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Optimization of energy regeneration of hybrid hydraulic excavator

Saving energy is important and necessary for hydraulic excavators. This paper proposed a novel energy regeneration boom system. improved efficiency, and reduced costs. Shen et al. [19] analyzed an energy storage system in which a super capacitor and battery were used for energy storage in an electric vehicle. Super capacitors provide high

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An Adaptive Robust Impedance Control Considering Energy-Saving

In this article, taking the hydraulic system of mining hydraulic excavator boom and stick as the plant, an adaptive robust impedance controller based on an extended state observer and backstepping method is designed. The energy-saving operation and position tracking performance are considered in system modeling and control law design. The system effects

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A review of developments in energy storage systems for hybrid excavators

Different ESEs are adopted in different energy storing systems for energy demand. For example, flywheel is widely used in hydro systems, while accumulator is widely used in hydraulic systems [8], and battery or SC (Super Capacitor) is usually used in hybrid vehicles and construction machineries.Now people are exploring the combination of applications with a

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jzus.A2400040 matching and optimization of hybrid

the endurance and output power of electric energy storage units and motors. Hybrid systems have wider applicability and reliability. Fuel-electric hybrid and novel fuel-hydraulic excavator swing energy-saving system with a variable motor and a valve-controlled accumulator (Yu et al., 2016; Yu and Ahn, 2020).

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Energy saving of hybrid hydraulic excavator with innovative powertrain

The potential energy or kinetic energy of an actuator can be converted to electric energy by using a generator and saved in energy storage unit. A hydraulic hybrid excavator uses a hydraulic accumulator as the energy storage unit, in

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Energy Storage and Saving | Journal

Energy Storage and Saving (ENSS) is an interdisciplinary, open access journal that disseminates original research articles in the field of energy storage and energy saving. The aim of ENSS is to present new research results that are focused on promoting sustainable energy utilisation, improving energy efficiency, and achieving energy conservation and pollution reduction.

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Active power optimization control of speed closed-loop engine for

The simulation and the experimental results show that the proposed control method has a much faster response for the energy-saving operating points, which reduces the energy consumption by 9.28% and 5.56% without adding any energy storage devices to the hydraulic excavator.

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An Energy-Saving Scheme to Reduce Throttling Losses in

The enormous throttling losses are the crucial reason for the low energy efficiency of non-road mobile machinery. To achieve energy saving, a parallel electro-hydraulic hybrid drivetrain that combines an electric-hydraulic energy recovery system with a valve-controlled system is proposed. With a parallel electric-hydraulic energy recovery system, both

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Experimental analysis of slewing energy recovery potential of

Ramasamy K, Chandramohan K, Ghanta D. Energy management in plugin hybrid electric vehicles with hybrid energy storage system using hybrid approach. Energy Technol 2022; 10(10): 2200355. Crossref. Yu Y, Do TC, Park Y, et al. Energy saving of hybrid hydraulic excavator with innovative powertrain. Energy Convers Manag 2021; 244: 114447. Crossref.

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Method of Load Matching Control of Hydraulic Excavator''s Energy Saving

A new control method of hydraulic excavator''s energy saving is put forward in this paper.According to the method,the load of excavator is estimated according to the output pressure of pump.Based on the result of the estimation of load,the speed control lever of diesel governor and the torque absorption of pump are controlled to ensure the diesel''s output power

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Applied Energy

The developed EHESS is composed of energy storage with eight UC modules, an energy management controller, an electric motor controller, a cooling system, and an energy recovery and regeneration unit. In the energy recovery process of energy-saving excavators, the braking time of the boom lowering process is about 1.87 times that of the

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Excavator energy-saving efficiency based on diesel engine

The hydraulic excavator energy-saving research mainly embodies the following three measures: to improve the performance of diesel engine and hydraulic component, to improve the hydraulic system, and to improve the power matching of diesel-hydraulic system-actuator. Although the above measures have certain energy-saving effect, but because the

