An Innovative Parametrization Method for a Thermal Equivalent Circuit Model of an Interior Permanent Magnet Synchronous Machine

Thomas Bäuml (Speaker), Christian Jungreuthmayer, Christian Kral

Research output: Chapter in Book or Conference ProceedingsConference Proceedings with Oral Presentationpeer-review

Abstract

In this paper an accurate and fast thermal equivalent circuit (TEC) model of an interior permanent magnet synchronous machine (IPMSM) is presented. This model is capable of simulating transient thermal effects. The key parameters of the presented model are the heat transfer coefficients which consider heat transfer from the solid to the fluid regions, and vice versa. An innovative parametrization method is introduced to determine these coefficients: First, the heat flows between adjacent regions are calculated by utilizing a 3D computational fluid dynamics (CFD) simulation. Second, the heat transfer coefficients of the TEC model are determined by minimizing an objective function which takes the heat flow deviation between the TEC model and the CFD model into account. The TEC model parametrized this way can be used to predict the thermal behavior of a permanent magnet machine drive under varying speed and torque conditions. The validity of the TEC model is verified by means of measurement results. For this purpose a prototype of the investigated IPMSM is equipped with temperature sensors in the stator, rotor, and cooling circuit, respectively.
Original languageEnglish
Title of host publicationProceedings of the 37th Annual Conference of the IEEE Industrial Electronics Society
Number of pages6
Publication statusPublished - 2011
Event37th Annual Conference of the IEEE Industrial Electronics Society (IECON 2011) -
Duration: 7 Nov 201110 Nov 2011

Conference

Conference37th Annual Conference of the IEEE Industrial Electronics Society (IECON 2011)
Period7/11/1110/11/11

Research Field

  • Not defined

Keywords

  • Interior permanent magnet synchronous machine,thermal equivalent circuit model
  • CFD
  • temperature
  • heat flow
  • convection
  • conduction

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