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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Kan Zhou Pries, J. Hofmann, H. Youngki Kim Tae-Kyung Lee Filipi, Z. |
| Copyright Year | 2011 |
| Description | Author affiliation: Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI 48109, USA (Kan Zhou; Pries, J.; Hofmann, H.) || Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109, USA (Youngki Kim; Tae-Kyung Lee; Filipi, Z.) |
| Abstract | Knowledge of the internal temperatures of an electric machine under real-time operating conditions would be extremely useful in order to determine its torque capabilities. This knowledge is also useful for full-scale electric vehicle simulation and optimization. In this paper we present a technique for developing computationally-efficient thermal models for electric machines that can be used for real-time thermal observers and vehicle-level simulation and optimization. The technique is based upon simulating the eigenmode of the system as determined by finite element analysis. The order of the model is then dramatically reduced in two ways. First, the extent of excitation of each mode is calculated, and only eigenmodes that are significantly excited are included in the dynamic model; other eigenmodes are treated as static modes. Second, only a few “hot spots” in various regions are chosen. The result is a thermal model that can accurately model internal temperatures of the machine while requiring the modeling of only a handful of states. Such a model can be used in vehicle simulations, or for real-time observers in actual vehicles. The computation time of the model presented in this paper is dramatically reduced compared with a typical full-order finite element model. |
| Starting Page | 1 |
| Ending Page | 6 |
| File Size | 4846235 |
| Page Count | 6 |
| File Format | |
| ISBN | 9781612842486 |
| e-ISBN | 9781612842479 |
| e-ISBN | 9781612842462 |
| DOI | 10.1109/VPPC.2011.6043205 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2011-09-06 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Computational modeling Rotors Atmospheric modeling Stator cores Heat transfer Heating finite element analysis Electric machines thermal models |
| Content Type | Text |
| Resource Type | Article |
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