Hi Michael,
As you remember from your readings about PMAC motors, "PMAC motors are driven with closed-loop sinusoidal current control. Maximum performance and efficiency is obtained with field-oriented control. Field orientation requires rotor position information, either handled by position sensors (Hall-effect or shaft encoder) or position estimate from winding voltage (from zero-crossing of unused winding)."
Since the two motors would inevitably fall out of synch (assuming one could get them in synch to begin with), they will need seperate controllers.
Fair winds,
Eric
Marina del Rey, CA
--- In electricboats@yahoogroups.com, Michael Mccomb <mccomb.michael@...> wrote:
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> i am more and more wanting to take a shot at doing this all myself with two or three of the ME0913 motors... looks fairly straight forward.... pulleys, drive belts, bearings, shaft, frame to support it all.... when i think of possibly three motors i have to wonder about a double sided drive belt, i have no idea of the appropriate terminology but a sort of... M configuration for the three motors with the powered shaft directly below the M... motors in parallel??? or i perhaps not but I must learn more as i am out of my depth at the moment.... do you know, does a motor such as a ME0913 require an individual controller due to some sort of frequency feedback that the motor must supply?
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