Title :
Comparative Analysis of Eddy-Current Loss in Permanent Magnet Synchronous Machine Considering PM Shape and Skew Effect Using 3-D FEA
Author :
Min-Mo Koo ; Jang-Young Choi ; Keyyong Hong ; Kangsu Lee
Author_Institution :
Dept. of Electr. Eng., Chungnam Nat. Univ., Daejeon, South Korea
Abstract :
In this paper, eddy-current loss in permanent magnets (PMs) due to the armature reaction field of a PM synchronous machine was analyzed. Various techniques, including numerical techniques such as finite element analysis (FEA), enable the accurate prediction and analysis of magnetic field distribution with saturation effects. Furthermore, the eddy-current loss can be easily analyzed using a commercial software. 3-D FEA is essential when considering the stator skew effect. In particular, the influence of time harmonics in armature current and space harmonics due to distributed magnetomotive force on the eddy current loss is thoroughly investigated and discussed on the basis of 3-D FEA.
Keywords :
eddy current losses; finite element analysis; permanent magnet machines; synchronous machines; 3D FEA; PM synchronous machine; armature current; armature reaction field; distributed magnetomotive force; eddy-current loss; finite element analysis; magnetic field distribution; permanent magnets; saturation effects; space harmonics; stator skew effect; time harmonics; Analytical models; Eddy currents; Harmonic analysis; Shape; Stator windings; Three-dimensional displays; 3-D finite element analysis (FEA); 3D FEA; PM shape; eddy current loss; permanent magnet (PM) shape; skew effect;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2015.2442240
