Small 3 phase AC motor?

 Anyone know of a small 3 phase AC motor? Maybe 12V? For
experimentation with controller algorithms? Maybe a way to rewind a
universal motor? (except how do you convert the commutator to slip
rings?)

 

   A little better explanation of exactly what you want to accomplish will
probably lead to a more useful answer, but for now you need to be looking into
stepper motors and servo motors.  There are also chips out there specifically
designed to drive those motors.  Once you have a better idea what you are
looking for, check out some of the surplus houses such as Marlin P. Jones
http://www.mpja.com/   .

Vaughn

 Lets say I want to make a 3 phase variable speed drive. Most of these
motors are 6+ HP and use 240V and cost a couple hundred bux and you'll
get killed or go broke while trying to get your software controlled
speed control debugged. Now if I could put the shrink ray on that bad
boy and take him down to 12V all around, I wouldnt be afraid to hook
an avr and three half bridges to it and start programming. Compri?

 wrote:


Make one from an automotive alternator - it is a 3 phase motor inside,
with electromagnet core instead of being an induction motor.

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<clare at snyder dot ontario dot canada> wrote in message

Bingo.  Let's see, you'd probably have to eliminate the diodes that keep it
from draining the battery when it's not charging...