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# Re: [femm] LEAKAGE REACTANCE

- To: femm@yahoogroups.com
- Subject: Re: [femm] LEAKAGE REACTANCE
- From: dcm3c@aol.com
- Date: Wed, 24 Oct 2001 10:04:54 EDT

    In a message dated 10/23/01 9:43:16 AM Eastern Daylight Time,
    obilgin@selcuk.edu.tr writes:

    > Hi every body,
    >
    > To be able to calculate the leakage reactance of stator and totor do we
    have
    > to use real part of the time harmonic solution.
    > best regards.

    This sort of depends on what you are doing. If you are trying to find things
    like slot leakage, a magnetostatic solution of just one of the slots ought to
    be sufficient.

    When you are doing time-harmonic problems, the real and imaginary parts
    represent the field at different points in time. For example, if you are
    interested in some complex value u = ur + j*ui, you could convert this into
    an explicit function of time via: u(t) = ur*Cos[omega*t] - ui*Sin[omega*t]
    If you are looking, for example, at a flux linkage in a time-harmonic
    problem, you could very well get a complex value. The magnitude of the
    complex value is the peak flux linkage over the cycle, and the split between
    the real and imaginary parts tells you about the phasing.

    Dave.

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