RAPID RESWITCHING OF INDUCTION MACHINE FROM CURRENT SOURCE INVERTER ON THE SUPPLY NET

The contribution deals with the dynamics of induction machine during r eswitching process from the main feeder on the stand-by one. The main feeder may be a current source inverter in which case the machine, bef ore switching off, may be operated with lower frequency than the frequ ency of the stand-by supply net. It causes that the electromotive forc e on the opened machine terminals is no longer a measure of the magnit ude of the rotor currents. The analysis was carried out with recogniti on for the magnetic saturation of the main flux.