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, 2020
Filed:
Apr. 13, 2016
Siemens Aktiengesellschaft, Munich, DE;
Marcel Lutze, Nuremberg, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A method for controlling a converter, wherein positive and negative lines of an intermediate circuit are connected by a half-bridge to an alternating voltage phase conductor via semiconductor switches, where each semiconductor switch has a series connected separate fuse, and where the method includes detecting a defective semiconductor switch that permanently remains in an electrically conductive state and incrementally melting the fuse of the defective semiconductor switch by short-circuiting the positive and the negative lines to each other multiple times via the defective semiconductor switch and via at least two others of the semiconductor switches, during which each short circuit lasts only one pulse duration Tsoa that is shorter than a melting duration Ta needed by the fuse to melt in the event of a continuous short circuit such that the converter robustly reacts in the event of a permanent short circuit caused by one of the semiconductor switches.