Patent
Starting switching means for a single-phase asynchronous motor
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TLDR
In this article, the starting switch means for a single phase asynchronous motor having a symmetrical controlled semiconductor valve as a starting switch is described. But the starting switching means is enclosed, along with the electric motor, in the housing of a refrigeration unit and the valve and an ohmic resistor is in series with the starting winding of the motor.Abstract:
The invention relates to starting switch means for a single phase asynchronous motor having a symmetrical controlled semiconductor valve as a starting switch. The valve and an ohmic resistor is in series with the starting winding of the motor. A PTC resistor is connected to the control electrode of the valve and is arranged parallel to the valve and the ohmic resistor. The starting switching means is enclosed, along with the electric motor, in the housing of a refrigeration unit.read more
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Patent
Pump controller system and method
TL;DR: In this article, a method and apparatus for a pump control system is described, which can perform self-calibrating procedure, provide precise motor speed control, provide a limp mode before shutting down the motor when system parameters are exceeded and/or fault conditions occur, detect fault conditions, and can store fault conditions for later retrieval.
Patent
Variable speed pumping system and method
TL;DR: In this paper, a variable speed pumping system with a water pump for moving water in connection with performance of an operation upon the water is described. But this system is not suitable for aquatic applications.
Patent
Control algorithm of variable speed pumping system
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,Niles Ole Harvest +15 more
TL;DR: In this paper, a variable speed motor is used to drive a pump for moving water and 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.
Patent
Pumping System with Two Way Communication
Robert W. Stiles,Lars Hoffmann Berthelsen,Ronald B. Robol,Christopher R. Yahnker,Daniel J. Hruby,Kevin Murphy,Edward Brown,David Maccallum,Dennis Dunn,Kenneth N. Clack,Einar Kjartan Runarsson,Alberto Morando +11 more
TL;DR: In this paper, a two-way communication between the arrangement for controlling and the auxiliary device is presented. But the auxiliary devices are not connected to the arrangement of controlling, and there is no communication between them.
Patent
Pumping System with Power Optimization
Robert W. Stiles,Lars Hoffmann Berthelsen,Ronald B. Robol,Christopher R. Yahnker,Einar Kjartan Runarsson +4 more
TL;DR: In this article, a water pump and a variable speed motor were used to move water of a swimming pool, including a target volume amount of water and an operational time period, and an optimized flow rate value was determined based upon power consumption.
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