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:
Sep. 19, 2017
Filed:
Feb. 05, 2010
Applicants:
Mohamed Y. Haj-maharsi, Garner, NC (US);
Le Tang, Cary, NC (US);
Rafael Gutierrez, Wytheville, VA (US);
Sandeep Bala, Raleigh, NC (US);
Inventors:
Mohamed Y. Haj-Maharsi, Garner, NC (US);
Le Tang, Cary, NC (US);
Rafael Gutierrez, Wytheville, VA (US);
Sandeep Bala, Raleigh, NC (US);
Assignee:
ABB Research Ltd., Zurich, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 3/04 (2006.01); H02M 5/10 (2006.01); H02M 1/42 (2007.01); H02M 5/45 (2006.01); H02M 5/458 (2006.01);
U.S. Cl.
CPC ...
H02M 5/10 (2013.01); H02M 1/4233 (2013.01); H02M 5/4505 (2013.01); H02M 5/4585 (2013.01); Y02B 70/126 (2013.01);
Abstract
A hybrid transformer is provided that includes an electromagnetic transformer and an AC-AC converter with a DC bridge. The AC-AC converter is operable to keep the input voltage and current of the hybrid transformer substantially in phase and to reduce fluctuation in the output voltage of the hybrid transformer in the event of an increase or decrease in the input voltage.