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. 25, 2025
Filed:
Jan. 28, 2021
Abb Schweiz Ag, Baden, CH;
Tobias Geyer, Ennetbaden, CH;
Hendrik du Toit Mouton, Stellenbosch, ZA;
ABB Schweiz AG, Baden, CH;
Abstract
Described herein is method for controlling an electrical converter, the electrical converter converting an input voltage (v) into a multi-level output voltage (v), the method incudes: determining an optimized pule pattern (u(x)); and determining switching states from the optimized pulse pattern (u(x)) and applying the switching states to semiconductor switches of the electrical converter, such that the multi-level output voltage (v) is generated, where the optimized pulse pattern (u(x)) includes a plurality of switching transitions (Δu), each switching transition (Δu) encoding a transition between two different levels of the multi-level output voltage (v), at a switching angle (x), where the optimized pulse pattern (u(x)) is determined by optimizing a cost function, where the cost function J(x)=ΔuA(x)Δu is a cost matrix A(x), and where each entry of the cost matrix A(x) depends on polynomials into which the switching angles (x) are input.