Title :
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
fDate :
6/1/2012 12:00:00 AM
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;
Journal_Title :
Industrial Electronics, IEEE Transactions on
Conference_Location :
4/29/2011 12:00:00 AM
DOI :
10.1109/TIE.2011.2148682
