Minimum RPM possible with Instaspin FOC

Mahesh Toraskar

Any information available on minimum stable motor rpm achievable with instaspin FOC solution? I want my PMSM (16 Pole) to run at as low as 50 RPM without any problem.

Thanks

Mahesh

over 9 years ago

0 Rick Duncan over 9 years ago

TI__Guru** 114905 points

Hi Mahesh,

Your post is being moved to the Instaspin forum for better support.

0 ChrisClearman over 9 years ago

TI__Guru** 119340 points

Mahesh,
Lowest possible stable speed depends on the flux of your motor vs. the voltage scaling of your hardware. it's all about bits of resolution on the voltage measurement (having some load for resolution on the current helps as well).

50 RPM with 16 poles = 6.6 Hz
This is pretty low for highly accurate estimates, but many larger Bemf motors will run stable (if not exactly 100% torque/speed accuracy) at this sort of frequency.

0 Mahesh Toraskar over 9 years ago in reply to ChrisClearman

Prodigy 20 points

Thanks a lot!

Regards

Mahesh

C2000™︎ microcontrollers

C2000 microcontrollers forum

Minimum RPM possible with Instaspin FOC