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:
Oct. 12, 2010
Filed:
Jul. 31, 2008
Peter Zacharias, Kassel, DE;
Jens Friebe, Nörten-Hardenberg, DE;
Felix Blumenstein, Hessisch Lichtenau, DE;
Ann-katrin Gerlach, Kassel, DE;
Jan Scheuermann, Niedenstein, DE;
Matthias Zin, Jesberg, DE;
Peter Zacharias, Kassel, DE;
Jens Friebe, Nörten-Hardenberg, DE;
Felix Blumenstein, Hessisch Lichtenau, DE;
Ann-Katrin Gerlach, Kassel, DE;
Jan Scheuermann, Niedenstein, DE;
Matthias Zin, Jesberg, DE;
SMA Solar Technology AG, Niestetal, DE;
Abstract
An inverter () for feeding electric power into a utility grid () or into a load is described. The inverter () contains direct voltage inputs (), one first intermediate circuit () connected thereto and comprising two series connected capacitors (C, C) that are connected together at a ground terminal (), two alternating voltage outputs () of which one at least is provided with a grid choke (L) and one bridge section (). In accordance with the invention, the inverter () contains only two switches (S, S), which are disposed in the bridge section () and are to be switched at high frequency, as well as, between the first intermediate circuit () and the bridge section (), a second intermediate circuit () that is devised at least for selectively boosting or bucking the direct voltage and intended for supplying said bridge section () with positive and negative voltage, said second intermediate circuit comprising an internal freewheeling (D, D) for maintaining the currents flowing through the grid choke (L) in opposite directions.