Electric energy recovery system efficiency in a hydraulic forklift

Author

Minav, Tatiana A. ; Laurila, Lasse I E ; Immonen, Paula A. ; Haapala, Mari E. ; Pyrhönen, Juha J.

Author_Institution

Lappeenranta Univ. of Technol., Lappeenranta, Finland

fYear

2009

fDate

18-23 May 2009

Firstpage

758

Lastpage

765

Abstract

The purpose of this research is to find possibilities to recover electric energy in a hydraulic forklift system. The drive consists of a DTC controlled electric servo motor directly running a reversible hydraulic pump. A real system was built and tested, especially, from the energy recovery point of view. Results of the system were analyzed and compared and according to them, energy can be recovered efficiently from the hydraulic forklift system. Also new ideas and directions of further research were obtained during the research.

Keywords

fork lift trucks; hydraulic systems; machine control; motor drives; pumps; servomotors; DTC controlled electric servo motor drive; electric energy recovery system efficiency; hydraulic forklift; hydraulic pump; Control systems; Energy efficiency; Engine cylinders; Petroleum; Servomechanisms; Servomotors; Synchronous motors; System testing; Torque control; Valves; Electric energy recovery; electric servo drive; forklift; hydraulics;

fLanguage

English

Publisher

ieee

Conference_Titel

EUROCON 2009, EUROCON '09. IEEE

Conference_Location

St.-Petersburg

Print_ISBN

978-1-4244-3860-0

Electronic_ISBN

978-1-4244-3861-7

Type

conf

DOI

10.1109/EURCON.2009.5167719

Filename

5167719