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:
Apr. 18, 2017
Filed:
Sep. 21, 2015
Abb Technology Oy, Helsinki, FI;
Tero Viitanen, Vantaa, FI;
ABB Technology OY, , FI;
Abstract
A three-level converter and a method for controlling a three-level converter, wherein the third (SSS), the fourth (SSS) and the fifth (SSS) controllable semiconductor switch of a switching branch having, out of all the switching branches, the most positive voltage in its alternating current pole (ACACAC) is controlled to be non-conductive for the whole period of time when the switching branch in question has the most positive voltage in its alternating current pole, and the first (SSS), the second (SSS) and the sixth (SSS) controllable semiconductor switch of a switching branch having, out of all the switching branches, the most negative voltage in its alternating current pole is controlled to be non-conductive for the whole period of time when the switching branch in question has the most negative voltage in its alternating current pole.