Detection of Partially Fallen-Out Magnetic Slot Wedges in Inverter Fed AC Machines at Lower Load Conditions (CROSBI ID 196717)
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Podaci o odgovornosti
Stojčić, Goran ; Vašak, Mario ; Perić, Nedjeljko ; Joksimović, Gojko ; Wolbank, Thomas
engleski
Detection of Partially Fallen-Out Magnetic Slot Wedges in Inverter Fed AC Machines at Lower Load Conditions
Electrical machines in the high voltage class are usually designed with open stator slots. This wide open slots cause an increase of higher order harmonics, vibrations, noise and temperature, thus the machines efficiency is decreased. To counteract this disadvantage magnetic slot wedges are applied. Due to the impact of high magnetic and mechanical forces these wedges can fall out and may cause further serious damages. Up to now reliable detection methods for single missing slot wedges are coupled with a disassembling of parts of the machine. In this paper a method is investigated which provides the possibility of detection, based on the measurement of electrical terminal quantities only.
AC machines; condition monitoring; fault detection; stator slot wedges; transient excitation
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Podaci o izdanju
50 (2)
2014.
1161-1167
objavljeno
0093-9994
10.1109/TIA.2013.2275955
Povezanost rada
Elektrotehnika, Temeljne tehničke znanosti