Development of hybrid powered hydraulic construction machinery

Lin, Tianliang; Wang, Qingfeng; Hu, Baozan; Wen, Guangrui

doi:10.1016/j.autcon.2009.09.005

Cited by 169 publications

(81 citation statements)

References 6 publications

(7 reference statements)

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Section: Introductionmentioning

confidence: 99%

“…Due to global warming, countries have enforced new requirements for energy-saving and emissionreduction in large construction machinery [1]. In the operation of construction machinery, it is possible to reuse and recycle energy because of the cyclic change of workload [2].The energy recovery system can be divided into hydraulic and electrical parts. Minav et al proposed using a forklift as an experimental platform for comparing hydraulic with electrical recovery schemes in terms of fuel consumption and service performance [3] and [4].…”

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confidence: 99%

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Investigation of the Energy Regeneration and Control Strategy of a Crane Hoisting System

2018

SV-JME

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In recent years, fuel costs have risen dramatically due to the acceleration of energy consumption. Due to global warming, countries have enforced new requirements for energy-saving and emissionreduction in large construction machinery [1]. In the operation of construction machinery, it is possible to reuse and recycle energy because of the cyclic change of workload [2].The energy recovery system can be divided into hydraulic and electrical parts. Minav et al. proposed using a forklift as an experimental platform for comparing hydraulic with electrical recovery schemes in terms of fuel consumption and service performance [3] and [4]. It can be seen from the results that the hydraulic type is the better choice rather than the electric one in terms of fuel-saving rate. However, the hydraulic effects are rather limited in the load range, for which the overall energy-saving effects of electrical types can be better. Lin et al. employed hydraulic and electrical methods to recover the excavator boom potential energy [5]. The results have demonstrated that the hydraulic speed is the better choice compared to the electric one in controlling the speed of moving arms. Gong et al. showed that the potential energy of forklift is stored in the supercapacitor by the motor, where the experimental evaluation is also carried out. Specifically, comprehensive energy-saving effects of 20.8 % can be reached [6] and [7]. Yu and Kwan conducted simulations to analyse the boom potential of the excavator by hydraulic transmissions. Compared to the traditional accumulator recovery, it has not yet been experimentally verified [8]. Lin et al. considered the dynamic stability of hydraulic recycling and the economic nature of the electrical system [9]. Combining the advantages of hydraulic and electric recovery, the utility model can be applied to the recovery of the potential energy of the movable arm of the excavator. These results have demonstrated that the new system can increase the fuel-saving rate and reduce the installed capacity of the generator by 65 % compared to the traditional hydraulic recycling method.From the system structure perspective, the system can be categorized into series, parallel, and hybrid systems. Kwon et al. have investigated the series, parallel, and hybrid connection systems of excavator • According to the potential energy recovery rate, determine the energy recovery system operating conditions. Investigation of the Energy Regeneration and Control Strategy of a Crane Hoisting System• Describes the control strategy of the entire energy recovery system.

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Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

Investigation of the Energy Regeneration and Control Strategy of a Crane Hoisting System

2018

SV-JME

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“…In order to be competitive on the market, a working machine producer should have energy efficient -hybrid or fully electric -products available for customers [3] and [4]. Electrification is one of the ways of creating more energy efficient NRMM [5]. The possibilities of utilizing electrical components in NRMM have generated wide interest in this research area [6] and [7].…”

Section: Introductionmentioning

confidence: 99%

Integrated Electro-Hydraulic Machine with Self-Cooling Possibilities for Non-Road Mobile Machinery

Ponomarev¹,

Minav²,

Åman³

et al. 2015

SV-JME

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Over the past few years, due to the introduction of Tier 4 emission legislations, new developments for non-road mobile machinery (NRMM• Two cooling schematics are proposed for an integrated electro-hydraulic energy converter.• Integrated electro-hydraulic energy converter can be utilized with a passive cooling scheme.• The proposed self-cooling concept allows a decrease in the power consumption in NRMM applications.

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“…These includes, for example flow demand-based eLS control systems [1], multiple constant pressure rail systems [2,3], displacement control systems [4,5] and different kinds of hydraulic hybrid systems [6,7].…”

Section: Introductionmentioning

confidence: 99%

Simulation study of a digital hydraulic independent metering valve system on an excavator

Ketonen¹,

Linjama²

2017

Linköping Electronic Conference Proceedings

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Independent metering valve (IMV) control of working hydraulic systems in mobile machines has been studied for more than two decades and during the past few years it has also been adopted to commercial excavators. The main advantages of the IMV systems, compared to load sensing and open centre systems are the possibility of optimizing the pressure losses of the metering edges and the possibility of re-routing the hydraulic energy between actuators. Energy re-routing can be realized without storing the energy to accumulators and thus avoiding the losses of additional routing valves and energy conversions. IMV combined with a hybrid system allows even more improved energy efficiency. Digital hydraulic IMV (D-IMV) allows additional benefits to the IMV systems with more fault-tolerant operation with robust components, faster and more precise control and leak-free valves.The purpose of this study is to apply a D-IMV system to a midsize (20t) excavator and to study the differences in energy consumption of the working hydraulic system with four actuators. This paper presents the controller designed for the D-IMV and a simulation model for analysing the system. The energy consumption of the D-IMV is compared to the measured energy consumption of a state-of-the-art excavator with a load-sensing hydraulic system.The Controller of the D-IMV system is realized with a sub-optimal mode control, so that instead of calculating and optimizing the total energy consumption of all possible mode combinations, simpler control logic is defined to remove the complex structure of the controller and ease the computational burden. Simulation study shows that the hydraulic input energy can be reduced 28-42% compared to a standard LS-controlled excavator. Detailed analysis of where the reduction emerges is presented.

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Development of hybrid powered hydraulic construction machinery

Cited by 169 publications

References 6 publications

Investigation of the Energy Regeneration and Control Strategy of a Crane Hoisting System

Investigation of the Energy Regeneration and Control Strategy of a Crane Hoisting System

Integrated Electro-Hydraulic Machine with Self-Cooling Possibilities for Non-Road Mobile Machinery

Simulation study of a digital hydraulic independent metering valve system on an excavator

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