Re: [femm] Eddy currents in thick laminations

["Paulo Pereirinha" <ppereiri@xxxxxxxxx>]

For linear material, an analytical 1D expression considering skin effect,
can be found in:

[1] Gyselinck, J.; Vandevelde, L.; Melkebeek, J.; Dular, P.; Henrotte, F.;
Legros, W., Calculation of eddy currents and associated losses in electrical
steel laminations, IEEE Trans. Magn., vol. 35, pp. 1191-1194, 1999.
(equations (8) and (9)).

Paulo Pereirinha

--------------------------------------------------------------------
Eng. Paulo J. G. Pereirinha (Eq. Prof. Adj., ISEC-IPC)
Departamento de Engenharia Electrotécnica
ISR, Lab. CAD/CAE
Universidade de Coimbra, Pólo II
P-3030-290 COIMBRA , PORTUGAL
+351 239 796322 (tel./fax)

----- Original Message -----
From: <Douglas@xxxxxxxxxxxxx>
To: <femm@xxxxxxxxxxxxxxx>
Sent: Tuesday, October 23, 2001 1:49 PM
Subject: [femm] Eddy currents in thick laminations


> Problem:
>
> How does one approach determining the eddy-current losses in
> a "laminated material" with a thickness of several millimeters and
> where the frequency under consideration is greatly above the more
> usual 50-60Hz range. Surely the skin depth must now become an issue,
> as the lamination is no longer a "thin" conductor with uniform
> current density. The simpler (freshman textbook type) formulas no
> longer apply? Any pearls of wisdom would be most appreciated.
>
> Douglas Stevenson
>
>
>
>
>
>
>
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