Damping of amplified resonances at a motor driven with a constant voltage inverter by amplifying losses in the range of critical self oscillations

摘要

The method involves damping resonance increases for an electric motor at the motor's star point by using materials in the motor's stator that produce increased losses in the region of stimulated asymmetrical system resonances of the converter system relative to earth potential, especially in the frequency range above 10 kHz. An Independent claim is are also included for an electric motor for operation on an intermediate circuit converter.