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Comparison of a CFD Analysis and a Thermal Equivalent Circuit Model of a TEFC Induction Machine With Measurements

  • For a totally enclosed fan-cooled induction machine, two methods of numerical analysis are compared with measurements. The first numerical method is based on computational fluid dynamics (CFDs) and the second one uses a thermal equivalent circuit (TEC). For the analysis based on CFD, a 3-D induction machine including housing is modeled. The numeric solution of the flow equations is determined for stationary temperature distributions. For the TEC, a discretized one-and-a-half-dimensional model of the induction machine is considered. With the TEC model, stationary and transient operating conditions can be simulated. Measurement results are determined by iron-copper-nickel sensors embedded in the stator winding and the housing, as well as by an IR sensor for measuring the rotor temperature. With these measurement signals, stationary and transient operating conditions can be analyzed. For stationary operating conditions, additionally, the housing temperatures are determined by an IR camera. The investigated simulation and measurement methods reveal different local and global temperatures, and thus, only certain aspects and characteristics of the obtained temperatures can be compared. Nevertheless, certain conclusions can be drawn from comparing these aspects considering the actual restrictions of each of the applied methods.

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Metadaten
Author:Christian Kral, Anton Haumer, Matthias Haigis, Hermann Lang, Hansjörg Kapeller
DOI:https://doi.org/10.1109/TEC.2009.2025428
ISSN:0885-8969
Parent Title (English):IEEE Transactions on Energy Conversion
Publisher:IEEE
Document Type:Article
Language:English
Year of first Publication:2009
Release Date:2022/12/09
Tag:Fluid flow; asynchronous machines; computational fluid dynamics; electric sensing devices; induction machines; numerical analysis; simulation; temperature
Volume:24
Issue:4
First Page:809
Last Page:818
Institutes:Fakultät Elektro- und Informationstechnik
Fakultät Elektro- und Informationstechnik / Labor Elektrische Maschinen und Antriebstechnik
Begutachtungsstatus:peer-reviewed
Publication:Externe Publikationen
research focus:Energie und Mobilität
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG