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. 27, 1996
Filed:
Mar. 10, 1995
Nagataka Seki, Tokyo, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A power converting apparatus for system interconnecting includes a self-commutated converter, DC supply or direct capacitor connected to a DC terminal of the self-commutated converter, a series reactor or transformer, connected between an AC terminal of the self-commutated converter and an AC power system. The self-commutated converter includes a plurality of semiconductor valves connected in bridge between P bus and N bus of the DC supply. The semiconductor valves respectively includes a plurality of series-connected nonlatch devices, a series snubber circuit connected in series to the plurality of series-connected nonlatch devices, and a voltage balancing resistor and a plurality parallel snubber circuits respectively which includes a clipper circuit and a series circuit. The series circuit comprises a snubber capacitor and snubber resistor.