TIDM-02010: Motor running problem with esmo

Mohana Lakshmi Jayaramu

Part Number: TIDM-02010

We are testing 1kW prototype board using tidm-02010, we are able to test a 1kW motor successfully using FAST algorithm. But, while running the same motor with eSMO the motor starts rotating with a cranky noise. Is there any thing that needs to be importantly changed in esmo. We are changing the motor parameters.

also we have designed our prototype for a 250W motor to run in esmo, we are providing input to 1kW motor from that terminal. Are we going wrong there?

Want to understand more on this.
Kindly revert

over 3 years ago

0 Yanming Luo over 3 years ago

TI__Guru** 116860 points

There are a few parameters as below that are needed to tune according to the motor through many trial runs. It's difficult to give a specific value according to the motor. You may try to tune these parameter per the testing state.

#define USER_MOTOR1_ALIGN_CURRENT_A (1.0f)
#define USER_MOTOR1_STARTUP_CURRENT_A (1.0f)

#define USER_MOTOR1_SPEED_START_Hz (10.0f)

// Only for eSMO
#define USER_MOTOR1_KSLIDE_MAX (1.50f)
#define USER_MOTOR1_KSLIDE_MIN (0.75f)

#define USER_MOTOR1_PLL_KP_MAX (10.0f)
#define USER_MOTOR1_PLL_KP_MIN (2.0f)
#define USER_MOTOR1_PLL_KP_SF (5.0f)

#define USER_MOTOR1_BEMF_THRESHOLD (0.5f)
#define USER_MOTOR1_BEMF_KSLF_FC_Hz (2.0f)
#define USER_MOTOR1_THETA_OFFSET_SF (1.0f)
#define USER_MOTOR1_SPEED_LPF_FC_Hz (200.0f)

BTW, it's better to implement the FAST for motor control if the ADC channels are enough for your application, the FAST should be easily to tune and run a motor in a short time.

0 Mohana Lakshmi Jayaramu over 3 years ago in reply to Yanming Luo

Prodigy 230 points

Hi Luo,

Thanks for the quick response. Will try tuning the parameter. The ADC channels are not enough as we are also implementing temperature sensing for both motors, We have used FAST for compressor motor and eSMO for FAN motor.