DocumentCode
2928780
Title
Proper finite-element discretization for torque computation of cage induction motors
Author
Arkkio, Antero ; Hannukainen, Antti
Author_Institution
Dept. of Electr. Eng., Aalto Univ., Aalto, Finland
fYear
2012
fDate
20-22 June 2012
Firstpage
1456
Lastpage
1461
Abstract
In finite-element analysis of electrical machines, torque is typically computed using a method based on Maxwell´s stress or virtual work. The accuracy of these methods is sensitive to the quality of the finite-element mesh in the air-gap region. The effects of the spatial discretization on the computed torque are studied. Power balance of the electrical machine is used as a reference to assess the accuracy of the direct torque computation.
Keywords
air gaps; mesh generation; squirrel cage motors; stress analysis; Maxwell stress; air-gap region; cage induction motors; direct torque computation; electrical machines; finite-element discretization analysis; finite-element mesh analysis; power balance; spatial discretization effect; Accuracy; Equations; Finite element methods; Mathematical model; Rotors; Shape; Torque;
fLanguage
English
Publisher
ieee
Conference_Titel
Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), 2012 International Symposium on
Conference_Location
Sorrento
Print_ISBN
978-1-4673-1299-8
Type
conf
DOI
10.1109/SPEEDAM.2012.6264430
Filename
6264430
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