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:
Dec. 09, 2014
Filed:
Jan. 05, 2011
Applicants:
John James Anthony Cullen, Derby, GB;
Stephen Andrew Long, Carmel, IN (US);
Inventors:
John James Anthony Cullen, Derby, GB;
Stephen Andrew Long, Carmel, IN (US);
Assignee:
Rolls-Royce PLC, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 7/08 (2006.01); H02P 29/02 (2006.01); H02P 25/22 (2006.01);
U.S. Cl.
CPC ...
H02P 29/022 (2013.01); H02P 25/22 (2013.01);
Abstract
A fault tolerant electrical machine including: a plurality of phases; a detector arranged to detect a fault in at least one of the phases; and a controller arranged to intentionally cause a fault in at least one other of the phases such that the vector sum of the second harmonic power vectors of the remaining phases is zero.