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C2000WARE-MOTORCONTROL-SDK: How to enter motor parameters when using a delta connected motor.

Yuanzhe Ren
Prodigy 50 points
Part Number: C2000WARE-MOTORCONTROL-SDK

Hi all:
I am using universal motor control lab and there is a procedure of setting motor parameters.

My motor is delta connected. The line to line resistance and inductance are 0.8ohm and 1.2mH respectively. How should I enter the parameters.

Besides, when testing motor identification function, the flux dose not become a stable value after the identification is finished. How to fix this?

Thanks  

  • 0
    TI__Guru** 110660 points

    You may try to divide the Rs and Ls value in datasheet by 2 for setting the parameters that depends what value is in datasheet, line to line, or line to neutral. So it's better to run the lab to identify the motor parameters directly, and copy the identified motor parameters to the user heard files that don't need to care what winding type of the motor. You may copy and save the identified Flux value when the motorVars_M1.estState = EST_STATE_LS.

    You may try to tune the identification variables in the user header file according to the motor.  And don't add any load on the motor to ensure it runs smoothly during motor parameters identification process with the lab.

    #define USER_MOTOR1_RES_EST_CURRENT      (1.5)                               // A -  10-30% of rated current of the motor

    #define USER_MOTOR1_IND_EST_CURRENT      (-1.0)                             // A -  10-30% of rated current of the motor,  just enough to enable rotation

    #define USER_MOTOR1_MAX_CURRENT            (5.0)                               // A -  30~150%  of rated current of the motor

    #define USER_MOTOR1_FLUX_EST_FREQ_Hz     (40.0)                            // Hz - 10~30% rated frequency of the motor