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. 03, 2025
Filed:
Dec. 17, 2020
Abb Schweiz Ag, Baden, CH;
Ioannis Tsoumas, Zürich, CH;
Tobias Geyer, Ennetbaden, CH;
Mario Schweizer, Rütihof, CH;
Eduardo Rohr, Camberwell, AU;
Frederick Kieferndorf, Baden, CH;
Wim Van-der-Merwe, Ennetbaden, CH;
Manuel Vetterli, Basel, CH;
Christian Meier, Ennetbaden, CH;
ABB Schweiz AG, Baden, CH;
Abstract
Described herein is a method of operating a power electronic converter device for an electrical power conversion system. The power electronic converter device includes a converter circuit including an input side, an output side, a first converter, and at least one second converter. The second converter includes at least one floating cell with a DC intermediate circuit and semiconductor devices. The method includes: switching the semiconductor devices of the floating cell at switching instants determined with optimized pulse patterns or carrier-based pulse width modulation; determining a fundamental voltage component for the floating cell; and generating the fundamental voltage component in the actual voltage of the floating cell by modifying the switching instants, such that a voltage Vof the DC intermediate circuit is lying in a given reference voltage range for balancing the DC intermediate circuit of the floating cell.