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:
Oct. 02, 2018
Filed:
Oct. 03, 2013
Abb Research Ltd., Zurich, CH;
Pedro Rodriguez, Vasteras, SE;
Cajetan Pinto, Mumbai, IN;
Maciej Orman, Radziszow, PL;
Michal Orkisz, Krakow, PL;
Ulf Ahrend, Karlsruhe, DE;
Rolf Disselnkötter, Mauer, DE;
Pawel Rzeszucinski, Kedzierzyn-Kozle, PL;
James Ottewill, Ruislip Middlesex, GB;
ABB Research Ltd., Zurich, CH;
Abstract
A method for identifying a fault condition in an electrical machine in which at least a stator or a rotor has parallel winding branches is disclosed. A measurement is carried out for obtaining a set of circulating current values between two parallel winding branches of which each winding branch includes a single coil. A frequency analysis is applied on the set of circulating current values to obtain at least one frequency component. A fault condition of the electrical machine is determined on the basis of the at least one frequency component.