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:
Mar. 14, 2017
Filed:
Sep. 18, 2014
Applicant:
Siemens Aktiengesellschaft, München, DE;
Inventors:
Edom Lemma, Vejle, DK;
Arwyn Thomas, Cheshire, GB;
Assignee:
SIEMENS AKTIENGESELLSCHAFT, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 11/00 (2016.01); H02P 25/24 (2006.01); H02K 7/18 (2006.01); F03D 9/00 (2016.01); H02K 3/28 (2006.01);
U.S. Cl.
CPC ...
H02K 11/0094 (2013.01); F03D 9/002 (2013.01); H02K 3/28 (2013.01); H02K 7/183 (2013.01); H02K 11/20 (2016.01); H02P 25/24 (2013.01); H02K 7/1838 (2013.01); H02K 2201/03 (2013.01); Y02E 10/725 (2013.01);
Abstract
An electric generator arrangement with a stator being equipped with at least two opposed phase windings, each winding comprising at least two sub-windings in series is provided. The arrangement also comprises a controlled varistor across the connections of the sub-windings of said opposed phase windings. A current imbalance between two opposed phase windings is measured and the varistor is controlled in such a way that the resistance of the varistor is increased when the current imbalance increases.