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Modeling and simulation of hydrostatic transmission system with energy regeneration using hydraulic accumulator …
A new hydraulic closed-loop hydrostatic transmission (HST) energy-saving system is proposed in this paper. The system improves the efficiency of the primary power source. Furthermore, the system is energy regenerative, highly efficient even under partial load conditions. It can work in either a flow or pressure coupling configuration, …
Energy Saving of an Electric Forklift with Hydraulic Accumulator
Ahn et al. proposed a novel hydraulic hybrid forklift for energy saving stored in the accumulator. The results showed that the maximum energy-saving efficiency could reach 56% in one cycle and the ...
Hydraulic accumulators | HYDAC
They are versatile, make your machine more convenient to use, secure your hydraulic system and are used to increase the energy efficiency of hydraulic systems and for many other tasks. HYDRAULICS ARE YOUR HOME: The know-how of our hydraulic specialists extends to all accumulator types, such as bladder accumulators, piston accumulators …
Comparison of energy-saving on the speed control of the VVVF hydraulic elevator with and without the pressure accumulator …
Van de Ven [23] introduced a constant hydraulic pressure non-constant gas pressure energy storage hydraulic accumulator. Bing et al. [24] studied the efficiency increase of a hydraulic elevator applied system using a hydraulic accumulator. Finally, Harris et al. [25 ...
Energy saving and performance enhancement of hydraulic
In this study, a novel double-stage hydraulic system incorporating a hydraulic controllable accumulator (HCA) was proposed to simultaneously improve the …
Hydraulic Accumulators: What Are They and Why Do We Need …
A hydraulic control system directs the flow of fluid to different devices within the system. Most accumulators don''t require any input signals from the control system directly—the fluid is usually piped directly into and out of the accumulator. However, some systems might need to open a valve at the accumulator when required, so the control ...
Energy-saving technologies for construction machinery: a review of electro-hydraulic …
With the rapid development of the global economy, more and more attention has been paid to the energy conservation of construction machinery. The hydraulic system is the key component of construction machinery, and improving its energy utilization rate has become an important means to achieve energy conservation. In …
Research on energy saving system of hydraulic excavator based on three-chamber accumulator,Journal of Energy …
The energy saving system was tested on a 21.5-ton hydraulic excavator, and the results showed that the energy consumption of the boom lifting hydraulic circuit was reduced by 47.99 %, and the engine fuel consumption was reduced by 11.42 %.
Osmotic engine converting energy from salinity difference to a hydraulic accumulator by utilizing polyelectrolyte hydrogels …
As shown in Fig. 1, the osmotic engine consists of the following components: (a) a large cylinder with a diameter of 240 mm, which contains the hydrogel, (b) a weight which increases the downward motion during the shrinking process, (c) a lever which connects the hydrogel cylinder to (d) an oil hydraulic cylinder. ...
Energy-saving strategies on power hydraulic system: An overview …
Xu B, Yang J, Yang H. Comparison of energy-saving on the speed control of the VVVF hydraulic elevator with and without the pressure accumulator. Mechatronics 2005; 15: 1159–1174. Crossref
Energy improvement of fineblanking press by valve-pump combined controlled hydraulic system with multiple accumulators …
To improve the useful energy efficiency of a hydraulic fine-blanking press (HFBP), a hydraulic system using a combined valve-pump combined with multiple accumulators and comprising a valve-controlled circuit and pump-controlled circuit, was presented based on the working-process load characteristics. ...
Energy Saving of an Electric Forklift with Hydraulic Accumulator
Energy saving of construction machinery is necessary to reduce the energy consumption and pollution. A novel hydraulic hybrid forklift for energy saving is proposed in this paper, as well as the control strategy. A hydraulic accumulator is used in the system to store ...
