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:
Aug. 03, 2021
Filed:
Nov. 18, 2019
Ebm-papst Mulfingen Gmbh & Co. KG, Mulfingen, DE;
Sebastian Schroth, Kupferzell, DE;
Marco Weckert, Dörzbach-Hohebach, DE;
Manuel Walter, Schwäbisch Hall, DE;
ebm-papst Mulfingen GmbH & Co. KG, Mulfingen, DE;
Abstract
An apparatus () for reducing bearing voltages in an electric machine (M) with a rotor () and a stator (). A rotor-side and stator-side bearing outer ring () and a respective bearing inner ring () are provided between the rotor () and stator (). A connection electronics system connect with the motor (M). A compensation arrangement () adjusts the potential (ULA-stator) of the bearing voltage at the bearing outer rings () and the respectively corresponding bearing inner ring () to an identical value. The compensation arrangement () comprises an impedance (ZKOMP), of at least one first impedance (ZKOMP, R) between the stator () and the rotor-side bearing outer ring (). The impedance (ZKOMP) has at least one impedance (ZKOMP. S) between the stator () and the stator-side bearing outer ring ().