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:
May. 07, 2019
Filed:
May. 04, 2016
Ebm-papst Mulfingen Gmbh & Co. KG, Mulfingen, DE;
Sebastian Schroth, Kupferzell, DE;
Roland Oberst, Gruensfeld, DE;
Malte Pils, Ilshofen-Oberaspach, DE;
Marco Weckert, Doerzbach-Hohebach, DE;
ebm-papst-Mulfingen GmbH & Co. KG, Mulfingen, DE;
Abstract
The present invention relates to an apparatus for reducing and/or avoiding harmful bearing currents in an electrical machine (M) such as preferably a three-phase EC motor (M), with a rotor () and a stator () which is constructed in an insulated manner, wherein at least one outer bearing ring () and one inner bearing ring () are provided between rotor () and stator (), comprising connecting electronics () for connecting the motor (M), wherein the stator () is connected by means of an electrical connection () to a high-frequency electronics potential () which differs from the earth potential (U) and is stable with respect to the latter at a potential tap () of the connecting electronics ().