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[CN 201710507911.7] A matching energy-saving mode for hydraulic press drive system
[CN 201710507911.7] A Hydraulic Machine Drive System Matching Energy Saving Mode Title: A Hydraulic Machine Drive System Matching Energy Saving Mode Application Number: CN 201710507911.7 Applicant: Hefei University of Technology Application Date: 2017-6-28 Patent Type: Invention Application The present invention discloses a hydraulic machine drive system matching energy saving mode, which is characterized by designing a drive system composed of a plurality of motor pumps with a high degree of load matching in the working cycle of the hydraulic machine; according to the pressure and time requirement of each stage in the working cycle of the hydraulic press, combined with the flow rate of all variable pumps in the selected pump set under the pressure required by each working stage of the hydraulic press, a combination of multiple variable pumps is selected to minimize the composite index of the variable pump in the unloading state in the working cycle. According to the selected variable pump, select the matching motor so that each motor is within the set load rate range in at least two working stages. Among them, for the stage of low system pressure, the load rate of the asynchronous motor is improved by increasing the working pressure of the variable pump, and its energy loss is further reduced. The invention can effectively reduce the total fixed power of the drive system, reduce the energy consumption of a working cycle of the hydraulic machine, improve the energy efficiency of the hydraulic machine of the multi-motor pump group, and reduce the cost of use.
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