Analytical modeling of rotating eddy-current couplers

Author

Canova, Aldo ; Vusini, Bruno

Author_Institution

Dipt. di Ingegneria Elettrica Ind., Politecnico di Torino, Turin, Italy

Volume

41

Issue

1

fYear

2005

Firstpage

24

Lastpage

35

Abstract

We present a detailed analytical study of rotational eddy-current couplers. We provide a field solution by the variable separation method, and we analyze radial geometry structures. The couplers consist of a permanent-magnet stator and a multilayer conductive rotor. We present different analytical solutions in order to study single- and double-sided permanent-magnet frames. We validate the models by two-dimensional and three-dimensional (3-D) finite-element studies, and we perform an exhaustive parametric analysis to estimate the influence of the dimension parameters of the two structures. Finally, we present an analytical approach to a 3-D correction.

Keywords

coupled circuits; eddy currents; finite element analysis; permanent magnet machines; rotors; stators; dimension parameters; finite element method; multilayer conductive rotor; parametric analysis; permanent-magnet frames; permanent-magnet stator; radial geometry structures; rotational eddy-current couplers; variable separation method; Analytical models; Conducting materials; Couplers; Finite element methods; Magnetic analysis; Magnetic fields; Magnetic materials; Performance analysis; Permanent magnets; Two dimensional displays;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2004.839730

Filename

1381503