Energy-saving technologies for construction machinery: a review …
The hydraulic system is the key component of construction machinery, and improving its energy utilization rate has become an important means to achieve …
Output feedback control for energy-saving asymmetric hydraulic servo system based …
Section snippets Working principle of the integrated control strategy The proposed hydraulic servo system is demonstrated in Fig. 1. It consists of a double-acting asymmetric cylinder, a fixed displacement pump, two hydraulic accumulators with high and low pressure levels, respectively, namely, HP-accumulator and LP-accumulator, a …
A study on an energy saving electro-hydraulic excavator
For example, a novel hydraulic energy-saving system 1 for hydrostatic drives is proposed by ... (HST) with novel energy storage, including a hydraulic accumulator and a flywheel. Then, a new ...
Intermittently Operated Oil Hydraulic Pump Unit With Accumulator to Save Energy and Hydraulic …
Efforts to conserve energy have been made in a number of fields due to a shortage of energy resources, such as oil, and the need to protect the Earth''s environment. In the field of hydraulics, energy-saving pump units are very important because they consume less energy.At present, variable displacement type hydraulic pump units (VD …
An Overview of Energy Savings Approaches on Hydraulic Drive …
Moreover, 56-66.1% throttling energy saving potential is observed on an On/Off high-speed valve-controlled hydraulic system under the reduction of energy loss strategy.
Hydraulic "Batteries" Save Fuel | Power & Motion
Energy recovery systems on hydraulic excavators boast fuel savings as high as 30 to 35%. Hydropneumatic accumulators are widely used in hydraulic systems …
Analysis of energy characteristic and working performance of novel controllable hydraulic accumulator …
DOI: 10.1016/j.enconman.2020.113196 Corpus ID: 224906232 Analysis of energy characteristic and working performance of novel controllable hydraulic accumulator with simulation and experimental methods @article{Liu2020AnalysisOE, title={Analysis of energy ...
Energy improvement of fineblanking press by valve-pump combined controlled hydraulic system with multiple accumulators …
The hydraulic fine blanking machine has many advantages, such as a high power to mass ratio, high stiffness, and a strong load capacity, but only about 7% of the input electric energy can be ...
Application of Accumulator to Entire Hydraulic Injection Molding Machine and Its Energy-saving …
In order to overcome the disadvantage of overflow energy loss in conventional injection molding machine,an accumulator module installed in hydraulic injection molding machine was self-designed to save the work energy of the machine.The energy consumption data of injection molding machine with accumulator module and without accumulator module …
Hydraulic accumulator-motor-generator energy regeneration system for a hybrid hydraulic …
SUN Wei, VIRVALO T. Simulation study on a hydraulic-accumulator-balancing energy-saving system in hydraulic Boom[C]//50th National Conference on Fluid Power, Las Vegas, American, March, 13–15, 2005: 371–381. BRUUN L. …
Mathematical modelling of a hydraulic accumulator for hydraulic …
Mathematical model. A schematic of the hydraulic piston accumulator is shown in Figure 1. The housing consists of the CFRP pipe and two aluminium sealing ends. A moveable aluminium piston sealed by a gasket separates the gas chamber from the oil chamber. The gas chamber is pre-charged with nitrogen.
(PDF) Research On Energy Saving and Performance Enhancement of High-End Hydraulic Press With Controllable Accumulator
hydraulic c ylinders and hydraulic accumulator w as proposed to recovery the potential energy of the 116 bucket, the stick and the boom, which gained comprehensive energy-saving rate is 41.6 % ...
Research on energy saving system of hydraulic excavator based on three-chamber accumulator …
The energy saving system was tested on a 21.5-ton hydraulic excavator, and the results showed that the energy consumption of the boom lifting hydraulic circuit was reduced by 47.99 %, and the engine fuel consumption was reduced by …
Comparison of energy-saving on the speed control of the VVVF hydraulic elevator with and without the pressure accumulator …
Semantic Scholar extracted view of "Comparison of energy-saving on the speed control of the VVVF hydraulic elevator with and without the pressure accumulator" by Bing Xu et al. DOI: 10.1016/J.MECHATRONICS.2005.06.009 Corpus ID: 108566871 Comparison of ...
