Two-dimensional Cartesian air-gap element (CAGE) for dynamic finite-element modeling of electrical machines with a flat air gap

Author

Wang, R. ; Mohellebi, H. ; Flack, T.J. ; Kamper, M.J. ; Buys, J.D. ; Feliachi, M.

Author_Institution

Dept. of Electr. Eng., Univ. of Stellenbosch, Matieland, South Africa

Volume

38

Issue

2

fYear

2002

fDate

3/1/2002 12:00:00 AM

Firstpage

1357

Lastpage

1360

Abstract

This paper extends the air-gap element (AGE) to enable the modeling of flat air gaps. AGE is a macroelement originally proposed by Abdel-Razek et al. (IEEE Trans. Magn., vol. 17, pp. 3250-3252, 1981; ibid., vol. 18, pp. 655-659, 1982) for modeling annular air gaps in electrical machines. The paper presents the theory of the new macroelement and explains its implementation within a time-stepped finite-element (FE) code. It validates the solution produced by the new macroelement by comparing it with that obtained by using an FE mesh with a discretized air gap. It then applies the model to determine the open-circuit electromotive force of an axial-flux permanent-magnet machine and compares the results with measurements

Keywords

air gaps; electric machine analysis computing; electric potential; finite element analysis; linear motors; permanent magnet generators; 2D Cartesian air-gap element; FE mesh; air-gap element; annular air gaps; axial-flux permanent-magnet machine; discretized air gap; dynamic finite-element modeling; electrical machines; finite-element methods; flat air gap; flat air gap modeling; linear motors; macroelement; magnetic fields; mesh generation; open-circuit electromotive force; permanent magnet generators; time-stepped finite-element code; Africa; Air gaps; Finite element methods; Force measurement; Helium; Iron; Magnetic field measurement; Mesh generation; Permanent magnet motors; Rotating machines;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.996024

Filename

996024