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. 30, 2017
Filed:
Aug. 11, 2015
Ebm-papst Mulfingen Gmbh & Co. KG, Mulfingen, DE;
Fabian Schneider, Rot am See, DE;
ebm-papst Mulfingen GmbH & Co. KG, Mulfingen, DE;
Abstract
The present invention relates to a control system and a method for raising the mains-side power factor λ of three-phase fed EC motors having a dc voltage intermediate circuit () with an intermediate center tap (DCM) for generating a positive and a negative intermediate circuit potential (DC+, DC−), comprising three active bridge arms (Ia, IIa, IIIa), each of which are connected to a subordinate two-point current control (ZPR, ZPR, ZPR) and, in each case, via said current control to a superimposed intermediate circuit voltage control (), which controls the potential difference between the middle circuit potentials (DC+, DC−) via set point settings for the subordinate two-point current controllers (ZPR, ZPR, ZPR).