BLDC and AC servos are not the same. The difference is subtle, and they could be interchanged for one another, but would not result in optimal operation. the difference is the shape of the back EMF voltage they generate. The AC motor will tend to generate a more sine like EMF, and the DC motor will tend to generate a more square, or trapezoid like shape.
This guy from MIT has a lot of good info he has written on the subject http://scolton.blogspot.com/ Specifically this paper here. http://web.mit.edu/scolton/www/3phduo.pdf Brian On Tue, Nov 9, 2010 at 1:16 PM, Andy Pugh <a...@andypugh.fsnet.co.uk> wrote: > On 9 November 2010 17:25, Brian <turbo94must...@gmail.com> wrote: >> >> If you use PWM, doesn't that make it an AC motor? > > It's fuzzy. BLDC motors are also known as AC servo motors. > To further muddy the waters, one potential use of the generalised BLDC > component would be old-school VFD or new-fangled flux-vector drive of > induction motors (if they have encoders). > > -- > atp > > ------------------------------------------------------------------------------ > The Next 800 Companies to Lead America's Growth: New Video Whitepaper > David G. Thomson, author of the best-selling book "Blueprint to a > Billion" shares his insights and actions to help propel your > business during the next growth cycle. Listen Now! > http://p.sf.net/sfu/SAP-dev2dev > _______________________________________________ > Emc-developers mailing list > Emc-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-developers > ------------------------------------------------------------------------------ The Next 800 Companies to Lead America's Growth: New Video Whitepaper David G. Thomson, author of the best-selling book "Blueprint to a Billion" shares his insights and actions to help propel your business during the next growth cycle. Listen Now! http://p.sf.net/sfu/SAP-dev2dev _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
