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  • Eddy current losses in large air coils with layered stranded conductors
    Preis, Kurt ...
    A procedure based on the finite-element method (FEM) is presented to determinethe eddy currents and losses in large axisymmetric filter air coils built with a special type of turns. To reduce the ... eddy current losses, the turns consist of several single insulated copper wires which are twisted similarly to a cable to form a conductor. Therefore, axiszmmetry in the cable is destroyed. Since the wires are not stranded perfectly within the cable (they are stranded within layers only), there is a non-uniform current distribution between the different layers. To take this into account and still retain axiszmmetry, an FEM procedure using a one component vector potential combined with circuit considerations has been used where the single wires of the cable are located in a special manner to simulate their stranding within their respective lazers. The numerical results are validated by measurements showing excellent agreement.
    Vir: IEEE transactions on magnetics. - ISSN 0018-9464 (Vol. 44, no. 6, Jun. 2008, str. 1318-1321)
    Vrsta gradiva - članek, sestavni del
    Leto - 2008
    Jezik - angleški
    COBISS.SI-ID - 12327190

    Povezava(-e):

    http://dx.doi.org/10.1109/TMAG.2007.915829
    DOI

vir: IEEE transactions on magnetics. - ISSN 0018-9464 (Vol. 44, no. 6, Jun. 2008, str. 1318-1321)
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