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. 03, 2023
Filed:
Mar. 15, 2018
Applicant:
Zenith Oilfield Technology Limited, Aberdeenshire, GB;
Inventor:
Amer Kassab, Aberdeenshire, GB;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 1/00 (2006.01); G01R 31/34 (2020.01); H02K 11/35 (2016.01); E21B 43/12 (2006.01); G01R 23/16 (2006.01); H02K 5/132 (2006.01); E21B 47/008 (2012.01);
U.S. Cl.
CPC ...
G01R 31/343 (2013.01); E21B 43/128 (2013.01); E21B 47/008 (2020.05); G01R 23/16 (2013.01); H02K 5/132 (2013.01); H02K 11/35 (2016.01);
Abstract
A method of monitoring the performance of a multi-phase electric motor (), wherein the electric motor comprises a plurality of stator windings () connected in a wye configuration to form a wye point. The method comprises measuring an electrical characteristic of the wye point in a time domain; based upon the measured electrical characteristic of the wye point in the time domain, determining an electrical characteristic of the wye point in the frequency domain; and deriving data indicative of at least one parameter of the performance of the electric motor based upon the determined electrical characteristic of the wye-point in the frequency domain.