Improving energy efficiency in mobile hydraulics is paramount and feasible via machine electrification, but all actuators' power in standard systems must flow through the electric motors, which is unfeasible for medium-to-high power applications. Therefore, this paper leverages the idea of splitting the transferred power between the hydraulic and electric domains to save energy while downsizing the electric motors. A novel layout of a hybrid excavator is presented, validated using high-fidelity simulations, and compared to the state-of-the-art, load-sensing machine. The results show the expected system's functioning and efficiency benefits (fuel savings close to 28% compared to the original excavator). Almost 60% of the energy is transferred to the actuators hydraulically minimizing the power rating of the electric machines in favor of the system's cost and compactness. Future research will focus on controlling the hybrid system to maximize energy savings and make it easily applicable to different fluid power machines.

Combined speed control and centralized power supply for hybrid energy-efficient mobile hydraulics / Fresia, P.; Rundo, M.; Padovani, D.; Altare, G.. - In: AUTOMATION IN CONSTRUCTION. - ISSN 0926-5805. - ELETTRONICO. - 140:(2022), p. 104337. [10.1016/j.autcon.2022.104337]

Combined speed control and centralized power supply for hybrid energy-efficient mobile hydraulics

Fresia P.;Rundo M.;Padovani D.;Altare G.
2022

Abstract

Improving energy efficiency in mobile hydraulics is paramount and feasible via machine electrification, but all actuators' power in standard systems must flow through the electric motors, which is unfeasible for medium-to-high power applications. Therefore, this paper leverages the idea of splitting the transferred power between the hydraulic and electric domains to save energy while downsizing the electric motors. A novel layout of a hybrid excavator is presented, validated using high-fidelity simulations, and compared to the state-of-the-art, load-sensing machine. The results show the expected system's functioning and efficiency benefits (fuel savings close to 28% compared to the original excavator). Almost 60% of the energy is transferred to the actuators hydraulically minimizing the power rating of the electric machines in favor of the system's cost and compactness. Future research will focus on controlling the hybrid system to maximize energy savings and make it easily applicable to different fluid power machines.
File in questo prodotto:
File Dimensione Formato  
1-s2.0-S0926580522002102-main.pdf

non disponibili

Descrizione: Articolo principale
Tipologia: 2a Post-print versione editoriale / Version of Record
Licenza: Non Pubblico - Accesso privato/ristretto
Dimensione 5.85 MB
Formato Adobe PDF
5.85 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
AUTCON-D-22-00255_R2.pdf

Open Access dal 13/05/2024

Descrizione: Documento principale
Tipologia: 2. Post-print / Author's Accepted Manuscript
Licenza: Creative commons
Dimensione 2.78 MB
Formato Adobe PDF
2.78 MB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2964383