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An accurate magnetic field analysis for estimating motor characteristics taking account of stress distribution in the magnetic core
- Source :
- IEEE Transactions on Industry Applications. 42:668-674
- Publication Year :
- 2006
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2006.
-
Abstract
- This paper discusses an accurate magnetic field analysis that addresses stress distribution in the magnetic core by using the finite-element method (FEM) to estimate motor characteristics. This analysis method consists of the following steps: 1) measurement of the magnetic characteristics of electrical steel sheets in a state where stress is added; 2) calculation of deformation and stress distribution using structural analysis; 3) preprocessing of the magnetic field analysis, which generates the FEM mesh taking account of the deformation by stress and the changes of the magnetic properties in each of the core elements corresponding to stress distribution; and 4) magnetic field analysis using the data measured in step 1) and the FEM mesh generated in step 3). As an example, a result of a permanent magnet motor's cogging torque calculation is shown, focusing on stress in the stator core resulting from shrink fitting into the frame. As a result, the cogging torque waveform was shown to differ depending on the shape and the materials of the frame.
- Subjects :
- Engineering
Deformation (mechanics)
business.industry
Stator
Electrical engineering
Cogging torque
Mechanics
engineering.material
Industrial and Manufacturing Engineering
Finite element method
Magnetic field
law.invention
Stress (mechanics)
Magnetic core
Control and Systems Engineering
law
Electrical and Electronic Engineering
business
Electrical steel
Subjects
Details
- ISSN :
- 00939994
- Volume :
- 42
- Database :
- OpenAIRE
- Journal :
- IEEE Transactions on Industry Applications
- Accession number :
- edsair.doi...........a0510afd8a0757b77a6095b9725e258f