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:
Jan. 18, 2022
Filed:
Nov. 04, 2019
Applicant:
Ebm-papst Mulfingen Gmbh & Co. KG, Mulfingen, DE;
Inventor:
Ralph Wystup, Künzelsau, DE;
Assignee:
ebm-papst Mulfingen GmbH & Co. KG, Mulfingen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 6/26 (2016.01); H02P 6/28 (2016.01);
U.S. Cl.
CPC ...
H02P 6/26 (2016.02); H02P 6/28 (2016.02);
Abstract
A permanent magnet synchronous machine () having a rotor (R) and a stator (S). Connection terminals () apply a feed alternating voltage with a feed frequency (f). The permanent magnet synchronous machine () has a motor controller (). The controller () has an assembly () to detect the terminal voltage on the connection terminals () and the current frequency (f). Also, the controller has an analysis device (). The analysis device () ascertains whether the current frequency (f) contains a frequency component (f) with a frequency that deviates from the feed frequency (f).