Nonlinear transformer model for simulation in LTSpice

  • Thread starter alan123hk
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  • #1
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Main Question or Discussion Point

I am looking for a comprehensive nonlinear transformer model, which should be available free, readily available for simulation in LTSpice and able to take account of various factors of nonlinear transformer including hysteresis characteristic, skin and proximity effect, leakage inductance, hysteresis loss and eddy current loss...etc

Any help would be greatly appreciated.
 

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  • #2
berkeman
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I am looking for a comprehensive nonlinear transformer model, which should be available free, readily available for simulation in LTSpice and able to take account of various factors of nonlinear transformer including hysteresis characteristic, skin and proximity effect, leakage inductance, hysteresis loss and eddy current loss...etc

Any help would be greatly appreciated.
What have you found in your searches so far? Can you post some of the models that come the closest to what you want?
 
  • #3
eq1
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Personally, I usually use behavioral sources against the ideal model to just directly implement whatever system of equations (obviously there are multiple options with various trade-offs) you plan to use to model the transformer. I find that easiest.

Note: A b-source can even take derivatives and integrals, etc.
http://ltwiki.org/?title=B_sources_(complete_reference)

If you prefer a schematic based approach to build up the model you'll likely find this link helpful.
http://ltwiki.org/?title=Transformers
 
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  • #4
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What have you found in your searches so far? Can you post some of the models that come the closest to what you want?
I have found several nonlinear transformer spice models. They are good and very similar. This is an example below.
http://www.beigebag.com/case_xfrmer_1.htm

However, I still hope to be more comprehensive, easier to use, and more importantly based on the existing nonlinear inductor model in LTspice. This helps simplify the simulation preparation in LTspice
 
  • #5
161
58
Personally, I usually use behavioral sources against the ideal model to just directly implement whatever system of equations (obviously there are multiple options with various trade-offs) you plan to use to model the transformer. I find that easiest.

Note: A b-source can even take derivatives and integrals, etc.
http://ltwiki.org/?title=B_sources_(complete_reference)

If you prefer a schematic based approach to build up the model you'll likely find this link helpful.
http://ltwiki.org/?title=Transformers
This is exactly what I am looking for.
thank you for your help.
 
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  • #6
Henryk
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Google "ferrite cores Pspice". You will find actual model data for a large number of commercial ferrite cores.
 

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