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TMS320F28377D: TIDA-01606: TINV_idRef_pu definition

Linda Zhang84708
Expert 5170 points
Part Number: TMS320F28377D

Hello Champs,

As described in "TIDUE53F" Chapter 3.2.3.2 as below:

Regarding "the TINV_idRef_pu is defined with a negative sign for PFC mode of operation and with a positive sign for inverter mode of operation",  are "a negative sign for PFC mode" and "a positive sign for inverter mode"

both defined according to software requirement or can be defined inversely? Would you please help?

Thanks!

Best Regards,

Linda

  • 0
    TI__Intellectual 2830 points

    Hi Linda,

    in the existing code example for Lab 6 the  TINV_idRef_pu  is defined like mentioned above. If you would like to test the system with this example the definition has to stay like that.

    In general, if you would like to rewrite parts of the software, then there might be the option to change this definition as well, but I would not recommend that.

    Is there a specific reason why the sign of this variable should be inverted in your case?

    Best regards,

    Andreas

  • 0
    TI__Intellectual 2110 points

    Hi Linda,

    I will try to summarize below the most important point related to TINV_idRef_pu.

    This value can be positive and negative:

    • Positive means that the active power will flow from the DC bus toward the grid
    • Negative means that the active power will flow from the grid toward the DC bus.

    When running the AC/DC with a resistor connected to the DC bus, it will just make sense to run loops with negative current. The resistor cannot push power toward the grid.

    When running the AC/DC with a DC source connected to the DC bus, the current can be both positive or negative if DC source is bidirectional in power.

    Thanks and Best Regards

    Riccardo