09605680 is referenced by 2 patents and cites 996 patents.

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.

Title
Control algorithm of variable speed pumping system
Application Number
14/325887
Publication Number
9605680 (B2)
Application Date
July 8, 2014
Publication Date
March 28, 2017
Inventor
Florin Lungeanu
Graasten
DK
Alberto Morando
Soenderborg
DK
Arne Fink Hansen
Graasten
DK
Einar Kjartan Runarsson
Soenderborg
DK
Walter Woodcock Jr
Sanford
NC, US
Christopher Yahnker
Valencia
CA, US
Nils Ole Harvest
Nordborg
DK
Gert Kjaer
Soenderborg
DK
Peter Westermann Rasmussen
Soenderborg
DK
Daniel J Hruby
Sanford
NC, US
Kevin Murphy
Quartz Hill
CA, US
Donald Steen
Sanford
NC, US
Everett Cox
Sanford
NC, US
Ronald B Robol
Savannah
GA, US
Lars Hoffmann Berthelsen
Kolding
DK
Robert W Stiles Jr
Cary
NC, US
Agent
Quarles & Brady
Assignee
Danfoss Drives
DK
Pentair Water Pool and
NC, US
IPC
F04D 15/00
F04B 23/08
F04F 5/00
G05D 7/00
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