FIELD: electricity.
SUBSTANCE: electromotive force is measured during idling of the electrical machine at the nominal rpm of the rotor, it is compared with the reference value characterising a good condition of the electrical machine, and at deviation of the measured electromotive force and the reference measured electromotive force, the values of static and dynamic eccentricities are calculated. Using decomposition of the oscillogram of the measured electromotive force in Fourier series the level of oscillations is estimated. Besides, using the values of static and dynamic eccentricities, and also the level of oscillations the technical condition of the electrical machine is available in real time.
EFFECT: improvement of accuracy of diagnostics of an electrical machine, adding of possibility of determination of not only quantitative, but also qualitative characteristics of defect, simplification of technical implementation of diagnostics, possibility of real time diagnostics.
4 dwg
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