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TMS320F280049C-Q1: tms320f280049c

sagar yadav1
Intellectual 470 points

Part Number: TMS320F280049C-Q1

Hello,

I am referring Universal MotorControl Lab code  I have following query. I am using PMSM motor with Hall effect sensor.

1. What should be the output voltage sensing format - L- Ll or L- N .My I need voltage sensing for all three phases and any specific hw filter required.

2.Is it ok If I am using Current transformer for Output current voltage sensing.

3. I am using Hall effect sensor . what is the need of  MOTOR_SEEK_POS , MOTOR_ALIGNMENT .

4. what is the logic are used for the same because Hall effect sensor is always give us rotor angle.

5.what is the used of Motor Identification.

What is the difference between instaspin and FAST estimator . Which is better and easy to integrate.

Regards,

  • 0
    TI__Guru** 117230 points
    sagar yadav1 said:
    1. What should be the output voltage sensing format - L- Ll or L- N .My I need voltage sensing for all three phases and any specific hw filter required.

    It's the phase voltage (L-N).

    sagar yadav1 said:
    2.Is it ok If I am using Current transformer for Output current voltage sensing.

    Not sure. It could be a problem if you don't know the delay of the sensor or the delay is large.

    sagar yadav1 said:
    3. I am using Hall effect sensor . what is the need of  MOTOR_SEEK_POS , MOTOR_ALIGNMENT .

    It's better to enable MOTOR_ALIGNMENT and MOTOR_OL_START as shown in the lab. MOTOR_SEEK_POS is only for flying start feature.

    sagar yadav1 said:
    4. what is the logic are used for the same because Hall effect sensor is always give us rotor angle.

    Not sure what do you mean this. You may take a look at the lab guide about what hall sensor is supporting by this lab. If it's not the same, you have to add some codes to convert the output of the hall sensor to the rotor angle.

    sagar yadav1 said:
    5.what is the used of Motor Identification.

    Identify the motor parameters like Rs, Ls and Flux.

    sagar yadav1 said:
    What is the difference between instaspin and FAST estimator . Which is better and easy to integrate.

    InstaSPIN-FOC uses the FAST estimator, and includes the other modules like CLARK, SVM for motor control with FOC.

  • 0 in reply to Yanming Luo
    Intellectual 470 points

    Hello Luo,

    Thank you for reply.

    1. what is the need of  MOTOR_ALIGNMENT in Hall effect sensor ?

    Hall effect sensor always give the the Rotor Angel and Position.

    2. What is the algorithm for the same?

    Thank you and Regards,

  • 0 in reply to sagar yadav1
    TI__Guru** 117230 points
    sagar yadav1 said:
    1. what is the need of  MOTOR_ALIGNMENT in Hall effect sensor ?

    It's better to use MOTOR_ALIGNMENT as well, the alignment method sets the rotor to an accurate initial position and enables the motor to start with a full /heavy load.

    sagar yadav1 said:
    2. What is the algorithm for the same?

    What do you mean this?

  • 0 in reply to Yanming Luo
    Intellectual 470 points

    How to do Motor Alignment with Hall effect sensor ?

    Algorithm or Logic for motor alignment .

  • 0 in reply to sagar yadav1
    TI__Guru** 117230 points

    Yes, it's the same as the other control algorithms as mentioned above in Q1. Inject a fixed current on d-axis to force the rotor align to the zero angle position.

  • 0 in reply to Yanming Luo
    Intellectual 470 points

    Hello Luo,

    Thank you for reply.

    Inject a fixed current on d-axis to force the rotor align to the zero angle position.-- Can you elaborate on the same 

    What will happen if I have not done motor alignment with Hall effect sensor .

    The PMSM motor I used it has 4 pole pairs that means I getting 24 state for 1 rotation . Hall effect sensor on power on without Motor rotation give 1 sate that means rotor angel always get.

    still I need to do motor allignment.

    Regards,

    Sagar Yadav

  • 0 in reply to sagar yadav1
    TI__Guru** 117230 points
    sagar yadav1 said:
    Inject a fixed current on d-axis to force the rotor align to the zero angle position.-- Can you elaborate on the same 

    You can find the example code in the lab. Just insert the a current on the d-axis, and set the angle to zero for i-park.

    sagar yadav1 said:
    What will happen if I have not done motor alignment with Hall effect sensor .

    The motor could be wake and shake when startup.

    sagar yadav1 said:
    The PMSM motor I used it has 4 pole pairs that means I getting 24 state for 1 rotation . Hall effect sensor on power on without Motor rotation give 1 sate that means rotor angel always get.

    Correct.

    sagar yadav1 said:
    still I need to do motor allignment.

    Currently, yes in this example ab.