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An Energy-Saving Pressure-Compensated Hydraulic System With Electrical Approach
Abstract
Mobile hydraulic systems are developed toward better control performance and higher energy efficiency. Pressure compensators, which govern the pressure drops over the control orifices, are widely used in multiactuator systems to improve their operability. However, additional energy is also dissipated in the compensators especially under the overrunning load conditions. This paper presents a novel energy-saving system, where the compensator is designed as a regeneration device consisting of a hydraulic motor and an electric generator. Then, hydraulic energy can be regenerated and pressure compensation function is realized by adapting the electromagnetic torque of the generator to the load as well. The close-loop control of the generator is designed by effective pressure drop estimation. The proposed energy-saving system and controller are implemented on an experimental platform of hybrid excavators which is equipped with an electric energy storage device. The experimental results show both good control performance and significant energy-saving effect.
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“The results of the study, summarized in Table 1, show that the energy efficiency of hydraulic fluid power systems is very poor, as demonstrated also by several authors like Wang and Wang (2014).”
From A systematic management and control methodology for high energy saving in applications equipped with hydraulic servo-axes (2024) · cites this paper as Wang and Wang (2014)
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Research works printed but not linked: 25
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Cited by
Sorted by citations
Energy-Saving Design Method for Hydraulic Press Drive System with Multi Motor-Pumps
Huang, H., Zou, X., Li, L., Li, X., & Liu, Z. (2019) · International Journal of Precision Engineering and Manufacturing-Green Technology · doi:10.1007/s40684-019-00085-6 · Cited by 33
Righettini, P., Strada, R., Tiboni, M., Cortinovis, F., & Santinelli, J. (2024) · Control Engineering Practice · doi:10.1016/j.conengprac.2024.105847 · Cited by 15
Metadata
- Authors
- Wang, T., & Wang, Q.
- Affiliations
- Zhejiang University (CN)
- Venue
- IEEE/ASME Transactions on Mechatronics
- Published
- 2014-04
- Volume
- 19
- Issue
- 2
- Pages
- 570-578
- ISSN
- 1083-4435 (ISSN-L)
- 1941-014X
- OpenAlex
- W2099982974
- Cited by
- 95
- References
- 0
- Citations by year
- 2026: 1 · 2025: 1 · 2024: 7 · 2023: 4 · 2022: 5 · 2021: 6 · 2020: 12 · 2019: 10 · 2018: 6 · 2017: 12 · 2016: 13 · 2015: 11 · 2014: 7
- FWCI
- 13.70
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- IEEE/ASME Transactions on Mechatronics (publishedVersion)
- Topics
- Physical Sciences › Engineering › Mechanical Engineering › Hydraulic and Pneumatic Systems
- Physical Sciences › Engineering › Automotive Engineering › Electric and Hybrid Vehicle Technologies
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Electric Power Systems and Control
- Keywords
- pressure compensation, hydraulic systems, energy conservation, hydraulic motors, generators, electromagnetic torque control, pressure drop estimation, feedback control, hybrid excavator, electric energy storage, mobile hydraulic systems
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