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# Re: [femm] Eddy currents in thick laminations

- To: <femm@yahoogroups.com>
- Subject: Re: [femm] Eddy currents in thick laminations
- From: "Paulo Pereirinha" <ppereiri@isr.uc.pt>
- Date: Wed, 24 Oct 2001 13:18:44 +0100
- References: <9r3p0h+d81r@eGroups.com>

    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@magtech.co.uk>
    To: <femm@yahoogroups.com>
    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
    >
    >
    >
    >
    >
    >
    >
    > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
    >

- References:
  - Eddy currents in thick laminations
    - From: Douglas@magtech.co.uk

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