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# Re: How to simulate a short circuit on a few turns to get the leakage inductance when very bad coupling.

- To: femm@yahoogroups.com
- Subject: Re: How to simulate a short circuit on a few turns to get the leakage inductance when very bad coupling.
- From: "jire602000 <jire602000@yahoo.com>" <jire602000@yahoo.com>
- Date: Thu, 02 Jan 2003 12:00:54 -0000
- In-reply-to: <3E1208E2.5010102@ieee.org>
- User-agent: eGroups-EW/0.82

    --- In femm@yahoogroups.com, David Meeker <dmeeker@i...> wrote:
    > john fox wrote:
    >
    > > Hello every body and happy new year !
    > >
    > > I did not get any answer from my last question on this
    > > subject .
    > >
    > > So attached two examples at 25Khrz.
    > >
    > > The geometry is the same
    > > Input= 7 turns with one amps each.
    > > Output= 4 turns that I want to put on short circuit .
    > > How to do that ! Help !
    > >
    > > I have made a first test TESTV.FEM with Voltage=0 .
    > > Not good the current is not the same in each turn. It
    > > looks like each turns are individually shorted and not
    > > the for 4 turns from one point to another.
    > > I have made a second test TESTI.FEM with -1A in each
    > > turn. It looks better ! but it is only a guess . I
    > > have taken the global current from TestV for the 4
    > > wires and divided by 4 which conduct to -1A.
    > >
    > > So , I need help and advise. How to proceed to be sure
    > > of the result in order to have leakage inductance +
    > > skin effect losses in the wires!
    >
    > You can't do what you want with just one simulation. However, you
    can
    > do it with two. See attached.
    >
    > Dave.
    > --
    OK thanks !
    So from the Matrix , when V2=0 , I2=-I1*Z2/Z3
    This makes when I1=1A+j0A , I2=-1.07A+j0.033A
    Theses are the walues that will put in the simulation for V2=0
    (secondary shorted). And I will get by that way the losses,
    leakage field, strength ...
    get the real situation of system with stre

    > David Meeker
    > email: dmeeker@i...
    > www: http://femm.berlios.de/dmeeker

- References:
  - Re: [femm] How to simulate a short circuit on a few turns to get the leakage inductance when very bad coupling.
    - From: David Meeker <dmeeker@ieee.org>

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