Controlling a pump without pressure nor flow measurement 1

[Yobbo]

I have seen the product Pumpsmart on the internet, that seems to be able to control a pump just by measuring the speed and the current of the pump, whereas a few data from the pump characteristics have to be input up front in order to make the right calculations. Somehow there seems to exist a black box model of a pump, that can be described by the design flow, the power at design condition, the power at shut-off condition and the speed. I would like to learn more about the algorithms behind it or find some references, where I can find more about it.
Can you help me with this?

 

[JJPellin]

I found this paper written for the system developed by Goulds.

http://www.gouldspumps.com/download_files/Technews/smart_pumping_system.pdf

Johnny Pellin

 

[MikeHalloran]

The system appears to be similar to sensorless energy efficient variable speed air moving fans that have been in production for home air conditioners for about ten years. Google will find a few papers that actually discuss the sensing technology and the algorithms, in much more detail than the Goulds paper provides.



Mike Halloran
Pembroke Pines, FL, USA