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

- To: femm@yahoogroups.com
- Subject: How to simulate a short circuit on a few turns to get the leakage inductance when very bad coupling.
- From: john fox <jire602000@yahoo.com>
- Date: Mon, 30 Dec 2002 11:07:47 -0800 (PST)

    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!

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Attachment: `testV.FEM`
Description: testV.FEM

Attachment: `testI.FEM`
Description: testI.FEM

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  - Re: [femm] How to simulate a short circuit on a few turns to get the leakage inductance when very bad coupling.
    - From: Santiago Salamanca <santiago@salamanca.de>
  - 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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