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Dear sirs,

 

I have some doubts regarding the iron losses model. We are simulating a simple ring core transformer with a material loaded from the library and defined by its k1,k2,k3, alpha1, alpha2, alpha3 parameters.

The results from the simulations are quite acceptable.

In order to draw a graphic with the power losses versus the maximum induction, I have used the Bertotti modified model equation using the same parameters used by the program. Surprisingly for me, the values obtained with equation are very far from those obtained as a result of the simulation.

 

How can this be possible? What could be the reason for it? Thanks for your help

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Hello Andoni,

Please, could you explain a little more how are you using the losses formula and what formula is it ? Is it the one which appears in page 7 in the pdf I have sent you some weeks ago?

Are you applying it node by node or are you doing some assumptions?

If Flux is delivering convincing values and they diverge from your approximations it seems that some disagreement between both models (numerical and analytical) exists.

Best regards.

Andoni Garcia likes this

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On 7/3/2019 at 2:47 PM, Alejandro Rodríguez said:

Hello Andoni,

 

 

Please, could you explain a little more how are you using the losses formula and what formula is it ? Is it the one which appears in page 7 in the pdf I have sent you some weeks ago?

 

 

Are you applying it node by node or are you doing some assumptions?

 

 

If Flux is delivering convincing values and they diverge from your approximations it seems that some disagreement between both models (numerical and analytical) exists.

 

 

Best regards.

 

Hi Alejandro!

 

Thank you for your answers. The formula was the Steady Bertotti modified with he mass representation in there; ignore it, I was complicating matters.

The trouble dwelled in a small mistake I made in the geometry, that was the reason why I got a "strange" solution.

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