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:
Nov. 25, 1986
Filed:
Jan. 16, 1985
Patrick Charles, Mareil sur Mauldre, FR;
Cgee Alsthom, , FR;
Abstract
The thyristor control pulse generator consists of a dual slope sawtooth signal generator (11, 13, 17) providing a signal U.sub.sy with slopes a and 2a, said sawtooth generator comprising an input (23) for resetting the signal to zero in response to each generated pulse .theta. and means (15) for controlling the switching of the signal slope from value a to value 2a at the time the current in the reactive power regulating inductor becomes cancelled. A comparator (19) compares said signal U.sub.sy to a control voltage U.alpha. to which a correcting signal .DELTA.U.alpha. is added in a summing circuit (21), which correcting signal is developed from the means value of the current i in the inductor, given by an integrator (36) receiving at its input an image of said current, said image being taken from the output of another integrator (24) which receives the image U of the voltage across the terminals of the inductor at its input and includes a circuit (26 to 33) for resetting and holding its output to zero when no current is flowing in the inductor. The output of the comparator (19) is connected to a pulse converter (22) which outputs the thyristor firing pulses .theta..