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F2812 and PMSM3_1

KV
Expert 1800 points

Hi,

I am at level 3 of F2812  PMSM 3_1 controller development.  The motor runs with a speedref of 0.005 to 0.02.  I am unable to get the graphs as indicated in the application note.  Is there any way to sort this.  Is it that I need to change the base rpm.  could I know in which file the base rpm is declared.

thx & rgds

KV

  • 0
    Intellectual 970 points

    I dont think this has anything to do with base rpm. In "PM_Sensorless-Settings.h" or equivalent file you will find a declaration of BASE_FREQ which determines base rpm and is used in gain values. Quite interesting that your motor is running at such low speed references as this is where most people have problems.

  • 0 in reply to newtothis
    Expert 1800 points

    Thanks for the info.   I am able to run the motor at such low speed references probably because of higher intertial values of the rotor.

    rgds