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:
Feb. 18, 2025
Filed:
Apr. 19, 2021
Applicant:
Fronius International Gmbh, Pettenbach, AT;
Inventors:
Richard Grasböck, Wels-Thalheim, AT;
Michael Rothboeck, Wels-Thalheim, AT;
Roland Pieler, Wels-Thalheim, AT;
Harald Kreuzer, Wels-Thalheim, AT;
Assignee:
Fronius International GmbH, Pettenbach, AT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 7/483 (2007.01); H02M 1/08 (2006.01); H02M 7/487 (2007.01);
U.S. Cl.
CPC ...
H02M 7/4833 (2021.05); H02M 1/08 (2013.01); H02M 7/487 (2013.01);
Abstract
To improve voltage balancing at the DC link capacitor voltages of a multi-level inverter with a split DC link a modulation signal with a modulation signal amplitude as even harmonic signal of the output voltage or output current of the inverter is calculated from an actual electric power difference of the actual electric powers at the DC link capacitors and is superimposed onto the setpoint value for setting an output voltage or output current of the inverter.