As industry develops, many problems such as environmental problems and depletion of energy resources such as natural resources, underground resources and crude oil arise. In order to protect our global environment, it is necessary to take measures to reduce our energy consumption and increase the ef...
As industry develops, many problems such as environmental problems and depletion of energy resources such as natural resources, underground resources and crude oil arise. In order to protect our global environment, it is necessary to take measures to reduce our energy consumption and increase the efficiency of energy use. Especially in machine industry, the performance of hydraulic equipment which is the source of power and energy in industry and the restrictions on environment and noise are continuously talked for years. The endless efforts to reduce the energy consumption of hydraulic equipment have drastically improved the performance of them in terms of increase of efficiency, reduction of energy and power, and reduction of noise. The topic of this study is to research on the low power and low noise inverter control board. As the load torque of the variable speed hydraulic unit is proportional to the numbers of its rotation. Therefore it is necessary to reduce the loss of energy in rotational and linear motion, i.e. maximizing the efficiency of pump by maintaining high precision and high wear resistance of machine parts. An optimized circuit of a hydraulic pump of variable speed was designed using modelling of pump and the analysis results of the pump. And the suggested reduction of power consumption technology was tested and the stability and reliability of quality of test equipment were observed using inverter control board and from the research of testing equipment.
In this paper, the background, the goals, and the contents of the study were first described. Secondly, the inverter algorithm of the variable hydraulic unit driving motor and pump were described. Thirdly, the characteristics and circuit design of the mechanism of the inverter control board were suggested. Next, kinematic theory setting of the variables which affect on variable control board and interpretation of the results were used as the references for the study. Fifthly, optimization was suggested for systematic design and manufacture of variable hyraulic driven control unit to coincide with the purpose of this study. Sixthly, the testing conditions were established and test was conducted. The test results were compared and analyzed. The test results were suggested. The implication of the study and the fuure research direction and energy saving method were suggested. Finally, the securement of source technology for the inverter control board which saves consumption power and was acquired by analyzing the results of experiment and the variable speed hydraulic unit were suggested. In order to get the results of this study, testing conditions were established. The test results showed that the power consumption of new hydraulic unit is reduced by more than 50% compared to the conventional hydraulic unit (standard: 100%). For the noise of the hydraulic unit, the noise of the conventional hydraulic system was 80db but that of new hydraulic system was about 60db, i.e. about 25% lower than that of the conventional unit. And, from the oil temperature test, the temperature of the conventional hydraulic system was increased by about 12℃. But, in this new hydraulic system, the temperature was increased by 5℃, thus reducing the heat from the unit as much as 58%. And the target of the response of the conventional hydraulic unit was 0.1 second. This new device showed less than 0.1 second, satisfactory resulrs.
For the future study, based on the energy reduction characteristics of the variable piston pump which were obtained from this study, it is suggested to realize the design of inverter control board circuit with vane pump which can be upgraded by applying the results of this study. It is hoped that this design can be successfully applied to machine tool, transportation equipment and factory automation device in all industries in a way that it can properly compensate the variables of the temperature change and property change of the hydraulic oil and other external environments and affect a lot in energy saving and application technology utilization.
As industry develops, many problems such as environmental problems and depletion of energy resources such as natural resources, underground resources and crude oil arise. In order to protect our global environment, it is necessary to take measures to reduce our energy consumption and increase the efficiency of energy use. Especially in machine industry, the performance of hydraulic equipment which is the source of power and energy in industry and the restrictions on environment and noise are continuously talked for years. The endless efforts to reduce the energy consumption of hydraulic equipment have drastically improved the performance of them in terms of increase of efficiency, reduction of energy and power, and reduction of noise. The topic of this study is to research on the low power and low noise inverter control board. As the load torque of the variable speed hydraulic unit is proportional to the numbers of its rotation. Therefore it is necessary to reduce the loss of energy in rotational and linear motion, i.e. maximizing the efficiency of pump by maintaining high precision and high wear resistance of machine parts. An optimized circuit of a hydraulic pump of variable speed was designed using modelling of pump and the analysis results of the pump. And the suggested reduction of power consumption technology was tested and the stability and reliability of quality of test equipment were observed using inverter control board and from the research of testing equipment.
In this paper, the background, the goals, and the contents of the study were first described. Secondly, the inverter algorithm of the variable hydraulic unit driving motor and pump were described. Thirdly, the characteristics and circuit design of the mechanism of the inverter control board were suggested. Next, kinematic theory setting of the variables which affect on variable control board and interpretation of the results were used as the references for the study. Fifthly, optimization was suggested for systematic design and manufacture of variable hyraulic driven control unit to coincide with the purpose of this study. Sixthly, the testing conditions were established and test was conducted. The test results were compared and analyzed. The test results were suggested. The implication of the study and the fuure research direction and energy saving method were suggested. Finally, the securement of source technology for the inverter control board which saves consumption power and was acquired by analyzing the results of experiment and the variable speed hydraulic unit were suggested. In order to get the results of this study, testing conditions were established. The test results showed that the power consumption of new hydraulic unit is reduced by more than 50% compared to the conventional hydraulic unit (standard: 100%). For the noise of the hydraulic unit, the noise of the conventional hydraulic system was 80db but that of new hydraulic system was about 60db, i.e. about 25% lower than that of the conventional unit. And, from the oil temperature test, the temperature of the conventional hydraulic system was increased by about 12℃. But, in this new hydraulic system, the temperature was increased by 5℃, thus reducing the heat from the unit as much as 58%. And the target of the response of the conventional hydraulic unit was 0.1 second. This new device showed less than 0.1 second, satisfactory resulrs.
For the future study, based on the energy reduction characteristics of the variable piston pump which were obtained from this study, it is suggested to realize the design of inverter control board circuit with vane pump which can be upgraded by applying the results of this study. It is hoped that this design can be successfully applied to machine tool, transportation equipment and factory automation device in all industries in a way that it can properly compensate the variables of the temperature change and property change of the hydraulic oil and other external environments and affect a lot in energy saving and application technology utilization.
주제어
#Efficiency of energy Energy saving Inverter algorithm Variable speed hydraulic unit Hydraulic pump Hydraulic system Swash plate
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