Bertotti parameters

Bogdan Butnariu
Bogdan Butnariu New Altair Community Member
edited June 2021 in Community Q&A

Hello
I started studying my own engine, an IPM engine and it is not clear to me how to determine those Berotti parameters. (k1 k2 k3 and a1 a2 a3).
My motor must be at a frequency of 50 Hz, but from the results it shows me 100Hz, I took the Flu 270_35A material directly from the program without making any changes.
From what I read I have to declare those parameters specified above.
Eventually if someone has those parameters, can they help me with them?
Thanks and have a good day.

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Answers

  • Farid zidat_20516
    Farid zidat_20516
    Altair Employee
    edited May 2021

    Hello Bogdan;

     

    There is an excel too supplied with Flux to identify these parameters from measurements losses. Please have a look on the help to get more information on how to use this identification tool, as well as more information on iron losses computation.

     

    The losses table can be found from suppliers website like cogent for instance, or you have to make a measurements.

     

    Regards 

     

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  • SimonGuicheteau
    SimonGuicheteau
    Altair Employee
    edited June 2021

    Also, once the Bertotti model coefficients are fitted, we assume the coefficients are valid for all frequencies. The excel file provided since 2021 is able to fit for various frequencies anyway.

    Best regards

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