Evaluation of a stator end winding bracing system to be used in large rotating machines

Author

Mraz, Petr ; Mentlik, Vaclav ; Rok, M.

Author_Institution

Fac. of Electr. Eng., Univ. of West Bohemia, Pilsen, Czech Republic

fYear

2013

fDate

June 30 2013-July 4 2013

Firstpage

517

Lastpage

520

Abstract

This paper deals with a possibility of application of new repairing procedure concerning stator end winding bracings in the large rotating machines - specifically changing of inter coil end winding bracings. For this purpose 3D glass fabric in several layers configuration was tested. It is a sandwich composite material consisted of two thin glass fabric layers, which are mutually interweaved with core in the shape of number 8. Complex tests were performed to verify application suitability of this new arrangement. Partial discharge measurements, dielectric dissipation factor and mechanical tests were done. Experimental results showed significant lack of uniformity of suggested material and limits of application of this arrangement.

Keywords

electric machines; machine testing; partial discharge measurement; stators; 3D glass fabric; dielectric dissipation factor; large rotating machines; mechanical tests; partial discharge measurements; repairing procedure; sandwich composite material; stator end winding bracing system evaluation; thin glass fabric layers; Dielectric measurement; Materials; Partial discharge measurement; Partial discharges; Temperature measurement; Voltage measurement; Windings; dissipation factor; end stator bracings; large rotating machines; mechanical tests; partial discharge;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid Dielectrics (ICSD), 2013 IEEE International Conference on

Conference_Location

Bologna

ISSN

2159-1687

Print_ISBN

978-1-4799-0807-3

Type

conf

DOI

10.1109/ICSD.2013.6619699

Filename

6619699