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:
Oct. 10, 1978
Filed:
Sep. 09, 1976
Applicant:
Inventor:
Hans Skoog, Vasteras, SE;
Assignee:
ASEA AB, Vasteras, SE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P / ;
U.S. Cl.
CPC ...
318331 ; 3183 / ; 318327 ; 318317 ; 318459 ; 318434 ;
Abstract
A static convertor with DC terminals for connection to a load object with a variable electromotive force includes a control arrangement for controlling the direct voltage of the convertor between maximum and minimum values, an arrangement for controlling the minimum value being connected to and dependent on the output of a sensing device which senses a quantity corresponding to the e.m.f. of the load object. The minimum value is limited to an upper value at which the commutation ability of the convertor is at least as great as the expected maximum direct current.