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. 05, 2016
Filed:
Aug. 31, 2010
Shuki Wolfus, Kiryat Ono, IL;
Yossef Yeshurun, Ganei Tikva, IL;
Alexander Friedman, Lod, IL;
Vladimir Rozenshtein, Ihud, IL;
Zvi Bar-haim, Ihud, IL;
Shuki Wolfus, Kiryat Ono, IL;
Yossef Yeshurun, Ganei Tikva, IL;
Alexander Friedman, Lod, IL;
Vladimir Rozenshtein, Ihud, IL;
Zvi Bar-Haim, Ihud, IL;
BAR ILAN Research & Development Company, Ramat Gan, IL;
RICOR Cryogenic & Vacuum Systems Limited Partnership, Ein Harod, IL;
Abstract
A three-phase current limiter () for an alternating current system includes an AC magnetic circuit having at least one AC coil (RST) for each phase of a 3-phase AC supply wound on a saturable ferromagnetic core and configured to subject respective AC coils for each phase to a common magnetic flux, and a DC magnetic circuit () for biasing the AC magnetic circuit into saturation at normal conditions. In use the AC coils are connected in series with a load and during alternate half cycles of the AC supply at least one of the AC coils produces a magnetic field that opposes a magnetic field of the DC magnetic circuit. The AC coils (R,S,T) for each phase are configured so that at least one of the AC coils exhibits unbalanced magnetic impedance relative to remaining ones of the AC coils for each phase.