Experimental Results on an Energy Saving Method Applied to a Hydraulic …
The paper is focused on the experimental results regarding the operation of a new energy recovery system. The system is used to electrohydraulic driven a lifting system. The energy recovery method is based on the use of a hydraulic power multiplier cylinder and an accumulator. Three working scenarios are presented and the performance of the system …
Accumulator stations
HYDAC supplies fully assembled piston accumulator stations which are ready for operation, complete with all the necessary valve controls, pipe fittings and safety devices.
Products › Cross › Accumulator unit Energy reservoirs for ...
Accumulator Units are batteries of gas-pressurized vessels, filled with hydraulic fluid from the system during the low-duty phases of the working cycle. They can both provide a …
Energy Regeneration and Reuse of Excavator Swing System with Hydraulic Accumulator
The low-pressure side of the hydraulic motor can pull fluid from the tank through check valves 7 and 8. The flow direction is shown by a red line in Fig. 1 when the right side of the hydraulic motor is the output side. During the acceleration, DC 1 and DC 2 work in the left or right position based on the rotational direction of the hydraulic motor.
Energy saving and performance enhancement of hydraulic fineblanking press assisted with controllable hydraulic accumulator …
working eciency increased by 10%. Moreover, the energy eciency of the proposed system reached 45.9%, 20.35% higher than that of the traditional system, resulting in a reduction in energy consumption of 169.4 kJ per duty cycle. Keywords Hydraulic
List of energy storage power plants
This is a list of energy storage power plants worldwide, other than pumped hydro storage. Many individual energy storage plants augment electrical grids by capturing excess …
Energy-saving strategies on power hydraulic system: An overview …
Since hydraulic presses have large-scale usage in many areas [3,4] of the industry, it is important to increase energy efficiency in these hydraulic systems. When the literature is searched, it ...
Design of Energy-saving System for Hydraulic Scissor Lift Based on Accumulator…
To address this problem, a new energy-saving system based on hydraulic accumulator is proposed in this paper. A simulation model of the system is established. The simulation shows that the system can recover up to 73% of the gravitational energy while reducing the installed power of the electric motor by 60%, specifically from 5.5 kW in the baseline …
List of power stations in Georgia (country)
Hydroelectric. Big station with reservoir and their electricity generation (Mln kwh) [2] [3] #. HPP Name. Year completed. 1. 2. 2012. 2013.
An energy-saving method to reduce the installed power of hydraulic …
A lot of energy-recovery circuits have been applied in hydraulic press machines. Yan et al. [18] proposed a flywheel energy-saving system (FESS) that can store the redundant energy at no-load ...
Comparison of energy-saving on the speed control of the VVVF hydraulic elevator with and without the pressure accumulator …
Zhao et al. [3] applied VF hydraulic pump to a central air conditioning system achieving good energy saving by means of optimization. Energy-saving problems with a VF hydraulic control have also ...
Energy-Saving Adaptive Robust Control of a Hydraulic Manipulator Using Five Cartridge Valves With an Accumulator …
7046 IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 61, NO. 12, DECEMBER2014 Energy-Saving Adaptive Robust Control of a Hydraulic Manipulator Using Five Cartridge Valves With an Accumulator Lu ...
Energy-Saving Adaptive Robust Control of a Hydraulic Manipulator Using Five Cartridge Valves With an Accumulator …
DOI: 10.1109/TIE.2014.2314054 Corpus ID: 731719 Energy-Saving Adaptive Robust Control of a Hydraulic Manipulator Using Five Cartridge Valves With an Accumulator @article{Lu2014EnergySavingAR, title={Energy-Saving Adaptive Robust Control of a Hydraulic Manipulator Using Five Cartridge Valves With an Accumulator}, author={Lu …
(PDF) Energy-Saving Adaptive Robust Control of a …
Energy-Saving Adaptive Robust Control of a Hydraulic Manipulator Using Five Cartridge Valves With an Accumulator December 2014 IEEE Transactions on Industrial Electronics 61(12):7046-7054
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