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:
Aug. 16, 2022
Filed:
Feb. 28, 2019
Hitachi Energy Switzerland Ag, Baden, CH;
Hitachi Energy Switzerland AG, Baden, CH;
Abstract
The present disclosure relates to a converter cell () for a power converter. The cell comprises a plurality of semiconductor devices (T) forming a half-bridge or full-bridge topology in the cell. The cell also comprises an energy storage () connected across the at least one switch leg (). The cell also comprises a crowbar leg () connected across the at least one switch leg, comprising a plurality of series connected semiconductor crowbar switches (C) arranged to short-circuit the energy storage (). The cell also comprises first and second AC terminals (A, B), wherein at least one of said AC terminals is connected to one of the at least one switch leg, between two of the plurality of series connected semiconductor devices of said switch leg, and connected to the crowbar leg, between two of the plurality of series connected crowbar switches of said crowbar leg.