel; Jean-Francois Heyd; Kolb, Johannes; Doppelbauer, Martin

Abstract (englisch):
Analysis of AC copper losses in electrical machines is still a challenging task. Due to high utilization of high power density automotive drives, stray fields in the slots cause a significant copper loss increase compared to DC copper losses. Especially at large cross-sectional areas of the wires up to several times the DC-losses may occur in copper. This paper presents a new method of identifying these additional copper losses in electrical machines directly through measurement and without any finite-element co-simulation, which has not been shown in literature so far. Therefore, a motor sub-assembly consisting of three stator-teeth of an automotive machine and a rotor back iron are manufactured. Different adaptations of the motor sub-assembly are analysed using finite-element software to ensure proper flux-paths and AC copper losses close to the motor. Finally, measurements are performed and discussed.

Postprint §
DOI: 10.5445/IR/1000100813
Veröffentlicht am 12.12.2019
Cover der Publikation
Zugehörige Institution(en) am KIT Elektrotechnisches Institut (ETI)
Publikationstyp Proceedingsbeitrag
Publikationsjahr 2019
Sprache Englisch
Identifikator ISBN: 978-1-7281-4878-6
KITopen-ID: 1000100813
Erschienen in IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society
Veranstaltung 45th Annual Conference of the Industrial Electronics Society (IECON 2019), Lissabon, Portugal, 14.10.2019 – 17.10.2019
Schlagwörter current displacement, proximity loss, copper loss, interior permanent magnet synchronous machine, motorette
Nachgewiesen in Dimensions
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