Efficiency of direct driven hydraulic drive for non-road mobile working machines

Author

Minav, T.A. ; Bonato, Cesar ; Sainio, P. ; Pietola, M.

Author_Institution

Aalto Univ., Espoo, Finland

fYear

2014

fDate

2-5 Sept. 2014

Firstpage

2431

Lastpage

2435

Abstract

As answer for tendencies for compact and powerful solution for electro-hydraulic systems, this paper investigates directly driven hydraulic setup for non-road mobile machinery (NRMM) application. The control of the system is implemented directly with a servo motor drive without conventional hydraulic control valves, which allows accurate control and regeneration. Speed of the double-acting cylinder is determined by in-coming oil flow from the pump, out-coming flow to the hydraulic motor and angular speed of the electric motor. The paper provides a detailed analysis of the system and an evaluation of setup usage for NRMM application. Finally, possible improvements of the suggested system are discussed.

Keywords

hydraulic drives; hydraulic motors; machinery; pumps; servomotors; NRMM; accurate control; angular speed; direct driven hydraulic drive; double-acting cylinder; electric motor; electrohydraulic systems; hydraulic motor; in-coming oil flow; nonroad mobile machinery; nonroad mobile working machines; out-coming flow; pump; regeneration; servo motor drive; Educational institutions; Energy consumption; Payloads; Pumps; Servomotors; Torque; Drive; direct driven hydraulics; energy efficiency; energy-saving ratio; hydraulics; mobile machinery; non-road mobile machinery (NRMM); servomotor; variable speed drive control;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines (ICEM), 2014 International Conference on

Conference_Location

Berlin

Type

conf

DOI

10.1109/ICELMACH.2014.6960527

Filename

6960527