• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 1 answer
  • Subscribers 31 subscribers
  • Views 281 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DRV8353RS-EVM: DRV8353S and F280049C

Jan Huijser
Prodigy 190 points
Part Number: DRV8353RS-EVM
Other Parts Discussed in Thread: LAUNCHXL-F280049C, MOTORWARE

DRV8353S and F280049C

We are trying to run a motor with the DV8353-EVM board and the LaunchXL-F280049C processor board. Because we are want finally to use a 64 the pins version of this processor we changed ADC inputs and PWM outputs. The problem now is that the current controllers not function, resulting in large currents and over-current protection faults.

By limiting the output voltage of the current controllers to about 0.5V I was able to to some measurements without over current problems. With this low output voltage the motor current is limited to about 10A.

It seems this current is measured as Id and almost no Iq. Because Id should be 0, the current controller tries to reach this by increasing the output voltage, resulting in even more current.

We have already checked all the PWM outputs and voltage and current inputs bus seems to be OK.

Do you have a suggestion what is going wrong?

  • 0
    TI__Mastermind 23045 points

    Hello Jan,

    The team is out of the office due to Thanksgiving holiday here in the US. We will be back in office on Nov 29th, thank you for your patience and understanding.

    Best,

    Isaac

  • 0 in reply to Isaac Lara
    TI__Mastermind 23045 points

    Hello Jan,

    Thanks you for your patience. Not sure what the problem could be here, could you verify how you verified the voltage and current inputs to the MCU were working appropriately? My main concern are the values are off perhaps due to some other settings and this is causing an offset to your measurements leading to the faults you are seeing on your end.

    Best,

    Isaac

  • 0
    TI__Mastermind 26046 points

    Hi Jan,

    You may need to recalculate your ADC full scale current settings. Are you using MotorWARE or MotorControl SDK? I can forward to the C2000 for further help on this if you are using an SDK for the LAUNCHXL-F280049C. Please let us know if further assistance is needed.

    Thanks,
    Aaron