| 摘要 |
The invention relates to a method for operating an electric-motor-driven centrifugal pump (3) in a hydraulic system (4) having at least one self-controlled load, wherein a gradient (dQakt/dt) of the volumetric flow rate (Q akt ) of the centrifugal pump (3) is determined and the current setpoint delivery head (H _soll ) of the centrifugal pump (3) is calculated from a mathematical operation on the gradient (dQakt/dt) weighted with a gain factor (K) and the last specified setpoint delivery head (H soll,alt ). The operation describes a positive feeback between the setpoint delivery head (Hsoll) and the volumetric flow rate (Qakt). The gain factor (K) is determined from a calculation instruction, which is modified dynamically during the operation of the centrifugal pump (3) with consideration of the current operating point of the centrifugal pump (3) and with consideration of a current and/or at least one past state of the hydraulic system (4). |
