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. 03, 1984
Filed:
May. 21, 1982
Henri Godfroid, Valdoie, FR;
CGEE Alsthom, Levallois-Perret, FR;
Abstract
Apparatus for controlling a static AC/AC thyristor converter which supplies power to a synchronous rotating machine (7) at a variable frequency. The converter comprises a 'machine' bridge (PM) and a 'mains' bridge (PRA, PRB) connected to each other by a first conductor (9) and by a second conductor (10), together with an auxiliary connection (8) which connects the neutral point of the synchronous machine to a point (11) at the 'mains' bridge end via which point current can be returned to a transformer which supplies power to said 'mains' bridge. The control apparatus comprises means for controlling the 'mains' bridge in such a way that the sum of the currents IA+IB of said first conductor (9) and of said second conductor (10) interconnecting the 'machine' and 'mains' bridges are equal to an average reference current.