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CCS/BOOSTXL-DRV8301: Motor Identification

Maria MJ
Intellectual 340 points
Part Number: BOOSTXL-DRV8301
Other Parts Discussed in Thread: MOTORWARE

Tool/software: Code Composer Studio

Hi again :) , 

Reading about InstaSPIN-FOC on TI website it says, 

Motor identification

  • No datasheet required
  • One time parameter identification based on simple motor nameplate data (max voltage, current)

But in instaspin_labs guide only these values should  be identified 

USER_MOTOR_MAX_CURRENT
USER_MOTOR_RES_EST_CURRENT USER_MOTOR_IND_EST_CURRENT 

where should we modify the max voltage ? 

And should we have power supply to the motor the same as the nameplate (max) Voltage ? As the Current may deviate from the nameplate amperes if the voltage turns out to be lower than indicated. I'm a bit confused with these two points. 

One more thing Why are there additional modifications only stated in qsg_gui_universal ? slide 25/55 (//! \brief CURRENTS AND VOLTAGES )

Thanks 

  • 0
    TI__Guru** 115510 points

    Not need the specific datasheet about motor parameters, but you'd better know the rated current of the motor to set the identification variables as you mentioned above.

    Download motorware which has many example projects to support this kit, and follow the lab guide to understand these lab projects.

    http://www.ti.com/tool/motorware

     

  • 0 in reply to Yanming Luo
    Intellectual 340 points

    Hi Yanming, 

    Thanks for your fast reply. 

    Yes, I am already working with motorware, reading the lab guides and working with them, if you read carefully my question I am   confused between what is written in the labs guide for the motorware labs and the qsg of gui universal .. about the modifications in user.h. 

    Please have a look on my question again. 

    Thank you. :) 

  • 0 in reply to Maria MJ
    TI__Guru** 115510 points

    You don't need to change anything except motor parameters if you are using TI EVM kits. You just need to follow the lab guide to change the identification variables based on the motor.

    USER_MOTOR_MAX_CURRENT

    USER_MOTOR_RES_EST_CURRENT

    USER_MOTOR_IND_EST_CURRENT 

    USER_MOTOR_FLUX_EST_FREQ_Hz

    You may change adjust the output voltage of the dc power supply for the kit according to the spec. of the motor, but you don't need to change any parameters for it.

    BTW, you need to follow the GUI guide to rebuild the MotorWare project (the binary files)  using CCS first, and rename the file to appProgram.out and copy it to the appropriate webapp folder.