Extended Anisotropic Layer Theory for Electrical Machines

Author

Sprangers, R.L.J. ; Motoasca, T.E. ; Lomonova, E.A.

Author_Institution

Dept. of Electr. Eng., Electromech. & Power Electron. Group, Eindhoven Univ. of Technol., Eindhoven, Netherlands

Volume

49

Issue

5

fYear

2013

fDate

May-13

Firstpage

2217

Lastpage

2220

Abstract

The Anisotropic Layer Theory (ALT) has been extensively used for electric machine analysis, due to its ability to take finite iron permeability into account globally. However, the effect of the slot openings, which are often present in slotted electrical machines, is neglected. In this work, an extension of the ALT to account for slot openings is proposed. The classical ALT is combined with the Harmonic Modeling Technique (HMT) for slotted structures by assuming infinitely permeable tooth tips. A semi-analytical solution is described for the classical and the extended ALT model. The results of the semi-analytical models are compared to Finite Element Analysis (FEA) results.

Keywords

electric machines; finite element analysis; machine theory; HMT; Harmonic Modeling Technique; classical ALT model; electric machine analysis; extended ALT model; extended anisotropic layer theory; finite element analysis; finite iron permeability; infinitely permeable tooth tips; semianalytical models; semianalytical solution; slot opening effect; slotted electrical machines; slotted structures; Anisotropic layer theory; electrical machines; harmonic modeling; mode matching;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2013.2238903

Filename

6514609