In-plane eddy current analysis for end and interior stator core packets of turbine generators
2008
This paper describes analyses of in-plane eddy currents, which are generated by the perpendicular flux at both of end and interior stator core packets of turbine generators. The 3-D finite element method considering lamination of the electrical steel sheets is applied to the calculation. The validity of the analysis is examined by a simple apparatus that simulates the stator core of the turbine generator. It is clarified that the in-plane eddy currents are generated not only at the end stator packets, but also at the interior packet due to the duct space. It is also clarified that the in-plane eddy current loss decreases as nearly half by the slits of the stator teeth.
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