Conference Proceeding

Effect of PMSM sizing on the energy efficiency of an electro-hydraulic forklift

Dept. of Electr. Eng., Lappeenranta Univ. of Technol., Lappeenranta, Finland
10/2010; DOI:10.1109/ICELMACH.2010.5608110 pp.1 - 6 In proceeding of: Electrical Machines (ICEM), 2010 XIX International Conference on
Source: IEEE Xplore

ABSTRACT This paper investigates the effect of a permanent magnet synchronous machine (PMSM) drive on the efficiency of an electric energy recovery system of a hydraulic forklift. The control of the system is implemented directly with a permanent magnet AC servo motor drive without control valves. The paper provides accurate evaluation of the hydraulic system and the electric part of the working machine. An analysis of the theoretical model is made and the model is verified by practical results. Finally, possible improvements of the efficiency in the suggested system are estimated.

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Keywords

accurate evaluation
 
control valves
 
electric energy recovery system
 
electric part
 
paper investigates
 
permanent magnet AC servo motor drive
 
permanent magnet synchronous machine
 
PMSM
 
possible improvements
 
practical results
 
suggested system
 
theoretical model
 

T.A. Minav