scholarly journals Parameter Matching of Energy Regeneration System for Parallel Hydraulic Hybrid Loader

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 5014
Author(s):  
Jixiang Yang ◽  
Yongming Bian ◽  
Meng Yang ◽  
Jie Shao ◽  
Ao Liang
Keyword(s):  
Duty Cycle ◽  
Energy Recovery ◽  
Control Variable ◽  
High Energy ◽  
Design Parameters ◽  
Fuel Saving ◽  
Regeneration System ◽  
Energy Regeneration ◽  
Hybrid Technology ◽  
Hydraulic Hybrid

Oil shortages and environmental pollution are attracting worldwide attention incrementally. Hybrid falls within one of the effective techniques for those two problems. Taking the loader with high energy consumption and high emission as the target, combined with the hydraulic hybrid technology with high power density and strong energy storage capacity, the parallel hydraulic hybrid loader (PHHL) based on brake energy regeneration is proposed. Firstly, the dynamic models of the key components of the PHHL are established, and the parameters of the part which coincides with the ordinary loader are corrected based on the V-type duty cycle. Then, consid-ering the energy recovery efficiency as well as the characteristics of the loader from the V-type duty cycle, the parameters for several major parts of the energy regeneration system (ERS) were calculated and matched. Then, based on the initial matching, the improved adaptive genetic al-gorithm (AGA) is employed to optimize the control variable of the control strategy and the design parameters of ERS to enhance the economic benefit and performance of the ERS. Furthermore, a simulation validation was conducted. Simulation results show that the ERS with optimized pa-rameters could improve the fuel-saving effect by 25% compared to the ERS with initial parameters, which indicated the rationality of the optimized parameters. Finally, the fuel consumption test of the PHHL prototype under the V-type duty cycle is performed. The results show that the PHHL with the optimization scheme can achieve 9.12% fuel saving, which is on the brink of the potential of brake energy recovery and verifies the feasibility of applying hydraulic hybrid technology on the loader.

Research on the Energy Recovery of the Excavator Slewing System Based on Hybrid Technology

2014 ◽  
Vol 986-987 ◽  
pp. 952-955 ◽  
Author(s):  
Dong Yun Wang ◽  
Yu Zhang
Keyword(s):  
Electric Motor ◽  
Energy Recovery ◽  
High Energy ◽  
Hydraulic Excavator ◽  
Recovery Efficiency ◽  
Hydraulic Motor ◽  
Recovery Method ◽  
Hybrid Technology ◽  
New Energy ◽  
Super Capacitors

In the traditional excavator, the slewing braking energy cannot be recovered and eventually became heat. As the hybrid technology was introduced into the hydraulic excavator, it makes energy recovery possible. In this article, a new energy recovery method based on hybrid, using an electric motor instead of a hydraulic motor to drive the swing mechanism. When braking, the electric motor will enter the generator mode and the energy will be recovered and stored in super-capacitors. This method has been proved to have high energy recovery efficiency.

scholarly journals A high-luminosity superconducting twin e+e- linear collider with energy recovery

2021 ◽  
Vol 16 (12) ◽  
pp. P12025
Author(s):  
V.I. Telnov
Keyword(s):  
Duty Cycle ◽  
Energy Recovery ◽  
Linear Collider ◽  
High Energy ◽  
High Luminosity ◽  
Sufficient Power

Abstract Superconducting technology makes it possible to build a high energy e+e- linear collider with energy recovery (ERLC) and reusable beams. To avoid parasitic collisions inside the linacs, a twin (dual) LC is proposed. In this article, I consider the principle scheme of the collider and estimate the achievable luminosity, which is limited by collision effects and available power. Such a collider can operate in a duty cycle (DC) and in a continuous (CW) modes, if sufficient power. With current SC Nb technology (T = 1.8 K, f RF = 1.3 GHz, used for ILC) and with power P = 100 MW, a luminosity L ∼ 0.33 × 1036 cm-2 s-1 is possible at the Higgs factory with 2E 0 = 250 GeV. Using superconductors operating at 4.5 K with high Q 0 values, such as Nb3Sn, and f RF = 0.65 GHz, the luminosity can reach L ∼ 1.4 × 1036 cm-2 s-1 at 2EE0 = 250 GeV (with P = 100 MW) and L ∼ 0.8 × 1036 cm-2 s-1 at 2E 0 = 500 GeV (with P = 150 MW), which is almost two orders of magnitude greater than at the ILC, where the beams are used only once. This technology requires additional efforts to obtain the required parameters and reliably operation. Such a collider would be the best machine for precision Higgs studies, including the measurement of Higgs self-coupling.

