DocumentCode :
60117
Title :
3-D FEM Calculation of Electromagnetic Properties of Single-Phase Induction Machines
Author :
Bacher, Johann ; Waldhart, Florian ; Muetze, Annette
Author_Institution :
Electr. Drives Inst., Graz Univ. of Technol., Graz, Austria
Volume :
30
Issue :
1
fYear :
2015
fDate :
Mar-15
Firstpage :
142
Lastpage :
149
Abstract :
In comparison with three-phase induction machines, modern single-phase induction machines normally have skewed rotors, but show an elliptic magnetic field during start-up. In order to properly model the start-up of such a machine, this three-dimensional (3-D) characteristic has to be accounted for. This leads to the application of the 3-D finite-element method. This paper will introduce a new approach to model and analyze the start-up of such a single-phase machine, with the aim of higher computational efficiency. Furthermore, this paper will discuss how symmetries, both in the circumferential direction and along the motor shaft, can be exploited despite the skewing. This is achieved through transforming (rotating) the cutting plane, doubling the skewing angle, and increasing the rotor conductor conductivity. The analysis is carried out on a small two-pole 100-W machine used for household appliances. The theoretical results are compared with experimental results for six rotors; each with a different skewing angle.
Keywords :
asynchronous machines; finite element analysis; magnetic fields; rotors; 3-D FEM; electromagnetic properties calculation; finite-element method; magnetic field d; power 100 W; rotor conductor conductivity; rotors; single-phase induction machines; three-phase induction machines; Computational modeling; Finite element analysis; Induction machines; Integrated circuit modeling; Rotors; Solid modeling; Torque; Electromagnetic fields; electromagnetic forces; finite-element method (FEM); induction machines; single-phase machines; squirrel-cage machines;
fLanguage :
English
Journal_Title :
Energy Conversion, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-8969
Type :
jour
DOI :
10.1109/TEC.2014.2346792
Filename :
6894206
Link To Document :
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