Static eccentricity detection in synchronous generators by field current and stator Voltage Signature Analysis - Part I: Theory


Static eccentricity detection can be performed by measurement of a double fundamental frequency ripple in the rotor current of synchronous machines. The ac ripple leads to clear signatures in the no-load terminal voltage spectra, pushing up some voltage harmonics normally smaller in the healthy machine. Rotor current ac ripple and related voltage harmonics… (More)


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