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:
Jan. 22, 2008
Filed:
Apr. 28, 2006
Gunnar Asplund, Ludvika, SE;
Ying Jiang Häfner, Ludvika, SE;
Johan Lindberg, Göteborg, SE;
Peter Lundberg, Västeräs, SE;
Jan Svensson, Västeräs, SE;
Rolf Pålsson, Saxdalen, SE;
Gunnar Asplund, Ludvika, SE;
Ying Jiang Häfner, Ludvika, SE;
Johan Lindberg, Göteborg, SE;
Peter Lundberg, Västeräs, SE;
Jan Svensson, Västeräs, SE;
Rolf Pålsson, Saxdalen, SE;
ABB Technology Ltd., Zürich, CH;
Abstract
A voltage source converter for high power application containing a plurality of valves, each valve containing a plurality of extinguishable semiconducting elements, and a valve control unit containing a computer and a pulse-width modulator providing an executing control signal for controlling the semiconducting elements. The valve control unit includes a first control containing a first pulse-width modulator for providing a first pulse-width modulation signal, a second control containing a second pulse-width modulator for providing, a second pulse-width modulation signal, a mode detector, and a selector connected to the first and second pulse-width modulator for selecting in dependence of the mode detector the executing pulse-width modulation signal.