Low noise AC motor driver with InstaSPIN...

Hi user4267172,

I'm still a beginner when it comes to motor controls, but from my own experiences, using an appropriate value for USER_PWM_FREQ_kHz, and tuning the motor nicely (Kp, Ki, spd_Kp & spd_Ki or bandwidth) do provide a rather 'calm' motor performance. I don't think there is a single variable or function that can directly monitor and alter the noise output, since there are many factors as to why a motor makes loud noises. Hope this helps :)

Thank you for your comment...

I saw some commercial AC inverter models that have loud noise and could not reduce that noise just with increasing the switching frequency of IGBT power module. (Even with famous maker of AC driver)

So, I want to ask to Ti if InstaSPIN can achieve (highly) low noise state at motor driving anyway.

If reducing the noise is possible with InstaSPIN, I can be so happy with Picolo~

If not, I should do some more study to solve that issue. (Without InstaSPIN)

We need experienced Ti's comment for that anyway... ^^

"low noise" if affected by many factors: PWM frequency, current control rate / tuning, speed control tuning, etc. It's part of the overall system.

In general, FOC with appropriate switching and control frequency will bring very low noise, high performance to a drive.

Thank you for your comment...^^

Now, my homework is just studying hard TI's Picolo & InstaSPIN and to make successful commercial motor driver~