US 11,671,035 B2
Method for operating a system comprising at least two mechanically coupled asynchronous motors, computer program containing an implementation of the method and system operating in accordance with the method
Christoph Fritsch, Pommersfelden (DE); Stefan Rupprecht, Postbauer-Heng (DE); Martin Streubühr, Zirndorf (DE); and Bernd Wedel, Möhrendorf (DE)
Assigned to SIEMENS AKTIENGESELLSCHAFT, Munich (DE)
Appl. No. 17/431,647
Filed by Siemens Aktiengesellschaft, Munich (DE)
PCT Filed Feb. 19, 2020, PCT No. PCT/EP2020/054281
§ 371(c)(1), (2) Date Aug. 17, 2021,
PCT Pub. No. WO2020/169631, PCT Pub. Date Aug. 27, 2020.
Claims priority of application No. 19158479 (EP), filed on Feb. 21, 2019.
Prior Publication US 2022/0140756 A1, May 5, 2022
Int. Cl. H02P 5/00 (2016.01); H02P 23/14 (2006.01)
CPC H02P 5/00 (2013.01) [H02P 23/14 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method for operating a system having at least two mechanically coupled asynchronous motors, the method comprising
selecting one of the at least two asynchronous motors as master to operate during operation of the system as master,
measuring an effective flux angle of the master as a master flux angle in a continuous or quasi-continuous manner;
operating, during the operation of the system, others of the at least two asynchronous motors as slaves;
including the master flux angle in a setpoint value for regulating the flux angle of the slaves; and
using the master flux angle as the setpoint value for regulating the flux angle of the slaves.