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:
Jul. 16, 2019
Filed:
Jan. 31, 2017
Abb Schweiz Ag, Baden, CH;
Marco Bellini, Schlieren, CH;
Jan Vobecky, Lenzburg, CH;
ABB Schweiz AG, Baden, CH;
Abstract
A thyristor is disclosed with a plurality of emitter shorts at points in the cathode region. The points define a Delaunay triangulation with a plurality of triangles. For a first subset of triangles a coefficient of variation of the values qwith l∈Sis smaller than 0.1, and/or an absolute value of a skewedness of the geometric quantities qwith l∈Sis smaller than 5, and/or a Kurtosis of the geometric quantities qwith l∈Sis smaller than 20. For a second subset of triangles, a quotient of a standard deviation of the quantities qwith m∈Sand a mean squared value of the geometric quantity qwith l∈Sis less than 1, and/or a quotient of a number of triangles in the second subset and a number of triangles in the first subset is less than 1.0×10.