Patent ID: 11953867
Assignee: GRUNDFOS HOLDING A/S
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  G  H | IPC G  H

Claim 12:
13. A method for controlling a multi-pump system, the method comprising the steps of:
changing a number of running pumps of a multi-pump system;
receiving a signal indicative of a power consumption and information about a speed of at least one of the running pumps before and after at least two different changes of an operating parameter of the running pumps;
determining, before and after at least two different changes of the operating parameter of the running pumps, without measurement of a differential pressure and of a flow, at least two approximated pump characteristics, wherein each of the approximated pump characteristics is unambiguously defined by a pair of parameters; and
selectively changing the number of operating pumps based on the pair of parameters.