Method, performance-optimized operation of an electric motor driven pump in the case of low volume flows

摘要

The invention relates to a method for performance-optimized operation of an electric motor driven pump in a hydraulic system in the case of very low volume flows (q), wherein the desired delivery height (h) of the pump as a function of the volume flow (q) along a predetermined characteristic curve (k) is regulated. The desired delivery height (h) is rotated in relation to the preset characteristic curve (k) is lowered, if the volume flow (q) a reference value (q _ ref) is below a maximum of one tenth, preferably a twentieth of the maximum volume flow (q _ max) on the characteristic curve (k), which is as long as the lowering takes place, as the volume flow (q) below the volume current reference value (q _ ref), and a conveyor heights minimum value (h _ min) is not yet reached. Furthermore, the invention relates to an electromotively driven pump with a control - and electronic control unit, which is adapted for performing this method, as well as a computer program product including instructions for carrying out the method for operating an electromotively operated pump, if it is in a control - and regulating electronic unit of the pump is designed.