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Transformer Mathmatical Modelling

  1. Mar 11, 2012 #1

    I would like to do the mathmatical modelling then apply it in matlab. This is my trailier.

    Vp-ip*Rp-Lp*(dip/dt)-Rc*ic = 0 ----- 1
    Vp-Lm*(dim/dt) = 0 ------2
    i need the modelling of the secondary voltage to the primary and the flux

    Vs= ?
    flux= ?

    I did apply it in matlab but didn't work.
  2. jcsd
  3. Mar 13, 2012 #2
    up .................
  4. Mar 13, 2012 #3
    I know nothing about mathlab. But from a transformer analysis point of view:
    Xp and Xs should be combined.
    Do modeling at no load and also at full load.
    At no load Xp, Xs, Rp and Rs can be ignored.
    At full load Rc and Xm can be ignored

    Above simplification can be used for normal transformers. There are some extremely rare exceptions where the preceding is not true.

    Some transformers engineers say Xp and Xs can not be combined. I am in the group that say they can be combined.
  5. Mar 13, 2012 #4


    User Avatar

    Staff: Mentor

    That can't possibly be right.
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