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:
Mar. 03, 2026
Filed:
Aug. 04, 2022
Fronius International Gmbh, Pettenbach, AT;
Fronius International GmbH, Pettenbach, AT;
Abstract
A method and device is provided for calibrating a time base signal in a photovoltaic inverter, which has a conversion circuit configured to convert a DC current into an AC current. The method comprises the steps of: receiving a reference signal by a receiving unit from an external reference signal source; determining a deviation between the received reference signal and a time base signal which is generated by a local time signal generator; correcting the generated time base signal to minimize the determined deviation or calculating a correction factor, wherein the calibration unit automatically corrects the time base signal obtained from the time signal generator, even when a reference signal is temporarily unavailable, depending on at least one operating parameter which is stored in a data memory and which is formed by an internal temperature inside the housing of the photovoltaic inverter and/or by a measured supply voltage; and adapting predetermined values for components of the conversion circuit depending on the corrected time base signal or depending on the calculated correction factor.