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Robert W Stiles Jr, Lars Hoffmann Berthelsen, Ronald B Robol, Christopher R Yahnker, Daniel J Hruby, Kevin Murphy, Einar Kjartan Runarsson, Arne Fink Hansen, Florin Lungeanu, Peter Westermann Rasmussen: Speed control. Pentair Water Pool and, Danfoss Low Power Drives a Division of Danfoss, Quarles & Brady, October 25, 2011: US08043070 (25 worldwide citation)

A pumping system for moving water of a swimming pool includes a water pump, an infinitely variable speed motor, and an arrangement for operating the motor. In one example, the pumping system includes a memory configured to store a plurality of retained speed values, an arrangement for providing a pl ...


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STILES ROBERT W, BERTHELSEN LARS HOFFMANN, WESTERMANN RASMUSSEN PETER, KJAER GERT, LUNGEANU FLORIN: SYSTEME DE REGULATION DE DEBIT, FLOW CONTROL. PENTAIR WATER POOL AND, DANFOSS LOW POWER DRIVES A DIVISION OF DANFOSS DRIVES, PENTAIR WATER POOL AND, DANFOSS LOW POWER DRIVES A DIVISION OF DANFOSS DRIVES, FINLAYSON & SINGLEHURST, April 2, 2013: CA2672410 (13 worldwide citation)

A pumping system for moving water of a swimming pool includes a water pump and a variable speed motor. The pumping system further includes means for determining a first motor speed of the motor, means for determining first and second performance values of the pumping system, and means for comparing ...


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Robert W Stiles, Lars Hoffmann Berthelsen, Ronald B Robol, Christopher R Yahnker, Everett Cox, Donald Steen, Kevin Murphy, Walter J Woodcock, Daniel J Hruby, Peter Westermann Rasmussen, Gert Kjaer, Einar Kjartan Runarsson, Arne Fink Hansen, Alberto Morando, Florin Lungeanu, Nils Ole Harvest: Control algorithm of variable speed pumping system. Pentair Water Pool and, Danfoss Low Power Drives a division of Danfoss Drive, Pearne & Gordon, May 24, 2007: US20070114162-A1

A pumping system includes a pump for moving water. In one aspect, this is in connection with performance of an operation. The system includes a variable speed motor operatively connected to drive the pump. A value indicative of flow rate of water is determined and the motor is controlled to adjust t ...


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Robert W Stiles, Lars Hoffmann Berthelsen, Peter Westermann Rasmussen, Gert Kjaer, Florin Lungeanu: Flow control. Pentair Water Pool And, Danfoss Low Power Drives a division of Danfoss Drives, Pearne & Gordon, July 5, 2007: US20070154320-A1

A pumping system for moving water of a swimming pool includes a water pump and a variable speed motor. The pumping system further includes means for determining a first motor speed of the motor, means for determining first and second performance values of the pumping system, and means for comparing ...


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Kidd Melissa Drechsel, Genaw William James, Pasche Micheal Robert, Baase Gary Thomas II, Berthelsen Lars Hoffmann, Fink Rasmus, Holm Martin Skov: System and method for motor drive control pad and drive terminals. Sta Rite, Danfoss Low Power Drives A Division of Danfoss Drives, ye yong, April 6, 2011: CN201010241942

The invention relates to a system and a method for a motor drive control pad and drive terminals. Embodiments of the invention provide a variable frequency drive system and a method of controlling a pump driven by a motor with the pump in fluid communication with a fluid system. The drive system and ...