A method for eliminating the vibration of a three phase electric motor has a rectifier and frequency generator with control units to ground the common point of the motor windings

摘要

The system (13) for the operation of a three phase electric motor (2) has the windings (21) supplied from a frequency generator (6) supplied by a rectifier (5) and three phase electrical supply (4) to earth (8). The floating potential changes above earth potential at the rectifier output is controlled (25) to eliminate excessive vibrations of the motor.