Permanent Magnet Synchronous Machine Sizing: Effect on the Energy Efficiency of an Electro-Hydraulic Forklift

Author

Minav, Tatiana A. ; Pyrh?¶nen, Juha J. ; Laurila, Lasse I E

Author_Institution

Dept. of Electr. Eng., Lappeenranta Univ. of Technol. (LUT), Lappeenranta, Finland

Volume

59

Issue

6

fYear

2012

fDate

6/1/2012 12:00:00 AM

Firstpage

2466

Lastpage

2474

Abstract

The energy efficiency of an electro-hydraulic forklift is significantly improved by using a permanent-magnet-synchronous-motor-servo-drive-based direct pump control to control the position of the fork without control valves. This paper provides a short evaluation of the hydraulic system and a more detailed analysis of the losses of the electric machine drive system. A theoretical approach is taken and the results are verified by practical measurements. Finally, possible improvements of the energy efficiency in the suggested system are discussed.

Keywords

hydraulic motors; machine control; permanent magnet motors; position control; servomotors; synchronous motor drives; direct pump control; electric machine drive; electro-hydraulic forklift; energy efficiency; permanent magnet synchronous machine sizing; permanent magnet synchronous motor servo drive; position control; Converters; Electrohydraulics; Energy consumption; Energy efficiency; Permanent magnet motors; Power conversion; Rotors; Stator windings; Synchronous motors; Electro hydraulics; energy consumption; energy conversion; energy efficiency; hydraulic system; motor drives; permanent magnet machines; power conversion;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

Conference_Location

4/29/2011 12:00:00 AM

ISSN

0278-0046

Type

jour

DOI

10.1109/TIE.2011.2148682

Filename

5759081