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. 30, 2022
Filed:
Feb. 05, 2020
Ebm-papst Mulfingen Gmbh & Co. KG, Mulfingen, DE;
Sebastian Schroth, Kupferzell, DE;
Manuel Walter, Schwäbisch Hall, DE;
ebm-papst Mulfingen GmbH & Co. KG, Mulfingen, DE;
Abstract
A device () to reduce harmful bearing voltages in an electrical machine (M) fed by a DC link voltage of a DC link. The electrical machine has a rotor () and a stator () with windings (W), and is insulated to ground. At least two bearings (), with an outer bearing ring () and an inner bearing ring (), are between the rotor () and the stator (). A shielding arrangement (S) is between the windings (W) of the stator () and the respective outer bearing rings (). A stator electrical connecting arrangement () is connected to a potential that is stable with respect to the DC link.