Design and analysis of compound potential energy regeneration system for hybrid hydraulic excavator

Wang, Tao; Wang, Qingfeng

doi:10.1177/0959651812456642

Cited by 17 publications

(12 citation statements)

References 15 publications

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“…is obtained via the identification toolbox in MATLAB/ Simulink. According to equation (10), the actual speed can be expressed by v enga = À0:01(70s + 1) (0:1s + 1)(0:61s + 1)…”

Section: Dynamics Of Powertrainmentioning

confidence: 99%

“…For the compound HPEs, the most evident advantage is that the kinetic energy of the upper structure during the deceleration of the swing motor and the potential energy during the boom lowering can be recovered. 2,4,[8][9][10][11][12][13][14][15] Therefore, the compound HPE is the best solution when both the cost and the fuel economy are considered.…”

Section: Introductionmentioning

confidence: 99%

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The control strategy for improving the stability of a powertrain for a compound hybrid power excavator

Yao

Wang

2015

Proceedings of the Institution of Mechanical Engineers, Part D:

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Nowadays, hybrid power excavators are an active research subject in the construction machinery area. The primary focus of this study is to investigate the control strategy for improving the stability of a powertrain for compound hybrid power excavators. First, the power flow and the dynamics of the powertrain of compound hybrid power excavators are analysed. It is concluded that the control strategy for compound hybrid power excavators has to guarantee the charge and discharge priority for operation of the swing and the boom lowering. Otherwise, large-scale switches of the operation point of the engine have to be performed in order to keep the state of charge in the appropriate range, which results in worse stability of the powertrain. Then, an improved rule-based control strategy is presented, which incorporates a load torque distributor, a charge-sustaining strategy and a dynamic torque compensator. The simulation model of a 20 ton compound hybrid power excavator, namely the ZE205E hybrid, is established. The improved rule-based control strategy, the thermostat control strategy and the control strategy presented by Yoo in 2009 are compared with respect to the stability of the powertrain and the fuel consumption through simulations. The simulation results show that the improved rule-based control strategy is best for the stability; however, for the fuel consumption, the improved rulebased control strategy is better than the thermostat control strategy but poorer than the control strategy described by Yoo. Taking into overall consideration the stability of the powertrain and the fuel consumption, the improved rule-based control strategy presented in this paper is more applicable for compound hybrid power excavators.

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“…is obtained via the identification toolbox in MATLAB/ Simulink. According to equation (10), the actual speed can be expressed by v enga = À0:01(70s + 1) (0:1s + 1)(0:61s + 1)…”

Section: Dynamics Of Powertrainmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The control strategy for improving the stability of a powertrain for a compound hybrid power excavator

Yao

Wang

2015

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…Methods for recovering boom energy by adding a cylinder and accumulator to the existing boom hydraulic circuit [12], the hydraulic motor connected to the engine shaft [13], and accumulators and hydraulic motors (added to the hydraulic circuit) [9,14] have been studied. In addition, recovery methods through electrical systems and storage devices have been studied [15].…”

Section: Introductionmentioning

confidence: 99%

Methodology of Excavator System Energy Flow-Down

Kang

et al. 2020

Energies

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Due to the strengthening of air-quality regulations, researchers have been investigating methods to improve excavator energy efficiency. Many researchers primarily conducted simulation studies employing mathematical models to analyze the energy consumption of excavator systems, which is necessary to examine the fuel efficiency improvement margin and the improvement effect. However, to effectively study the improvement of excavator efficiency, the real-time energy consumption characteristics must be examined through simulations and analyses of actual equipment-based energy consumption. Accordingly, this study establishes an energy flow-down model for the entire excavator system based on actual equipment tests. A measurement system is built to measure the required data, thereby establishing an experimental methodology for modeling each component. This paper presents an excavator system energy flow-down methodology that integrates the energy flow-down model, measurement system, and experimental methodology. This methodology was applied to dig and dump operations, and the energy consumption characteristics were analyzed. An analysis of the operating modes indicates that 59.8% of the total fuel energy was consumed in the engine system, 17% in the hydraulic system, and 23.2% in the hydraulic actuation systems. The methodology can be used to help analysis of the fuel efficiency improvement margin under various conditions.

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“…Nevertheless, at the beginning of the movement of the cylinder, the system would oscillate. Wang and colleagues 10–14 came up with a compound electrical PERS to regenerate the potential energy of the hybrid hydraulic excavator (HHE) boom. However, they only considered the dynamic performance and the efficiency of the PERS in the ideal control area and neglected the influence from the DC voltage, the capacity of the inverter and the rotary speed of the permanent-magnet synchronous machine (PMSM).…”

Section: Introductionmentioning

confidence: 99%

A novel hybrid control strategy for potential energy regeneration systems of hybrid hydraulic excavators

Chen

Wang

2016

Proceedings of the Institution of Mechanical Engineers, Part I:

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Excavators as a kind of typical construction machinery are widely used in all kinds of earthworks. Due to the low efficiency of the excavator, many enterprises and researchers have been committed to improving its efficiency. Energy regeneration system is an effective energy-saving technology, which has attracted much attention in recent years. However, the traditional energy regeneration system pays much attention to the energy saving, while the maneuverability is not fully considered. This article focuses on the maneuverability and the energy saving of the hybrid hydraulic excavator boom. A novel hybrid control method to guarantee the dynamic performance of the energy regeneration system, which is based on an electrical potential energy regeneration system, is proposed. A combined use of a torque controller for the permanent-magnet synchronous machine and a position controller for the proportional pressure valve makes the dynamic performance of the potential energy regeneration system insensitive to the influence from the direct current voltage, the capacity of the inverter as well as the cylinder speed, and achieves fast response and maximum energy regeneration simultaneously. To verify the effectiveness of the hybrid control method for the potential energy regeneration system, co-simulations are carried out in AMESim and Simulink. The results show that the dynamic performance of the potential energy regeneration system with the hybrid control method is close to a throttle-governing system and the regenerated potential energy is considerable.

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Design and analysis of compound potential energy regeneration system for hybrid hydraulic excavator

Cited by 17 publications

References 15 publications

The control strategy for improving the stability of a powertrain for a compound hybrid power excavator

The control strategy for improving the stability of a powertrain for a compound hybrid power excavator

Methodology of Excavator System Energy Flow-Down

A novel hybrid control strategy for potential energy regeneration systems of hybrid hydraulic excavators

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