Patent ID: 9673745
Date: 2017-06-06
CPC Classifications: H02P

Claim:
1. A control system for servomotors for driving axes in an industrial machine or machine tool, comprising: a plurality of first servomotors configured to drive axes; a plurality of converters configured to convert alternate current (AC) voltage into direct current (DC) voltage; a plurality of first inverters configured to receive DC voltage from the converters and convert the DC voltage into AC voltage to drive the plural first servomotors and also convert the regenerated AC power from the first servomotors into DC power; second servomotors configured to rotate inertial bodies; a plurality of second inverters configured to receive DC voltage from the converter and convert the DC voltage into AC voltage to drive the second servomotors and also convert the regenerated AC power from the second servomotors into DC power; and a servomotor control unit configured to control the plural first servomotors and the second servomotors, wherein the number of the second servomotors is less than that of the plural second inverters, and wherein at least one of the second servomotors includes a plurality of independent windings, and at least part of the plural second inverters are connected to the plural independent windings provided for one of the second servomotors.