An Investigation of Energy Consumption Characteristics of the Pump-Control System for Electric Excavator Arms
The conventional hydraulic system of excavators suffers from significant valve throttling losses and inadequate matching between the hydraulic power source and the load, which substantially impact the system’s overall energy consumption and severely impede the trend toward electrification and energy...
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MDPI AG
2024-11-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/14/23/10791 |
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| author | Aihuan He Liejiang Wei Quanfeng Lu Pengfei He |
| author_facet | Aihuan He Liejiang Wei Quanfeng Lu Pengfei He |
| author_sort | Aihuan He |
| collection | DOAJ |
| description | The conventional hydraulic system of excavators suffers from significant valve throttling losses and inadequate matching between the hydraulic power source and the load, which substantially impact the system’s overall energy consumption and severely impede the trend toward electrification and energy efficiency in construction machinery. To address this issue, a pump-controlled hydraulic cylinder system has been implemented to replace the original valve-controlled hydraulic system that utilizes a single pump with multiple actuators. The influence of energy conversion efficiency and the speed between the motor and the hydraulic pump under varying load-power conditions has been determined through experimental investigations. Based on these findings, a compound-control strategy is proposed that adjusts the displacement of the hydraulic pump to achieve precise control over the position of the hydraulic cylinder and facilitates both the speed and displacement coordination while ensuring optimal motor speed matching with the load power. This strategy is implemented in the boom pump’s hydraulic cylinder control system. The research findings indicate that this combined-control approach enhances efficiency by approximately 18.9% compared with traditional variable-speed pump-controlled hydraulic cylinder systems. Furthermore, energy consumption is reduced by about 39% compared with the conventional valve-controlled hydraulic system. |
| format | Article |
| id | doaj-art-63b90ee2e5bf4ac18db8539bfc60709e |
| institution | OA Journals |
| issn | 2076-3417 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj-art-63b90ee2e5bf4ac18db8539bfc60709e2025-08-20T01:55:26ZengMDPI AGApplied Sciences2076-34172024-11-0114231079110.3390/app142310791An Investigation of Energy Consumption Characteristics of the Pump-Control System for Electric Excavator ArmsAihuan He0Liejiang Wei1Quanfeng Lu2Pengfei He3School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaSchool of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaSchool of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaSchool of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaThe conventional hydraulic system of excavators suffers from significant valve throttling losses and inadequate matching between the hydraulic power source and the load, which substantially impact the system’s overall energy consumption and severely impede the trend toward electrification and energy efficiency in construction machinery. To address this issue, a pump-controlled hydraulic cylinder system has been implemented to replace the original valve-controlled hydraulic system that utilizes a single pump with multiple actuators. The influence of energy conversion efficiency and the speed between the motor and the hydraulic pump under varying load-power conditions has been determined through experimental investigations. Based on these findings, a compound-control strategy is proposed that adjusts the displacement of the hydraulic pump to achieve precise control over the position of the hydraulic cylinder and facilitates both the speed and displacement coordination while ensuring optimal motor speed matching with the load power. This strategy is implemented in the boom pump’s hydraulic cylinder control system. The research findings indicate that this combined-control approach enhances efficiency by approximately 18.9% compared with traditional variable-speed pump-controlled hydraulic cylinder systems. Furthermore, energy consumption is reduced by about 39% compared with the conventional valve-controlled hydraulic system.https://www.mdpi.com/2076-3417/14/23/10791pump-controlled hydraulic cylinderspeed–displacement control strategypower matchingefficiency |
| spellingShingle | Aihuan He Liejiang Wei Quanfeng Lu Pengfei He An Investigation of Energy Consumption Characteristics of the Pump-Control System for Electric Excavator Arms Applied Sciences pump-controlled hydraulic cylinder speed–displacement control strategy power matching efficiency |
| title | An Investigation of Energy Consumption Characteristics of the Pump-Control System for Electric Excavator Arms |
| title_full | An Investigation of Energy Consumption Characteristics of the Pump-Control System for Electric Excavator Arms |
| title_fullStr | An Investigation of Energy Consumption Characteristics of the Pump-Control System for Electric Excavator Arms |
| title_full_unstemmed | An Investigation of Energy Consumption Characteristics of the Pump-Control System for Electric Excavator Arms |
| title_short | An Investigation of Energy Consumption Characteristics of the Pump-Control System for Electric Excavator Arms |
| title_sort | investigation of energy consumption characteristics of the pump control system for electric excavator arms |
| topic | pump-controlled hydraulic cylinder speed–displacement control strategy power matching efficiency |
| url | https://www.mdpi.com/2076-3417/14/23/10791 |
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