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Thermal Model of Electric Machines with Correction of Critical Parameters

Holtmann, Christoph and Rinderknecht, Frank and Friedrich, Horst E. (2017) Thermal Model of Electric Machines with Correction of Critical Parameters. In: IEEE International Electric Machines and Drives Conference Record, IEMDC. IEEE. IEEE International Electric Machines and Drives Conference, 21.-24. Mai. 2017, Miami, USA. DOI: 10.1109/IEMDC.2017.8002043 ISBN 978-1-5090-4281-4

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Abstract

This paper deals with a low to middle order finite volume/lumped capacitance thermal model of an electric machine and the correction of critical parameters. The different parts of the electric machine are divided into sub-volumes called finite volumes or lumped capacitances. From the given characteristic geometry of the electric machine, the thermal resistances to create the system matrix are calculated. The resulting non-linear equation system is solved for steady state condition for a given current density. The result is compared to experimental measurements allowing the calculation of material correction parameters included in the thermal resistances using the least square method. In a second step an experiment with time dependent current in the stator windings is done. The experiment then is simulated with the time dependent current measured in the experiment using the correction parameters found in the first step. The paper aims to present the possibility to calculate the maximum temperatures very accurately with this method.

Item URL in elib:https://elib.dlr.de/112519/
Document Type:Conference or Workshop Item (Poster)
Title:Thermal Model of Electric Machines with Correction of Critical Parameters
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Holtmann, ChristophChristoph.Holtmann (at) dlr.deUNSPECIFIED
Rinderknecht, FrankFrank.Rinderknecht (at) dlr.deUNSPECIFIED
Friedrich, Horst E.horst.friedrich (at) dlr.deUNSPECIFIED
Date:2017
Journal or Publication Title:IEEE International Electric Machines and Drives Conference Record, IEMDC
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
DOI :10.1109/IEMDC.2017.8002043
Publisher:IEEE
ISBN:978-1-5090-4281-4
Status:Published
Keywords:Electric Machines, Lumped Thermal Model, Windings,
Event Title:IEEE International Electric Machines and Drives Conference
Event Location:Miami, USA
Event Type:international Conference
Event Dates:21.-24. Mai. 2017
Organizer:ARIA Research LLC
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles (old)
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - NGC-Antriebsstrang (old), V - Next Generation Train III (old)
Location: Stuttgart
Institutes and Institutions:Institute of Vehicle Concepts
Deposited By: Holtmann, Christoph
Deposited On:18 Oct 2017 09:45
Last Modified:31 Jul 2019 20:09

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