Diagnostyka silnika indukcyjnego z zastosowaniem sygnału skutecznej wartości ruchomej prądu

It is possible to execute diagnostics of induction motor on the basis of the moving rms stator current signal in cases of non-sinusoidal supplying. The results of using of this signal in diagnostics of induction motor supplied by symmetrical, sinusoidal 3-phase voltage have been presented in this paper. It has been used the moving rpm for analysis different damages of induction motor and perform review of results to use this signal in diagnostics in those conditions of supplying. Dynamical model of this machine calculates harmonics of stator, rotor and stator-rotor inductances accounting for only global saturation of the air-gap region. The model considered various rotational speeds of the rotor.