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, 2013
Filed:
Mar. 06, 2007
Applicants:
Donald Colin Murray Oates, Brocton, GB;
Milan Saravolac, Levallois Perret, FR;
Inventors:
Donald Colin Murray Oates, Brocton, GB;
Milan Saravolac, Levallois Perret, FR;
Assignee:
Alstom Grid SAS, Paris, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05F 1/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
A hybrid on-load tap changer, for use in high voltage alternating current power transmission, including a selector and a diverter having two legs defining respective current paths. Each leg includes a pair of opposed first and second semiconductor switches. The hybrid on-load tap changer also includes a controller configured to switch on one of the first or second semiconductor switches of a given leg at a predetermined point within the alternating current cycle so as to commutate off a desired semiconductor switch in the other leg.