scholarly journals Improving Energy Recovery Rate of the Regenerative Braking System by Optimization of Influencing Factors

2019 ◽  
Vol 9 (18) ◽  
pp. 3807
Author(s):  
Lei Xu ◽  
Xiaohui He ◽  
Xinmin Shen
Keyword(s):  
Influencing Factors ◽  
Recovery Rate ◽  
Energy Recovery ◽  
Hybrid Vehicle ◽  
High Energy ◽  
Regenerative Braking ◽  
Braking System ◽  
Hydraulic Hybrid ◽  
Hydraulic Hybrid Vehicle ◽  
Simulation Results

The braking energy can be recovered and recycled by the regenerative braking system, which is significant to improve economics and environmental effect of the hydraulic hybrid vehicle. Influencing factors for the energy recovery rate of regenerative braking system in hydraulic hybrid vehicle were investigated in this study. Based on the theoretical analysis of accumulator and energy recovery rate, modeling of the regenerative braking system and its energy management strategy was conducted in the simulation platform of LMS Imagine Lab AMESim. The simulation results indicated that the influencing factors included braking intensity, initial pressure of the accumulator, and initial braking speed, and the optimal energy recovery rate of 87.61% was achieved when the parameters were 0.4, 19 MPa, and 300 rpm, respectively. Experimental bench was constructed and a series of experiments on energy recovery rate with different parameters were conducted, which aimed to validate the simulation results. It could be found, that with the optimal parameters obtained in the simulation process, the actual energy recovery rate achieved in the experiment was 83.33%, which was almost consistent with the simulation result. The obtained high energy recovery rate would promote the application of regenerative braking system in the hydraulic hybrid vehicle.

Study on Vehicle Velocity Controller for the Energy Regeneration System of the Hydraulic Hybrid Vehicle

2014 ◽  
Vol 1051 ◽  
pp. 850-856
Author(s):  
Yun Pu Song ◽  
Wu Teng Wang
Keyword(s):  
Pid Controller ◽  
Hydraulic Cylinder ◽  
Regeneration System ◽  
Energy Regeneration ◽  
Hydraulic Hybrid ◽  
Vehicle Velocity ◽  
Hybrid Bus ◽  
Hydraulic Hybrid Vehicle ◽  
The Mathematical Model ◽  
Secondary Element

This paper simplifies the energy regeneration-based vehicle velocity system of the hydraulic hybrid bus into a process in which the extension rod of the hydraulic cylinder drives the secondary-element variable delivery pump/motor to change its displacement. This process enables braking of the vehicle and also allows recovery of energy. Based on the mathematical model established for the system, the fuzzy self-adaptive PID controller is designed and the compared with the conventional PID controller with respect to their impact on system performance.

scholarly journals Mechanical transmission system of loader based on hydraulic hybrid technology

2021 ◽  
Vol 25 (6 Part A) ◽  
pp. 4233-4240
Author(s):  
Haifei Wang ◽  
Shimin Yang ◽  
Tan Lu
Keyword(s):  
Power Transmission ◽  
Control Method ◽  
Mechanical Energy ◽  
High Energy ◽  
Transmission System ◽  
Drive System ◽  
Mechanical Transmission ◽  
Fuzzy Pid Control ◽  
Hybrid Technology ◽  
Hydraulic Hybrid

In order to solve the problems of high energy consumption, high noise and pollution gas emission existing in the mechanical transmission system of loader, a research on the mechanical transmission system of loader based on hydraulic hybrid technology is proposed. The mechanical energy and heat energy are generated by the mechanical operation of the loader, which are converted into hydraulic energy and output to the drive system. According to the fast response characteristics and high power density characteristics of the hydraulic power system relative to the thermal engine, the dynamic model of the hydraulic hybrid drive system of the loader is established. The double fuzzy PID control method is used to identify and modify the unknown load and power parameters of the drive system. Through the experiment, it is concluded that the power parameter matching of the transmission system using the hydraulic hybrid technology is more optimized, the application effect is good, and the efficiency of the power transmission system can be maximized.

