A Boom Energy Regeneration System of Hybrid Hydraulic Excavator Using Energy Conversion Components

In this paper, a novel design of an energy regeneration system was proposed for recovering as well as reusing potential energy in a boom cylinder. The proposed system included a hydraulic pump/motor and an electrical motor/generator. When the boom moved down, the energy regeneration components conve...

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Bibliographic Details
Published in:Actuators 2021-01, Vol.10 (1), p.1
Main Authors: Do, Tri Cuong, Nguyen, Duc Giap, Dang, Tri Dung, Ahn, Kyoung Kwan
Format: Article
Language:English
Subjects:
boom energy regeneration systems
discrete time-optimal control
energy management strategy
hydraulic excavators
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Summary:In this paper, a novel design of an energy regeneration system was proposed for recovering as well as reusing potential energy in a boom cylinder. The proposed system included a hydraulic pump/motor and an electrical motor/generator. When the boom moved down, the energy regeneration components converted the hydraulic energy to electrical energy and stored in a battery. Then, the regenerated energy was reused at subsequent cycles. In addition, an energy management strategy has been designed based on discrete time-optimal control to guarantee position tracking performance and ensure component safety during the operation. To verify the effectiveness of the proposed system, a co-simulation (using MATLAB and AMESim) was carried out. Through the simulation results, the maximum energy regeneration efficiency could achieve up to 44%. Besides, the velocity and position of the boom cylinder achieved good performance with the proposed control strategy.
ISSN:2076-0825
2076-0825
DOI:10.3390/act10010001