Turbine generator faults can be detected by receiving a current signal from the turbine generator, and synchronously sampling the current signal to obtain a set of current signal samples that are evenly spaced in the phase domain, in which phase differences between adjacent current signal samples in the set of current signal samples are substantially the same. The process includes generating a frequency spectrum of the current signal samples, identifying one or more excitations in the frequency spectrum, and detecting a fault in the turbine generator based on the one or more excitations in the frequency spectrum.
FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
 This invention was made with government support under Grant DE-EE0001366 awarded by the Department of Energy and Grant ECCS-1308045 awarded by the National Science Foundation. The government has certain rights in the invention.