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:
Mar. 24, 1998
Filed:
Jun. 26, 1996
Applicant:
Inventor:
Horst Gruning, Wettingen, CH;
Assignee:
Asea Brown Boveri AG, Baden, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
363 57 ; 363135 ;
Abstract
A converter circuit arrangement in which the gate turn-off thyristors are driven hard, i.e., the GTO is driven with a gate current configured in such a way that the turn-off gain IS/IGpeak is distinctly less than 3 so as to result in an anode voltage rise of at least 1 kV/.mu.s. The snubber circuit of such driven thyristors may be designed to include only a small number of elements. The voltage rise limiter includes at least one capacitor connected in parallel with one of the reverse-connected parallel diodes. The current rise limiter includes a parallel circuit having an inductor and a current limiting diode.