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:
Aug. 29, 2023
Filed:
Dec. 09, 2020
Fronius International Gmbh, Pettenbach, AT;
Roland Pieler, Wels-Thalheim, AT;
Michael Rothböck, Wels-Thalheim, AT;
Stefan Wieser, Wels-Thalheim, AT;
Harald Kreuzer, Wels-Thalheim, AT;
FRONIUS INTERNATIONAL GMBH, Pettenbach, AT;
Abstract
A method for operating an inverter includes applying, via a switching unit of the inverter, an AC voltage to a phase line in which a filter inductor is arranged, determining a coil current (i) of the filter inductor and determining a coil voltage (u) of the filter inductor, determining a first value (L(I)) of the filter inductor for a first value of the coil current (I), determining an inductance profile of the filter inductor with respect to the coil current, using the determined first value of the filter inductance and optionally using the at least one determined further value of the filter inductance, and controlling the switching unit of the inverter, via a control unit, to generate an alternating current in the phase line. At least one parameter of the control process is continuously adapted to the momentary coil current according to the determined current-dependent inductance profile.