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:
Apr. 19, 2022
Filed:
Aug. 23, 2017
Applicant:
Hitachi Energy Switzerland Ag, Baden, CH;
Inventors:
Parag Upadhyay, Morrisville, NC (US);
Mirrasoul Mousavi, Cary, NC (US);
Assignee:
Hitachi Energy Switzerland AG, Baden, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 30/14 (2006.01); H04B 1/58 (2006.01); H01F 29/10 (2006.01); H01F 17/00 (2006.01); H01F 30/12 (2006.01);
U.S. Cl.
CPC ...
H04B 1/582 (2013.01); H01F 17/0013 (2013.01); H01F 29/10 (2013.01); H01F 30/12 (2013.01); H01F 30/14 (2013.01);
Abstract
Auto-balancing transformers are disclosed for balancing a multi-phase electrical system by varying the degree of electromagnetic coupling between primary and secondary windings. The auto-balancing transformer includes a movable armature to selectively couple primary phases with two or fewer phases of the secondary system.