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. 27, 2015
Filed:
Oct. 18, 2011
Applicants:
Michael J. Metala, Murrysville, PA (US);
Werner Yzelman, Murrysville, PA (US);
Inventors:
Michael J. Metala, Murrysville, PA (US);
Werner Yzelman, Murrysville, PA (US);
Assignee:
Siemens Energy, Inc., Orlando, FL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F 13/00 (2006.01); H02K 15/02 (2006.01); G01R 31/34 (2006.01);
U.S. Cl.
CPC ...
H01F 13/006 (2013.01); H02K 15/02 (2013.01); G01R 31/34 (2013.01);
Abstract
A method and apparatus for determining and for reducing magnetism in a generator stator core (). The method includes extending one or more conductors () proximate the core, applying a polarity-reversing excitation voltage to the one or more conductors, and reducing an amplitude of the voltage over time, wherein the voltage causes current to flow in the conductors, the current generating a magnetic field that demagnetizes the core. The method and apparatus are useful for determining hot spots in the core.