EQUIVALENT THERMAL CONDUCTIVITY OF INSULATING MATERIALS FOR HIGH VOLTAGE BARS IN SLOTS OF ELECTRICAL MACHINES
The equivalent thermal conductivity of insulating materials for a high voltage bar in slots of electrical machines is calculated using the finite element method. This allows the use of much coarser meshes with an equivalent thermal conductivity k e , without accuracy loss in the hot spot temperature calculation. It is shown the dependency of k e value on the equivalent mesh used. Some considerations are also presented on the heat flux finite element calculation.
KeywordsTotal Heat Bitumen
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