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TMS320F28379D: Question about Fast current loop

Green Deng
Expert 4490 points
Part Number: TMS320F28379D
Other Parts Discussed in Thread: CONTROLSUITE, C2000WARE-MOTORCONTROL-SDK, TMDXIDDK379D, C2000WARE

Dear team:

My customer wants to know if only the position information of QEP is used in the fast current loop? Because the customer sees in the routine and related documents that only the location interface is used to calculate the speed.

Does "FCL_PI_CtrlWrap(void);" include the entire current loop control? Including coordinate transformation, current loop PI, space vector algorithm.

If the resolver is used for decoding, can a fast current loop be used and how to operate it?

Best regards,

Green

  • 0
    TI__Genius 10845 points

    Hi,

    This query has been assigned to the expert. Please expect delay in response due to the US holiday on Monday.

    Thanks
    Vasudha

  • +1 in reply to Vasudha Bhadoria
    TI__Guru** 116140 points
    Green Deng said:
    My customer wants to know if only the position information of QEP is used in the fast current loop? Because the customer sees in the routine and related documents that only the location interface is used to calculate the speed.

    Most of the the existing FCL projects are based on QEP encoder.

    Green Deng said:
    Does "FCL_PI_CtrlWrap(void);" include the entire current loop control? Including coordinate transformation, current loop PI, space vector algorithm.

    You may look at the source code of "FCL_PI_CtrlWrap" in the project that includes current Clark, Park, PI, iPark and SVGEN, almost all of the FOC loop.

    Green Deng said:
    If the resolver is used for decoding, can a fast current loop be used and how to operate it?

    Yes, replace the position angle from QEP encoder by the angle from Resolver in the project.

  • 0 in reply to Yanming Luo
    TI__Expert 4490 points

    Hi Yanming:

    The client mentioned that the source code of "FCL_PI_CtrlWrap" in the project cannot be viewed. The customer uses the IDDKv2_PM_Servo_F2837x_FCL_Example01 routine. This function in the routine seems to be encapsulated and cannot be viewed.

  • +1 in reply to Green Deng
    TI__Guru** 116140 points

    You may refer to the example FCL projects in Motor Control SDK that includes the source codes of the FCL algorithm. The examples in controlSUITE uses the FCL library, so the code of these functions can't be viewed.

     

    C2000WARE-MOTORCONTROL-SDK: https://www.ti.com/tool/C2000WARE-MOTORCONTROL-SDK

     

    FCL example project:

    C:\ti\c2000\C2000Ware_MotorControl_SDK_<version>\solutions\tmdxiddk379d\f2837x