Rotor magnetic field and stator magnetic field

  • #1
This is one of the big confusions i have. When rotor magnetic field is 90 degrees with respect to stator magnetic field we get maximum torque. In field oriented control the a, b, c axis is converted to d and q axis. So making d axis to 0 and q axis to torque and running through pi loop does automatically the 90 angle differnce? Please help.
 

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  • #2
jim hardy
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In field oriented control the a, b, c axis is converted to d and q axis. So making d axis to 0 and q axis to torque and running through pi loop does automatically the 90 angle differnce?
I dont think i know enough to address that postulate

Have you dug through that TI paper on FOC?

upload_2017-6-26_14-22-21.png
 
  • #4
jim hardy
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Here is a tutorial video from TI

I've not watched it yet. First few minutes look practical.
Well i just watched all 53 minutes of it.

Fabulous presentation . Holds you like a Tom Clancy novel. Took me right back to sophomore year Analog Computing class !


So making d axis to 0 and q axis to torque and running through pi loop does automatically the 90 angle differnce?

See around minutes 13 and 40.
The PI loop just drives measured current to desired amplitude.
 
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