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:
Apr. 20, 1993
Filed:
Apr. 09, 1991
Peter Dahler, Remigen, CH;
Michael Hausler, Weilheim, DE;
Asea Brown Boveri Ltd., Baden, CH;
Abstract
A two-quadrant converter having a connected superconducting magnetic memory used as a chopper circuit or an actuator for stabilizing networks and for short-term bridging of power failures (e.g., uninterrupted power supply). For example, a two-quadrant converter is connected on the input side to an intermediate d.c. circuit of a converter whose intermediate circuit voltage is stabilized by an indirect capacitor. A magnetic memory is charged and discharged, respectively with energy in cyclic intervals, i.e. in conjunction with interposed free-wheeling intervals. Charging takes place via triggered thyristors, discharging via conducting diodes, with blocked thyristors. When the magnetic memory is in a charged state and is to be neither charged nor discharged over lengthy intervals, its current can be conducted in the free wheel via a closed mechanical switch connected in parallel.