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saturable core modelling in PSpice

Discussion in 'Electrical Engineering' started by Adam M, Dec 2, 2003.

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  1. Adam M

    Adam M Guest

    Hi folks,

    I'm trying to create a model of a practical 3-winding transformer - by using
    an ideal transformer and adding discrete components to model the losses etc.

    I want to create a saturable-core inductor to place accross the terminals of
    the primary of the ideal transformer to model the B-H curve.

    I've read a bit about how to do this, but everything seems to be aimed at
    "SPICE 3", and I'm using PSpice in windows. (I'm a novice!)

    What should I do? Does anyone know of downloadable saturable-core inductor
    models? Or somewhere else I should go for a tutorial on this?

    Thanks in advance!

  2. Hello Adam

    If you are a novice, you are taking on a real challenge. I have done some
    modelling of iron core devices using Spice 3, and I did not think PSpice is
    that different. One approach that I have used successfully for some purposes
    is to model the hysteresis loop as two inductors and to switch between the
    unsaturated inductance, and the saturated inductance using switches
    controlled from a circuit calculating the value of the flux. Applying this to
    a 3 winding transformer would be quite interesting.

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