December 2022
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This paper will present the use of the frequency converter in the hydraulic system and simulation this system. The development of electronics creates new spaces for the development of hydraulics, not only in the field of component design, but also in systems of control and regulation. The application of electronics in hydraulics has been intensified in recent years, so in a specific area of application pumps with hydraulic-electronic regulators are replaced with pumps of constant specific volume controlled by a frequency converter. The result of the development of electronics is the improvement of the construction of frequency converters that are installed in systems with hydraulic pumps with the task of regulating pump capacity by changing the number of revolutions according to the predefined program in the processor unit. In this way, by perfecting the combination of electronic in the hydraulic system, the simplest hydraulic pump, a gear pump that has lost its position with the conventional capacity controller , can be used in an automated hydraulic system. This paper provides an overview of the application of a frequency converter in a hydraulic system with a gear pump with a constant capacity. During the working cycle, by applying the frequency converter to change the speed of the electric motor, the variable flow of the pump is left, and therefore the variable output load of the executive body in the mechatronic system. The use of frequency inverters is mostly reflected through significant energy savings in the hydraulic system. The frequency converter, changing the speed of the electric motor, allows the gear pump at the output to provide a variable flow. In addition to experimental data, it is also possible to display simulation diagrams in the Matlab software package.