Other Parts Discussed in Thread: TIDA-01353, TIDA-00472
Hello,
We are using TIDA-01353 eval board to run a BLDC motor. However, the source code is not available for this design on TI website.(http://www.ti.com/tool/TIDA-01353
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Hello,
We are using TIDA-01353 eval board to run a BLDC motor. However, the source code is not available for this design on TI website.(http://www.ti.com/tool/TIDA-01353
Thanks for your response! We have got the motor spinning now. The only problem left is at start-up when we need the maximum torque at full load and motor is struggling to start up and needs to be helped. Any idea how to increase the starting torque for the motor? Appreciate your urgent response.
Hi,
I am glad to hear you got the motor spinning! For the startup torque, have you tried adjusting the START_UP_DUTY percentage or START_UP_MAX_DUTY percentage values. An increase in these duty cycle values for start up should allow for more startup torque with your motor.
We tried to play with those two variables but no success; The motor is still struggling at start up making so much noise. Any suggestions?
What is your particular motor rated for with respect to voltage, current, etc.?
Hi,
With these values you have provided, it appears you are exceeding the limits of the design (assuming your design is similar to TIDA-01353). This design was rated for only 375W, so with 8.9A current requirement, you will not have enough torque to get the motor to spin on startup. If your current capacity is larger, I would suggest modifying the design according to your specific requirements. I hope this helps!
- Brian
the data provided is the rating values for the motor. We are not running the motor at full load. the maximum load we put on the motor is less than 200W
The start up torque of the motor will be higher than the torque value once the motor is running. You said you have to hand-spin the motor to get it going; this leads me to believe the board does not have sufficient current capacity to overcome the required startup torque.
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