Title :
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
fDate :
June 30 2013-July 4 2013
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;
Conference_Titel :
Solid Dielectrics (ICSD), 2013 IEEE International Conference on
Conference_Location :
Bologna
Print_ISBN :
978-1-4799-0807-3
DOI :
10.1109/ICSD.2013.6619699
