Re: About leakage inductance in transformers


"Terry Given" <my_name@xxxxxxxx> wrote in message
news:1173039344.966286@xxxxxxxxxx
MassiveProng wrote:
On Mon, 05 Mar 2007 08:35:13 +1300, Terry Given <my_name@xxxxxxxx>
Gave us:


BTW It is possible to make 50/60Hz mains transformers with very little
core material - just a post inside the concentric windings. Of course the
magnetising inductance is low, so Imag is high, and they puke flux
everywhere, but the core losses are extremely low (what with there being
mostly no core), and the overall result can be cost-effective.


Bwuahahahahahahaha!

its called a partial-core transformer.

http://www.ewh.ieee.org/r10/nzs/IEEENZS_Postgrad_Presentations_2006.pdf

contains a brief description of such a device.

Prof. Bodger at Canterbury University, NZ, has done a lot of work on
these.


Cheers
Terry

Terry, responding to MassiveWrong is like trying to piss into the wind, it
all comes back in your face.
Cheers,
Harry


.

Relevant Pages

  • Re: About leakage inductance in transformers
    ... Of course the magnetising inductance is low, so Imag is high, and they puke flux everywhere, but the core losses are extremely low, and the overall result can be cost-effective. ... I thought others might be interested in partial core transformers though. ...
    (sci.electronics.design)
  • Re: About leakage inductance in transformers
    ... core material - just a post inside the concentric windings. ... Of course the magnetising inductance is low, so Imag is high, and they puke flux everywhere, but the core losses are extremely low, and the overall result can be cost-effective. ...
    (sci.electronics.design)
  • Re: forward converter, higher Bmax through gap?
    ... If you gap the core then magnetising inductance drops and the ripple ... The peak and peak to peak flux remain the ... Makes no reference to the magnetic path length, Le, or associated gap, ...
    (sci.electronics.design)
  • Re: forward converter, higher Bmax through gap?
    ... |> If you gap the core then magnetising inductance drops and the ripple ... |> during flyback on transformer reset there are few reasons to gap the ...
    (sci.electronics.design)
  • Re: forward converter, higher Bmax through gap?
    ... > If you gap the core then magnetising inductance drops and the ripple ... The peak and peak to peak flux remain the ... > Makes no reference to the magnetic path length, Le, or associated gap, ...
    (sci.electronics.design)
Loading