Control algorithm of variable speed pumping system

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United States of America Patent

PATENT NO 9605680
SERIAL NO

14325887

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Abstract

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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 the flow rate indicative value toward a constant. A value indicative of flow pressure is determined and the motor is controlled to adjust the flow pressure indicative value toward a constant. A selection is made between flow rate control and flow pressure control. In another aspect, the pump is controlled to perform a first operation, and is operated to perform a second water operation. Control of operation of the pump to perform the first water operation is altered in response to operation of the pump to perform the second operation.

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Patent Owner(s)

Patent OwnerAddress
DANFOSS POWER ELECTRONICS A/SULSNAES 1 GRASTEN DK-6300

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Berthelsen, Lars Hoffmann Kolding, DK 49 2349
Cox, Everett Sanford, US 6 272
Hansen, Arne Fink Graasten, DK 15 821
Harvest, Nils-Ole Nordborg, DK 14 792
Hruby, Daniel J Sanford, US 20 1021
Kjaer, Gert Soenderborg, DK 25 1343
Lungeanu, Florin Graasten, DK 25 1422
Morando, Alberto Soenderborg, DK 9 504
Murphy, Kevin Quartz Hill, US 75 1717
Robol, Ronald B Savannah, US 39 1721
Runarsson, Einar Kjartan Soenderborg, DK 21 1076
Steen, Donald Sanford, US 5 271
Stiles,, Jr Robert W Cary, US 57 1681
Westermann-Rasmussen, Peter Soenderborg, DK 19 1141
Woodcock,, Jr Walter Sanford, US 2 32
Yahnker, Christopher Valencia, US 8 169

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