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Simulated research on large-excavator boom based on

lic excavator, a new hydraulic type is designed for the purpose of energy saving, which contains an accumulator as a reversible energy storage component and avariable pump/motor as an energy conversion element. This scheme belongs to the excavator boom potential energy regeneration method. When the boom is lowered, the accumulator and the

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Investigation and Optimization of Energy Consumption for Hybrid

Hybrid technology has emerged as a promising solution to reduce energy consumption in hydraulic excavators ((HEs)) [7,8].HEs, mainly divided into hydraulic and electric hybrids, have been developed and commercialized, offering potential energy savings [9,10].Researchers have effectively demonstrated the potential of electric energy regeneration

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A comprehensive overview of hybrid construction machinery

Supercapacitors have also been regarded as the appropriate energy storage devices of hybrid powertrain systems, which are designed to bridge the gap between batteries and capacitors to form fast-charging energy storage devices of intermediate specific energy. 57 A supercapacitor can be classified as a double-layer capacitor or pseudo-capacitor

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A review of developments in energy storage systems for hybrid excavators

A novel series hybrid hydraulic excavator based on electro-hydraulic composite energy storage, which provides the average power of the system through the diesel engine, and the battery and accumulator are used as the intermediate energy storage devitalize the output current of the battery, and improve the service life of theattery, is proposed.

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Improvement of Energy Regeneration for Hydraulic Excavator

Environmental issue and energy crises have become serious problems [1,2,3,4,5,6,7].Therefore, research on fuel-efficient construction machines is important especially the hydraulic excavator [8,9,10].Hybrid technology is an effective way to reduce the energy consumption of hydraulic excavators [1, 33,34,35,36,37].Battery, supercapacitor, flywheel, flow

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Improvement of Energy Saving for Hybrid Hydraulic Excavator

To reduce the energy consumption and emission, an innovative powertrain and the energy management strategy are proposed for hydraulic excavator in this paper. The novel powertrain consists of the engine, motor/generator, planetary gear, gearbox, and variable hydraulic pump. The energy regeneration system is also applied on the system to regenerate

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About Excavator energy storage and energy saving

About Excavator energy storage and energy saving

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6 FAQs about [Excavator energy storage and energy saving]

Does hydraulic excavator save energy?

Compared with the current hybrid system and conventional system, the energy saving eficiencies are 4% and 48% respectively with diferent cylinder velocities. The fuel consumption and emission of hydraulic excavator can be reduced efectively with the proposed powertrain and energy management strategy.

What is a hydraulic excavator energy saving system?

In order to address these issues, a hydraulic excavator energy saving system based on a three-chamber accumulator is proposed. Firstly, the conventional piston-type hydraulic accumulator is integrated with the hydraulic cylinder to form a three-chamber accumulator, which has a pressurizing function during energy storage.

How regenerated energy is stored in a hydraulic excavator?

For the HERS, the regenerated energy can be stored in the hydraulic accumulator through hydraulic valves [12, 13]. To reduce the energy consumption of the hydraulic excavator, the stored energy can be reused to drive the actuator independently, or assist the engine to dive the hydraulic system.

How efficient is hydraulic excavator?

Compared with the current hybrid system and conventional system, the energy saving efficiencies are 4% and 48% respectively with different cylinder velocities. The fuel consumption and emission of hydraulic excavator can be reduced effectively with the proposed powertrain and energy management strategy.

How many energy storage devices do excavators need?

The regeneration system always requires at least one energy storage device. However, using a single storage device is difficult to meet the need for energy recuperation as well as performance satisfaction of excavators. Some researches combine two independent energy storage devices to form a combined energy storage system.

What are hydraulic energy recovery methods for excavators?

Currently, the mainstream hydraulic energy recovery methods for excavators mainly include the electric energy regeneration system (EERS) and the hydraulic energy regeneration system (HERS).

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