Patent ID: 6233996
Filing Date: 2001-05-22
Classification: B21B,H02M,H02P,Y02P

Abstract:
A drive system for industrial plant sections, comprising:at least one electric motor;at least one converter, the at least one converter including a voltage link connecting the at least one electric motor to an AC-voltage power supply network, the at least one converter regulating at least one of i) an effective power consumption of the at least one electric motor, and ii) torque and rotational speed of the at least one electric motor, from the AC-voltage power supply network, a link voltage of the converter being set so that harmonics induced by the drive system are minimized in the AC-voltage power supply network to an optimum value; anda link voltage computing unit computing a link voltage setpoint value as a function of the voltage of the AC-voltage power supply network,wherein the link voltage is set as a function of measured values of a voltage of the AC-voltage power supply network so that the harmonics induced by the drive system are minimized in the AC-voltage power supply network to the optimum value.