PERFORMANCE ENHANCED OPERATION OF A PUMP DRIVEN BY AN ELECTRIC MOTOR USING POSITIVE-FEEDBACK

摘要

The invention relates to a method for the operation of an electric motor-driven pump for optimal power in a hydraulic system having at least one self-regulated load, wherein the desired discharge head (Hsoll) of the pump is regulated depending upon the volumetric flow (Q) thereof along an adjustable underlying characteristic curve which is determined by means of a predeterminable desired value of the characteristic curve (Hk). The volumetric flow (Q) conveyed by the pump is determined and the trend (dQ) thereof is identified, wherein depending on the volumetric flow (Q) and/or the trend (dQ) thereof the desired value of the characteristic curve (Hk) is increased if the volumetric flow (Q) rises, or decreased if the volumetric flow (Q) falls.