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:
Jun. 09, 2026
Filed:
Aug. 26, 2021
Hitachi Energy Ltd, Zürich, CH;
Michail Vasiladiotis, Zurich, CH;
Nicolas Sierro, Uvrier, CH;
Hitachi Energy Ltd., Zürich, CH;
Abstract
A method can be used for operating a converter that converter includes a control arrangement and modular-multilevel converters that are coupled in a parallel circuit. Each modular-multilevel converters includes branches, each having a cell with a capacitor and semiconductor switches. First voltage reference signals are generated as a function of a DC voltage reference and measured signals gained at the modular-multilevel converters and a second voltage reference signal is generated as a function of a first terminal reference. An inner voltage reference signal is generated as a function of an average DC voltage reference and of branch capacitor voltage signals. The first voltage reference signals, the second voltage reference signal and the inner voltage reference signal are combined into a branch control signal for each branch. Cell control signals are generated as a function of the branch control signals and provided to the semiconductor switches.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile