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. 17, 2019
Filed:
Oct. 03, 2017
Pentair Water Pool and Spa, Inc., Cary, NC (US);
Danfoss Power Electronics A/s, Graasten, DK;
Robert W. Stiles, Jr., Cary, NC (US);
Lars Hoffmann Berthelsen, Kolding, DK;
Peter Westermann-Rasmussen, Soenderborg, DK;
Gert Kjaer, Soenderborg, DK;
Florin Lungeanu, Egersund, DK;
Pentair Water Pool and Spa, Inc., Cary, NC (US);
Danfoss Power Electronics A/S, Graasten, DK;
Abstract
A pumping system for at least one aquatic application includes a motor coupled to a pump and a controller in communication with the motor. The controller is adapted to determine a first motor speed of the motor, determine a reference power consumption using a reference flow rate and a curve of speed versus power consumption for the reference flow rate, and generate a difference value between the reference power consumption and a present power consumption. The controller drives the motor to reach a steady state condition at a second motor speed based on the difference value.