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TMS320F28379D: How to determine Kp, Ki and natural frequency in PLL macro

Part Number: TMS320F28379D
Other Parts Discussed in Thread: TIDA-01606, C2000WARE-DIGITALPOWER-SDK, C2000WARE

I am using the PLL macro SPLL_3ph_SRF for implementing 3 phase PLL in three phase grid connected PV inverter (https://www.ti.com/lit/an/sprabt4a/sprabt4a.pdf?ts=1627332049517).

Q1.

I am trying to understand these equations to see how natural frequency wn and controller parameters Kp and Ki were calculated. I think some piece of information is missing in these equations or there is a typo in them (screenshot attached). Please guide how exactly wn, Kp and Ki were calculated.

Q2. Could you provide me any example project where 3 phase PLL is used by TI? 

Thank you.

  • HQ,

    We use this module in TIDA-01606, the SW is available in C2000WARE-DIGITALPOWER-SDK

    C:\ti\c2000\C2000Ware_DigitalPower_SDK_3_02_00_00\solutions\tida_01606\hardware

    There is a calculation sheet also provided at above location, you can look under the SPLL Calculation. 

    -Manish 

  • Hi, Thank you for your response. 

    I downloaded the C2000WARE-DIGITALPOWER-SDK and was able to find and understand the calculation sheet provided in there.

    The only problem I am facing is running the project in CCS. I am unable to import the project in CCS. Please take a look at the screenshot attached. I am trying to import the project in CSCS from the attached location (i.e., C:\ti\c2000\C2000Ware_DigitalPower_SDK_3_02_00_00\solutions\tida_01606\source\tinv)

    Please let me know how can I import the project in CCS correctly?

  • use the below directory for the import

    C:\ti\c2000\C2000Ware_DigitalPower_SDK_3_02_00_00\solutions\tida_01606\f2837x\ccs