Characteristics of the energy regeneration and reutilization system during the acceleration stage of the swing process of a hydraulic excavator

2016 ◽  
Vol 231 (6) ◽  
pp. 842-856 ◽  
Author(s):  
Haoling Ren ◽  
Tianliang Lin ◽  
Weiping Huang ◽  
Shengjie Fu ◽  
Qihuai Chen
Keyword(s):  
Control System ◽  
Energy Loss ◽  
Energy Recovery ◽  
Hydraulic Excavator ◽  
Acceleration Process ◽  
Regeneration System ◽  
Energy Regeneration ◽  
Driving System ◽  
Working Cycle ◽  
Hydraulic Accumulator

Although the traditional energy regeneration system which uses electric or hydraulic energy recovery to regenerate part of the overflow energy loss during the acceleration and braking stages of the swing process of a hydraulic excavator, the modification cost is high and the control system is complex. To reduce the overflow energy loss of the swing process of the hydraulic excavator and to simplify the control system, a novel swing driving system based on a hydraulic accumulator to regenerate and utilize the energy automatically during the acceleration process is presented. The working mode and the assessment criteria of the swing system are analysed. The characteristics of the traditional swing system and the proposed swing system are compared. The relationships between the pressures of the two motor chambers, the pressures of the hydraulic accumulator and the motor speed of the proposed swing system in one working cycle are studied. The experimental results showed that the energy recovery efficiency of the proposed swing driving system, which can regenerate the energy automatically based on the hydraulic accumulator, was up to 80% during the acceleration stage of the swing process, and the energy consumption of the power system in one working cycle was reduced by 16.5% in comparaison with that of the traditional driving system.

scholarly journals A Boom Energy Regeneration System of Hybrid Hydraulic Excavator Using Energy Conversion Components

Actuators ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 1
Author(s):  
Tri Cuong Do ◽  
Duc Giap Nguyen ◽  
Tri Dung Dang ◽  
Kyoung Kwan Ahn
Keyword(s):  
Management Strategy ◽  
Electrical Energy ◽  
Maximum Energy ◽  
Regeneration System ◽  
Hydraulic Pump ◽  
Energy Management Strategy ◽  
Energy Regeneration ◽  
System A ◽  
Time Optimal ◽  
Novel Design

In this paper, a novel design of an energy regeneration system was proposed for recovering as well as reusing potential energy in a boom cylinder. The proposed system included a hydraulic pump/motor and an electrical motor/generator. When the boom moved down, the energy regeneration components converted the hydraulic energy to electrical energy and stored in a battery. Then, the regenerated energy was reused at subsequent cycles. In addition, an energy management strategy has been designed based on discrete time-optimal control to guarantee position tracking performance and ensure component safety during the operation. To verify the effectiveness of the proposed system, a co-simulation (using MATLAB and AMESim) was carried out. Through the simulation results, the maximum energy regeneration efficiency could achieve up to 44%. Besides, the velocity and position of the boom cylinder achieved good performance with the proposed control strategy.

Research on Parameters Matching of Ultralight Electric Aircraft Propulsion System

2013 ◽  
Vol 732-733 ◽  
pp. 1212-1215
Author(s):  
Gui Wen Kang ◽  
Yu Hu ◽  
Ya Dong Li ◽  
Wen Hui Jiang
Keyword(s):  
Electric Propulsion ◽  
High Energy ◽  
Low Noise ◽  
Electric Power System ◽  
Propulsion System ◽  
Heat Radiation ◽  
Design Parameters ◽  
Electric Propulsion System ◽  
Electric Aircraft ◽  
Parameter Matching

The propulsion system of ultralight electric aircraft is one of the general aviation technology development directions. It has the advantages such as light pollution, low noise, high energy utilization ratio, simple structure, easy maintenance, high reliability, less heat radiation, little operation cost and so on. Combined with the certain type of ultralight aircraft design parameters, the layout of aircraft electric propulsion, the principles and steps of the parameter matching of electric propulsion system were presented. The method of parameter matching and performance verification of electric propulsion system was put forward. The feasibility of the system is verified from the point of dynamic property. The study of parameter matching of electric propulsion system could not only provide basis for the integrated optimization for electric power system, but also evaluate the performance of the system simulation as reference.

A capacitive deionization system with high energy recovery and effective re-use

Energy ◽  
2016 ◽  
Vol 103 ◽  
pp. 605-617 ◽  
Author(s):  
Ginno L. Andres ◽  
Yoshinobu Yoshihara
Keyword(s):  
Energy Recovery ◽  
High Energy ◽  
Capacitive Deionization
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