The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 27, 2020
Filed:
Nov. 14, 2017
Sew-eurodrive Gmbh & Co. KG, Bruchsal, DE;
Christian Hecker, Forst, DE;
Thomas Schuster, Ottenbach, DE;
SEW-EURODRIVE GMBH & CO. KG, , DE;
Abstract
In a method for determining the angular position of the rotor of a synchronous motor fed by an inverter, the inverter is actuated by a signal electronics including a control unit, in particular having a processing unit and a memory, the stator current in particular is acquired with the aid of at least one current-acquisition device, the synchronous motor having a stator winding, which is fed by a three-phase voltage, i.e. stator voltage, which is set by the inverter such that the acquired stator current is controlled to a predefined setpoint stator current by the control unit, a setpoint stator current with a first actuation angle relative to the stator winding is predefined, in particular in the d-direction, the stator flux is determined from the time characteristic of the stator voltage and the acquired values of the stator current, and an angle value, in particular the angular position, is determined from the determined stator flux and a flux-value dependence as a function of a stator current.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile