Analytical Determination of the Slot and the End-Winding Portion of the Winding-to-Rotor Capacitance for the Prediction of Shaft Voltage in Electrical Machines

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dc.identifier.uri http://dx.doi.org/10.15488/11066
dc.identifier.uri https://www.repo.uni-hannover.de/handle/123456789/11148
dc.contributor.author Stockbrügger, Jan Ole
dc.contributor.author Ponick, Bernd
dc.date.accessioned 2021-06-22T08:11:56Z
dc.date.available 2021-06-22T08:11:56Z
dc.date.issued 2021
dc.identifier.citation Stockbrügger, J. O.; Ponick, B.: Analytical Determination of the Slot and the End-Winding Portion of the Winding-to-Rotor Capacitance for the Prediction of Shaft Voltage in Electrical Machines. In: Energies 14 (2021), Nr. 1, 174. DOI: https://doi.org/10.3390/en14010174
dc.description.abstract Common-mode voltage, caused by a 2-level inverter, is a source of discharge currents in motor bearings. Due to the capacitive coupling, between the stator winding and the rotor, an image of the common-mode voltage is produced on the shaft—which can exceed the dielectric strength of the lubrication film of motor bearings. Accurate determination of the winding-to-rotor capacitance is necessary to predict the shaft voltage. This article proposes a novel analytical determination of the slot and the end-winding portion of the winding-to-rotor capacitance. The calculation rules, which are based on the method of image charges and the charge simulation method, take into account the continuity and the boundary conditions of the field areas. Results are validated by means of finite element method simulations. Notably, deviations are in the single-digit percentage range. Furthermore, the presented methods are simple to implement. eng
dc.language.iso eng
dc.publisher Basel : MDPI AG
dc.relation.ispartofseries Energies 14 (2021), Nr. 1
dc.rights CC BY 4.0 Unported
dc.rights.uri https://creativecommons.org/licenses/by/4.0/
dc.subject winding-to-rotor capacitance eng
dc.subject shaft voltage eng
dc.subject EDM currents eng
dc.subject traction motor eng
dc.subject.ddc 620 | Ingenieurwissenschaften und Maschinenbau ger
dc.title Analytical Determination of the Slot and the End-Winding Portion of the Winding-to-Rotor Capacitance for the Prediction of Shaft Voltage in Electrical Machines
dc.type article
dc.type Text
dc.relation.essn 1996-1073
dc.relation.doi https://doi.org/10.3390/en14010174
dc.bibliographicCitation.issue 1
dc.bibliographicCitation.volume 14
dc.bibliographicCitation.firstPage 174
dc.description.version publishedVersion
tib.accessRights frei zug�nglich


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