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Investigation of Electrostatic Shieldings in Traction Motors to Mitigate Capacitive Bearing Currents

Scheuermann, Silvan ORCID iD icon 1; Brodatzki, Matthias ORCID iD icon 1; Doppelbauer, Martin 1
1 Elektrotechnisches Institut (ETI), Karlsruher Institut für Technologie (KIT)

Abstract:

Electrostatic shieldings in electrical machines have the capability to mitigate harmful capacitive bearing currents. By employing Finite Element (FE)-simulations, the shieldings' effectiveness, influence on parasitic capacitances, and the associated eddy current losses are investigated. The study includes various shielding designs for both, the stator and end-winding part of a motor. Based on the knowledge gained by the Finite Element Analysis (FEA), motorettes with slot-shieldings and stators with overhang shieldings were built. Finally, the study presents the validation of the slot-shieldings' effectiveness by impedance measurements. The measurements confirm a reduction of the winding-rotor capacitance up to approx. 84 %. A large focus is given to the development of an appropriate design regarding its suitability in series production.

Zugehörige Institution(en) am KIT Elektrotechnisches Institut (ETI)
Publikationstyp Proceedingsbeitrag
Publikationsdatum 19.06.2024
Sprache Englisch
Identifikator ISBN: 979-8-3503-8760-5
KITopen-ID: 1000173274
Erschienen in 2024 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), Napoli, Italy, 19-21 June 2024
Veranstaltung International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM 2024), Napoli, Italien, 19.06.2024 – 21.06.2024
Verlag Institute of Electrical and Electronics Engineers (IEEE)
Seiten 1087–1092
Schlagwörter Electric machines, Traction motors, Bearing currents, Parasitic effects, Bearing damage, Finite Element Analysis
Nachgewiesen in Dimensions
Scopus

Postprint §
DOI: 10.5445/IR/1000173274
Veröffentlicht am 22.10.2024
Originalveröffentlichung
DOI: 10.1109/SPEEDAM61530.2024.10609042
Scopus
Zitationen: 1
Dimensions
Zitationen: 2
Seitenaufrufe: 57
seit 09.08.2024
Downloads: 25
seit 29.10.2024
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