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. 10, 2019
Filed:
Sep. 15, 2017
Applicant:
Rolls-royce Plc, London, GB;
Inventors:
Sivakumar Nadarajan, Singapore, SG;
Amit K. Gupta, Singapore, SG;
Vaiyapuri Viswanathan, Singapore, SG;
Assignee:
ROLLS-ROYCE plc, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 31/34 (2006.01); G01H 1/00 (2006.01); G01M 1/16 (2006.01); G01H 3/04 (2006.01); G01H 3/08 (2006.01);
U.S. Cl.
CPC ...
G01R 31/346 (2013.01); G01H 1/003 (2013.01); G01H 3/04 (2013.01); G01M 1/16 (2013.01); G01H 3/08 (2013.01);
Abstract
A method for diagnosing a fault condition in an electric machine includes measuring at least one physical parameter generated during operation of the electric machine; analyzing the or each measured parameter in a frequency domain; and determining whether the electric machine has a stator or rotor winding fault based on a comparison of an amplitude of the or each analyzed parameter at a first predetermined frequency and a first threshold amplitude for the first frequency. The at least one physical parameter includes a sound generated by the electric machine.