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:
Jun. 11, 2019
Filed:
Sep. 15, 2015
Fmc Kongsberg Subsea As, Kongsberg, NO;
Helge Grøtterud, Kongsberg, NO;
Terje Hollingsæter, Lommedalen, NO;
FMC Kongsberg Subsea AS, Kongsberg, NO;
Abstract
A method of operating a system () for pumping a fluid, which system comprises: a pump () for pumping the fluid; and a variable speed motor () for driving the pump (). The method comprises the steps of: identifying a first system parameter (PI); identifying a second system parameter (P) which is a function of the torque of the pump; setting a target value (P) for a first system parameter; monitoring the first system parameter (PI); establishing a target value (P) for the second system parameter based on the difference between the target value and the measured value of the first system parameter; monitoring the second system parameter; and regulating the rotational speed of the pump such that the difference between the monitored value and the target value of the second system parameter is minimized. A system for implementing the method is also disclosed.