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Flux distribution in transformers

  1. May 31, 2009 #1
    Dear all members , i am glad to open a new topic

    well , let's get into the main point quickly

    you know that transformers is build on the idea that energy is transfered from one winding to the other by the transferring of flux form primary winding to secondry winding

    well ,to make the flux go or flow in the direction desired (i.e to force the flux to cut the secondry winding and minimize the leakage flux ) we add iron core

    this is very good in case of single phase transformer as flux move from one side to the other inside the core

    but in case of 3-phase transformers where the primary and secondry windings are concentric
    how the flux flow in the core and at the same time cut the secondry

    what i mean is : the flux can cut the secondry winding but easier for it to flow inside the core as the path used to cut the windings is to flow first in air then in the windings

    if any body have a photo for the distribution of flux in 3-phase transfromers windings and core i will be very glad

    i hope all can join in this topic also if anybody have a question regarding the magnetism it will be very good to post

  2. jcsd
  3. Jun 1, 2009 #2


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    Staff: Mentor

    Welcome to the PF. I don't know the answer to your question, but a goodle search on "three-phase transformer" returned lots of good-looking hits. Here's the hit list:


  4. Jun 2, 2009 #3
    The important term in magnetic induction is linking not cutting, material core in three phase and single phase transformers lead curl of produced flux to best linking of primary and secondary winding with magnetic flux. Please refer to attached figure.

    Creative thinking is enjoyable, Then think about your surrounding things and other thought products. http://electrical-riddles.com
    Last edited: Jun 2, 2009
  5. Jun 2, 2009 #4
    figure of that post 112.GIF
  6. Jun 2, 2009 #5


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    Science Advisor
    Gold Member

    Here's a Ipaper on transformer construction basics that have some pictures of windings and cores.
    http://www.scribd.com/doc/8935188/Transformer-BasicsPDF" [Broken]
    Last edited by a moderator: May 4, 2017
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