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. 06, 2021
Filed:
Aug. 19, 2019
Abb Schweiz Ag, Baden, CH;
Juergen Steinke, Albbruck, DE;
Philippe Maibach, Muhen, CH;
ABB SCHWEIZ AG, Baden, CH;
Abstract
The application discloses an arrangement of switches for a voltage source converter cell, the voltage source converter cell having two AC terminals, wherein the arrangement of switches forms a number of parallel series circuits (branches, current paths), wherein the switches in each of the series circuits paths are being controlled by external signals to alter a conductivity status of the switches between an 'ON'-state and an 'OFF'-state. The external signals are generated by one or more control units, and the two AC terminals are each connected to subsets of the series circuits of the switches. The control units comprises failure detection means, the failure detection means being adapted to determine a defective switch in the series circuits by predetermined conditions. The control units are further configured to output a control signal to alter a conductivity condition of each of the switches in the series circuits in such a manner, that a short circuit between the two AC terminals is created, if one of the switches is determined as being defective according to the predetermined conditions.