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- To: femm@yahoogroups.com
- From: Alberto Perez <albertoperarnau@yahoo.es>
- Date: Wed, 3 Oct 2001 13:28:02 +0200 (CEST)

    Hello

    Thanks for your answers about induction motor. I have
    another doubt about histeresis and laminate eddy
    currents loses. I have to calculate loses in stator
    and rotor, for calculation stator loses I use a
    frecuency of 50 Hz and for rotor I use a frecuency of
    0,5 Hz for slip,

    is it correct to calculate total loses with the sum of
    two loses?

    Loses stator = 48.9 W/m
    Loses rotor = 6.72 W/m
    Total loses =55.62 W/m

    My lamination have thickness=0.5mm and my motor have
    800 laminations. I suppose that total loses are in W
    55.62*0.5e-3*800= 22.248 W, loses are small because my
    motor have loses of kW. I define 3 MS/m, d=0.5 mm, F=1
    and histeresis angle 20º. Why are loses small?

    About small skin depth, when does this boundary use?
    Is this the problem?

    Thank you

    Alberto Pérez Perarnau

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