1. Mathematical Model of Heat Transfer in an Electric Machine.
- Author
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Lyashenko, V., Kobilskaya, E., Zaika, A., Demyanchenko, O., and Hryhorova, T.
- Subjects
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HEAT transfer , *ELECTRIC machinery , *MATHEMATICAL models , *CONVECTIVE flow , *BOUNDARY value problems - Abstract
Measurement of winding temperature of electric machine, stator steel, housing, etc., is one of the necessary factors for diagnosing the condition of the machine, its reliability and life. At the stage of developing an electrical machine or during its modernization (changes in separate units), information is needed on about that, how these changes will influence on the temperature state of its windings. This is possible only during the previous study of the mathematical model or during the natural experiments. In this paper, a mathematical model of the temperature distribution in the radial section of the simplest electric machine is constructed. The mathematical model for studying the thermal process in an electric machine is considered as a two-dimensional conjugation problem for the heat equation in the normal section of the machine, the model allows for taking into account inhomogeneous boundary conditions for heat exchange and condition of perfect thermal contact between layers. Different temperature distributions are formed in different parts of the electric machine, depending on the conditions of heat exchange (thermal conductivity, convection, radiant heat exchange). [ABSTRACT FROM AUTHOR]
- Published
- 2018
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