METHODS FOR CONTROLLING PUMP FLOW RATE BASED ON PUMP FLOW RATE ESTIMATION USING PUMP HEAD AND PERFORMANCE CURVES AND PUMP CONTROL SYSTEMS HAVING THE SAME

摘要

Systems and methods for determining a pump flow (Q) of a pump are disclosed. A method for determining a pump flow (Q) of a pump includes calculating an inverse of a polynomial equation defining a DP-Q performance curve of a pump, where the inverse is a Q-DP polynomial equation defining the performance of the pump, receiving a pump head (DP) value from a pump head sensor associated with the pump, computing a pump flow based on the Q-DP polynomial equation, comparing the computed pump flow to a preset target flow rate, and automatically controlling a pump parameter of the pump such that the calculated flow rate becomes the preset target flow rate.