working principle of excavator energy storage device complete design scheme
A Novel Energy Recovery System for Parallel Hybrid Hydraulic Excavator
Abstract. Hydraulic excavator energy saving is important to relieve source shortage and protect environment. This paper mainly discusses the energy saving for the hybrid hydraulic excavator. By analyzing the excess energy of three hydraulic cylinders in the conventional hydraulic excavator, a new boom potential energy …
Study on energy efficiency characteristics of the heavy-duty ...
In [39, 40], an additional hydraulic cylinder connected with the hydraulic accumulator was added to recover and reutilize the gravitational potential energy of the manipulator, which was also called a liquid-gas energy storage balance scheme. Ge [41] studied the manipulator of hydraulic excavators with the above scheme. The test result …
A novel hydraulic excavator boom driving system with high …
This scheme is called decentralized hydraulics. The potential energy of the working device is converted to electric energy and stored in lithium batteries through the above mentioned driving unit. The energy consumption of the boom system can be reduced by up to 56% compared with load-sensing systems [28]. Yoon et al. studied the …
A high-efficient solution for electro-hydraulic actuators with energy ...
Studies on a 20-ton hydraulic excavator show that the energy that can be potentially regenerated during one duty cycle from the boom, arm, bucket, and swing is as high as 260.4 kJ [3]. For a typical excavator truck-loading cycle, research shows that without energy regeneration the overall efficiency of the centralized system is as low as …
Optimal Energy Management of the Electric Excavator Using
Super capacitors are energy storage devices that have the advantages of rapid charging, a high charge, an efficient discharge and a semi-permanent cycle life. In this study, a simulation of the optimal management was performed by applying a super capacitor with these characteristics to the energy regeneration system of an electric excavator.
What is an Accumulator in Excavator? Guide to Excavator …
An accumulator is a device used for storage of energy in an excavator, also known as a digger or earthmover. It acts as a battery, storing energy to be used later in the operation of the machine. This energy is typically hydraulic in nature and is used to power various functions and movements of the excavator.
Study on energy efficiency characteristics of the heavy-duty ...
Zhang [35] reported a distributed pump-controlled small hydraulic excavator scheme, and the simulation results showed the energy efficiency of the whole system can reach the level of 73%. To address the problem of flow rate asymmetry, Quan [[36], [37], [38]] developed an asymmetric hydraulic pump driven excavator.
Energy storage
Energy storage is the capture of energy produced at one time for use at a later time [1] to reduce imbalances between energy demand and energy production. A device that stores energy is generally called an accumulator or battery. Energy comes in multiple forms including radiation, chemical, gravitational potential, electrical potential ...
A Novel Energy Recovery System Integrating Flywheel and Flow
Implementing an energy recovery system (ERS) is an effective solution to improve energy efficiency for hydraulic excavators (HEs). A flywheel energy recovery system (FERS) is proposed based on this concept. A hydraulic pump motor (PM) is employed as the energy conversion component and a flywheel is used as the energy …
Energy and Operation Characteristics of Electric Excavator …
loss of the hydraulic system and recover device potential energy, obtaining high energy efficiency. Monica research group proposed an excavator scheme where four variable displacement pumps were used to drive the hydraulic cylinders and motor of the hydraulic excavators. With the closed pump control and energy recovery principle, the
Potential energy regeneration method and its ...
Taking the actual working environment and excavator state into account, the system design principles for the proposed solution are as follows: (1) the potential energy of the working device should be recovered as far as possible based on ensuring the safety and space allowability of the system; (2) when the energy-saving system …
The applications of energy regeneration and conversion technologies ...
With this scheme, the conversion efficiency of the boom potential energy to the energy storage device can reach 82.7%, and the energy consumption of the rising and falling cycles can be reduced by 75% compared with those of the IMC system. Download : Download high-res image (182KB) Download : Download full-size image; Fig. 6.
Potential energy regeneration method and its ...
Using this scheme, the gravitational potential energy of the working device can be stored and reused directly, without increasing the cost and install power of the machine largely. In the study, first, the system parameters are designed, following which the multidisciplinary dynamic model of the hydraulic excavator is established.
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