Speed control

US10502203B2 · kind B2 · utility

Assignees

• Pentair Water Pool and Spa, Inc. · US
• DANFOSS POWER ELECTRONICS A/S · DK

Inventors

• Robert W. Stiles, Jr. · Cary, US
• Lars Hoffmann Berthelsen · Kolding, DK
• Ronald B. Robol · Sanford, US
• Christopher R. Yahnker · Raleigh, US
• Daniel J. Hruby · Sanford, US
• Kevin Murphy · Quartz Hill, US
• Einar Kjartan Runarsson · Dörpen, DE
• Arne Fink Hansen · Sweetgum Street, DK
• Florin Lungeanu · Beijing, CN
• Peter Westermann-Rasmussen · Skanderborg, DK

Key dates

• Filing date: Feb 5, 2016
• Grant date: Dec 10, 2019
• Expiry date: Feb 5, 2036

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49817
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A pumping system for an aquatic application includes a motor to be coupled to a pump and a controller in communication with the motor. The controller is configured to determine a speed of the motor, determine a current performance value of the pumping system, compare the current performance value to a referenced performance value, determine an adjustment value based upon the comparison of the reference and current performance values, and adjust a speed of the motor based on the adjustment value.