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TIDA-010210: SFRA result

Wayne Huang
Genius 16325 points
Part Number: TIDA-010210
Other Parts Discussed in Thread: SFRA

Dear Champs,

I am asking this for our customer.

In the doc, it says SFRA is used.

Do you have SFRA results like gain/phase margin etc?

Wayne

  • 0
    TI__Expert 3270 points

    Hi Wayne,

    SFRA in terms of software is implemented currently but it needs the proper rescaling.

    The code in TIDA 010210 has not been written in P.U (per unit) but in absolute value (e.g. you impose 5 A of reference in the code, in the output you control 5 real A).

    SFRA normally is written in PU and this is the reason why a resclailing between PU and absolute value is required if you would like to run properly SFRA.

    On the other hand, the values of Kp and Ki has been calculated properly and can allow to run the converter without any issue a multiple different operating points (different DC bus voltage, strong or weak grid etc. ).

    Thanks

    Best Regards

    Riccardo