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Tianliang Lin et al. investigated two kinds of energy regeneration systems that can recycle the potential energy of the hybrid hydraulic excavator by conducting co-simulation …
This paper describes an optimal energy management approach for a fuel cell hybrid excavator (FCHE) powered by a fuel cell (FC) system and energy storage devices composed of a Li-ion …
Power train of electric excavator including regeneration system It is basically assumed that the fuel cell, which is the main power sources of the electric excavator, the battery, and the super capacitor of the energy regeneration system, can cover the power of the existing engine excavator.
excavators using electric energy storage to recover energy [16–18]: high energy density but low power density; low power density; large weight and volume; and the inability to ... and the …
To verify the effectiveness of this system, a real test bench based on a 6-ton hydraulic excavator was performed. The experimental results showed that 50.1% energy consumption of the boom and 64.9% peak power of the power source can be reduced in the proposed system compared with the double-chamber system.
the energy converter and the fl ywheel is the energy storage device. The swashplate of the PM can swing to a negative angle or a positive angle, so the PM can reverse its fl ow direction without ...
One energy storage technology now arousing great interest is the flywheel energy storage systems (FESS), since this technology can offer many advantages as an energy …
In particular, when applied to the boom excavator, the IMV system can save up to 44% of energy ... between the fuel cell system and auxiliary energy storage devices is a …
The fuel cell is the main power supply for most of the excavator workload while the battery/supercapacitor is the energy storage device, which supplies additional required …
Energy regeneration systems (ERSs) that use the same energy storage device as hybrid power systems can improve the fuel economies of hybrid hydraulic excavators (HHEs).
hydraulic or electric energy storage devices such as hydraulic accumulators, electric batteries or supercapacitors. Some major excavator companies have already implemented these solutions …
In this paper, a novel series hybrid hydraulic excavator based on electro-hydraulic composite energy storage, which provides the average power of the system through the diesel …
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.
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 …
Regarding these energy storage devices involved in different ERSs, there are several differences in terms of the pertinent technical parameters including specific energy and …
Some of the options for energy storage in energy regeneration Energies 2020, 13 devices include flywheels, compressed air, electrical energy storage systems (EESS), and …
This paper analyzes the excavator system''s energy flow under the typical working condition load. ... In addition, recovery methods through electrical systems and storage …
Finally, the challenges in the energy storage system of hybrid excavators are discussed. Introduction. ... The assembled ASC device achieved the potential window of 1.8 V …
This paper analyzes the excavator system''s energy flow under the typical working condition load. In operation conditions, the output energy of the engine only accounts …
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