Ceramic-like Composite Systems for Winding Insulation of Electrical Machines
| Autor: | Jeannette Kuhn, Uwe Schuffenhauer, Bernd Cebulski, Markus Beyreuther, Soren Miersch, Mathias Lindner, Thomas Schuhmann, Jakob Jung, Markus Buddenbohm, Ralph Schubert |
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| Přispěvatelé: | Hochschule für Technik und Wirtschaft |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Electric machines insulation technology ceramics thermal variables measurement cooling thermal analysis numerical simulation traction motors modular machines outer rotor 020208 electrical & electronic engineering Composite number 02 engineering and technology engineering.material 01 natural sciences Thermal conductivity Electromagnetic coil visual_art 0103 physical sciences Thermal Physics::Space Physics 0202 electrical engineering electronic engineering information engineering engineering visual_art.visual_art_medium Ceramic ddc:621 Composite material Synchronous motor Thermal analysis Electrical steel |
| Popis: | Insulating sheets, impregnants and encapsulation materials commonly used for winding insulation offer low thermal conductivities. This leads to an increased heating of the winding of electrical machines and to the existence of hotspots. The electromagnetical utilization of the machine has to be reduced with respect to the allowed maximum winding temperature. In this paper, the development and experimental investigation of novel polysiloxane composites with ceramic fillers are presented. The materials are tested by means of impregnated and encapsulated samples of a round-wire winding as well as the main insulation of electrical steel sheets and laminated cores. Numerical models are implemented for determining the equivalent thermal conductivity of the winding compound comprising the enameled wire and the impregnant. Based on the example of a permanent-magnet synchronous machine with outer-rotor in modular construction, the potential for increasing the electromagnetical utilization is shown. |
| Databáze: | OpenAIRE |
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