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:
Jul. 03, 2012
Filed:
Feb. 09, 2009
Gerd Bettenwort, Kassel, DE;
Ralf Juchem, Niestetal, DE;
Matthias Victor, Niestetal, DE;
Tobias Müller, Escherode, DE;
Gerd Bettenwort, Kassel, DE;
Ralf Juchem, Niestetal, DE;
Matthias Victor, Niestetal, DE;
Tobias Müller, Escherode, DE;
SMA Solar Technology AG, Niestetal, DE;
Abstract
A method of activating a Multi-String inverter for photovoltaic generators () of a photovoltaic plant (), the Multi-String inverter incorporating on the input side a separate DC-DC converter () for each generator string (photovoltaic generator) () and each output of the DC-DC converters () being connected in parallel and to an input of a DC-AC converter () and the DC-AC converter () being connected with an alternating current mains () for feeding into the mains aims at improving efficiency. This is achieved in that one or several electrical variables, namely input current, input voltage and/or input power are measured at each DC-DC converter () and at least one of the DC-DC converters () changing its operating condition as a function of this measurement when a limit value and/or a range is exceeded in such a manner that its power loss is reduced so that the energy yield of the photovoltaic plant () is increased.