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TMS320F28069F: Motor specifications for the InstaSPIN

SY Yoon
Genius 3381 points
Part Number: TMS320F28069F


Hi, 

I remember that TI introduced InstaSPIN as an easy-to-use solution that can start spinning just by connecting a motor when it was released.

And the InstaSPIN solution supports motor identification.

But not all motors were spinning. 

Motor specifications are required to select the appropriate EVM for the motor.

What are the minimum motor specifications I need to know for InstaSPIN demo?

  • 0
    TI__Guru** 116090 points
    SY Yoon said:
    What are the minimum motor specifications I need to know for InstaSPIN demo?

    If you want to identify the motor, you need to set the right identification variables value in the file of user.h according to the specification of the motor, to make sure the motor spin smoothly during Flux measurement and Ls identification states. So you need to know the rated current, frequency, and voltage of the motor. 

    #define USER_MOTOR_RES_EST_CURRENT     (2.0)                               // A - 10-30% of rated current of the motor

    #define USER_MOTOR_IND_EST_CURRENT     (-1.5)                             // A - 10-30% of rated current of the motor, just enough to enable rotation

    #define USER_MOTOR_MAX_CURRENT           (20.0)                               // A - 30~150% of rated current of the motor

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

    If you want run the motor directly, you need to know the Rs, Ls and Flux, and set the parameters in user.h. You may refer to the user's guide to set these parameters according to the datasheet of the motor.

    Take a look at section 6.9 "Setting PMSM Motor Parameters in user.h" or "4.8 Setting ACIM Motor Parameters in user.h" of  InstaSPIN-FOC and InstaSPIN-MOTION User's Guide ( https://www.ti.com/lit/spruhj1)