Modelling, Testing and Analysis of a Regenerative Hydraulic Shock Absorber System

Wang, Ruichen; Gu, Fengshou; Cattley, Robert; Ball, Andrew

doi:10.3390/en9050386

Cited by 40 publications

(25 citation statements)

References 23 publications

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“…Zhang [36] designed a hydraulic energy recovery shock absorber and analyzed its suspension performance. Wang [37] determined that under the sinusoidal excitation of 1 Hz and 25 mm, the recoverable power is 26 W, and the efficiency is 40%. Under the vibration input with 7.5 mm and 2.5 Hz, the average power of 4.3 W can be obtained through a shock absorber [38].…”

Section: Research Status Of the Energy-regenerative Suspension Systemmentioning

confidence: 99%

Research Review of a Vehicle Energy-Regenerative Suspension System

Zhao

et al. 2020

Energies

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Vehicles are developing in the direction of energy-saving and electrification. suspension has been widely developed in the field of vehicles as a key component. Traditional hydraulic energy-supply suspensions dissipate vibration energy as waste heat to suppress vibration. This part of the energy is mainly generated by the vehicle engine. In order to effectively utilize the energy of this part, the energy-regenerative suspension with energy recovery converts the vibrational energy into electrical energy as the vehicle’s energy supply equipment. This article reviews the hydraulically powered suspension of vehicles with energy recovery. The importance of such suspension in vehicle energy recovery is analyzed. The main categories of energy-regenerative suspension are illustrated from different energy recovery methods, and the research status of hydraulic energy-regenerative suspension is comprehensively analyzed. Important factors that affect the shock-absorbing and regenerative characteristics of the suspension system are studied. In addition, some unresolved challenges are also proposed, which provides a reference value for the development of energy-regenerative suspension systems for hybrid new energy vehicles

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Section: Research Status Of the Energy-regenerative Suspension Systemmentioning

confidence: 99%

Research Review of a Vehicle Energy-Regenerative Suspension System

Zhao

et al. 2020

Energies

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“…In our earlier studies, the concept of integrated hydrostatic-driven electric generator has been proposed for renewable energy harvesting and investigation of electromagnetic properties have been presented It can be noticed that in all of the aforementioned applications the hydrostatic-driven electric generator is a key energy conversion component. Additionally, this machine can also be equipped in the hydrostatic circuits of lifting booms or dampers so as to regenerate inertia or vibration energy [24][25][26][27]. However, conventional hydrostatic-driven electric generators are mostly composed of independent hydrostatic motors and coaxially coupled generators.…”

Section: Introductionmentioning

confidence: 99%

Research on an Integrated Hydrostatic-Driven Electric Generator with Controllable Load for Renewable Energy Applications

Wang

2017

Energies

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Abstract:A hydrostatic transmission is a promising technology in renewable energy harvesting, such as wind energy and wave energy, where the hydrostatic-driven electric generator is a key energy conversion component. By using analytical and experimental methods, this paper investigates the performance of a novel hydrostatic-driven electric generator which integrates the functions of an axial piston hydrostatic motor and a permanent magnet electric generator together. The experimental platform consists of a prototype, an adjustable hydrostatic power source, a controllable electrical load, and various sensors. Energy conversions between hydrostatic and electrical forms are evaluated under different operating velocities and control signals. Power loss distributions are presented by combining measured data and analytical calculation. Thermal experiments are implemented under both of natural and oil-forced cooling conditions and it is found that the temperature rise is much lower when the machine is cooled by hydraulic oil. The experiments validate the energy conversion efficiency, steady controllability, and cooling capability of the integrated hydrostatic-driven electric generator. The results can provide references for further efficiency optimization, dynamic control, as well as practical application.

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“…The pressure drop in motor decreases too. So the damping force decreases according to (12). The motor with high speed can drive the generator to revolve faster and acquires more power.…”

Section: Hydraulic Motormentioning

confidence: 99%

“…According to (12), the pressure drop of the hydraulic motor decreases with the external load increases. So in Figure 9(a), the damping force of extension decreases with the increase of external load; and in Figure 9(b), the peak regenerative power in the extension stroke decreases with the increase of external load.…”

Section: The External Loadmentioning

confidence: 99%

“…And a power up to 738 W could be realized for a practical design of the harvester with a width and height of the piezoelectric bar of 0.015 m and 0.1 m, respectively. Wang et al [12] designed a regenerative hydraulic shock absorber system which converted oscillatory motion of a vehicle suspension into unidirectional rotary motion of a generator. The power of 260 W and the efficiency of 40% were achieved by a shock absorber with piston rod dimensions of 50/30 mm under sinusoidal excitation of 1 Hz frequency and 25 mm amplitude when the accumulator capacity is set to 0.32 L with the load resistance 20 Ω.…”

Section: Introductionmentioning

confidence: 99%

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Design, Modeling, and Analysis of a Novel Hydraulic Energy-Regenerative Shock Absorber for Vehicle Suspension

Zou

Guo

et al. 2017

Shock and Vibration

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To reduce energy consumption or improve energy efficiency, the regenerative devices recently have drawn the public's eyes. In this paper, a novel hydraulic energy-regenerative shock absorber (HERSA) is developed for vehicle suspension to regenerate the vibration energy which is dissipated by conventional viscous dampers into heat waste. At first, the schematic of HERSA is presented and a mathematic model is developed to describe the characteristic of HERSA. Then the parametric sensitivity analysis of the vibration energy is expounded, and the ranking of their influences is 1 ≫ 2 > 1 > 2 ≈ . Besides, a parametric study of HERSA is adopted to research the influences of the key parameters on the characteristic of HERSA. Moreover, an optimization of HERSA is carried out to regenerate more power as far as possible without devitalizing the damping characteristic. To make the optimization results more close to the actual condition, the displacement data of the shock absorber in the road test is selected as the excitation in the optimization. The results show that the RMS of regenerated energy is up to 107.94 W under the actual excitation. Moreover it indicates that the HERSA can improve its performance through the damping control.

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Modelling, Testing and Analysis of a Regenerative Hydraulic Shock Absorber System

Cited by 40 publications

References 23 publications

Research Review of a Vehicle Energy-Regenerative Suspension System

Research Review of a Vehicle Energy-Regenerative Suspension System

Research on an Integrated Hydrostatic-Driven Electric Generator with Controllable Load for Renewable Energy Applications

Design, Modeling, and Analysis of a Novel Hydraulic Energy-Regenerative Shock Absorber for Vehicle Suspension

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