Electric Drive System Study in Scientific and Educational Center “Schneider Electric - Nosov Magnitogorsk State Technical University”

Transient processes of an induction motor stator current and voltage were registered by the digital protection device for a direct start and an idling regimes. The calculation algorithm was presented and instantaneous values of an active and reactive power, power losses, the magnetization curve, the main inductance of the motor and magnetic steel losses were calculated. The specified values were calculated on the induction motor computer model and the results of the experimental and simulated data were compared. The space-time wave MMF is built at idle according to the database of stator winding currents and magnetic core parameters. The resulting wave allows estimating the arisen high-frequency oscillations of the MMF in the gap between the stator and the rotor of the motor.