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:
Apr. 17, 2018
Filed:
Feb. 25, 2015
Applicant:
Onesubsea Ip Uk Limited, London, GB;
Inventor:
Aage Hadler-Jacobsen, Nesttun, NO;
Assignee:
ONESUBSEA IP UK LIMITED, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/34 (2006.01); G01R 31/02 (2006.01); H02P 29/02 (2016.01); H02J 3/26 (2006.01); H02J 13/00 (2006.01);
U.S. Cl.
CPC ...
G01R 31/343 (2013.01); G01R 31/025 (2013.01); H02J 3/26 (2013.01); H02J 13/00 (2013.01); H02P 29/02 (2013.01); Y02E 40/50 (2013.01);
Abstract
According to some embodiments, two or more subsea motors are run simultaneously from a common topside frequency converter and a single set of three-phase cores within an umbilical cable. The subsea distribution system, which may include a subsea transformer distributes the power to the electrical motors. Current sensor and measuring electronics are used to measure current on one or more of the phases used to drive each motor. Measurement data is transmitted to the surface where an analysis system is used to detect possible load imbalance conditions between the motors.