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Analiza modelowa wpływu odłączenia i ponownego załączenia napięcia sieci na stany dynamiczne silnika asynchronicznego

Potrawka S., Sikora-Iliew R.

Maszyny Elektryczne : zeszyty problemowe

2006

Nr 75

17-20

The model for simulation the influence of the supply interruption on the dynamic states of an induction motor is presented. The model was employed to simulation of the three-phase balanced supply interruption(voltage and currents) and the voltage phase shift in the subsequent voltage recovery. The analysis of the electromotive force E, currents I torque Me, speed omega provides information about the influence of the supply interruption and the field suppression rate on the dynamic performance of a motor after the supply recovery. The influence of the voltage phase shift on the motor operation has been analysed for various values of the moment of inertia and various interruption time. The simulation was carried out using the Matlab package.

Wpływ przesunięcia fazy napięcia sieci na SEM i stany dynamiczne silnika asynchronicznego

Potrawka S., Sikora-Iliew R.

Maszyny Elektryczne : zeszyty problemowe

2005

Nr 72

203-207

The paper presents a model for simulating the influence of a voltage phase shift on the emf and dynamic states an induction motor. The model was employed to simulation investigation of both the balanced and unbalanced voltage dip and the voltage phase shift in the subsequent voltage recovery and the voltage phase shift without voltage dip. The observation of the emf provides information about the influence of the field suppression rate on the dynamic performance of a motor after the voltage recovery. The influence of the voltage phase shift on the motor operation was analysed for various values of the moment of inertia and the motors loads. The equations describing the electromechanical conversion in an induction motor are based on the Hamilton's principle of least action and Euler-Lagrange equations. Equations of the induction motor dynamics are written for the sinusoidal, three-phase stator supply voltage, in the stator-fixed coordinates for the space vectors components (a,b) of voltages U , currents i and the electromotive force E. The simulation was carried out using the Matlab package.