Yep,

         That exactly how it's wired.
         Someone suggested placing magnets in the rotor thus making it a
permanent magnet rotor.  Anyone ever do that before?  I've got a really
nice machine shop at my disposal.  Could machine slots in the rotor and
epoxy magnets in there.  The rotor is roughly 3.6" dia. x 2.5" long.  Does
anyone have guidance on what type of magnets, what size of magnets, where
to get them, how to install/glue them in, ...
         Is there a way to figure out what strength of magnets to use to
get a specific V vs rpm?  I guess I'm looking for something like 15V output
at ~200rpm.

PS:  Just as review, this is a 3/4 hp 3 phase, 230/460V AC, 1140rpm motor
that I'd like to use as a generator (probably on a windmill).  Trying to
figure out how to convert it over.

Thanks,

Gary


At 07:45 PM 11/25/2002 -0600, you wrote:
>Are the leads from the motors Numbered 1 to 9?  If so you there are 6
>coils inside the motor.  3 coils are wired in a Y  with numbers 7-8-9
>the ends. 1&4, 2&5, 3&6 are the 2 ends of the other 3 coils.  for 3
>phase operation at 460 volt you put 3 sets of 2 coils each in series,
>Hence put the 3 power wires to 1,2&3. connect 4&7 and insulate, 5&8 and
>insulate And 6&9 and insulate.  for 230 volt operation connect 4,5&6 and
>insulate, connect the 3 power leads to 1&7, 2&8 and 3&9.
>So  why not try putting a voltage across 1&4, 2&5, and 3&6 Then see
>what you get for voltage out of 7, 8 & 9.  My master electrician friend
>says it can be done but you are going to have a devil of a time
>regulating the output.  Also when it get enough voltage in it it will
>be self exciting.
>
>Let me know what happens.
>
>Bob
>
>William Chops Westfield wrote:
>
>>    no one has explained yet why I can light up LEDs just by connecting
>>    them to the leads and spinning the shaft = energy out.  Any takers on
>>    an explanation?
>>
>>Perhaps it contains a small permanant magnet somewhere to aid in
>>starting or something?  I can light LEDs with itty-bitty stepper
>>motors from old printers; a largish motor ought to make them explode,
>>if it were based on similar technology :-)
>>
>>BillW
>>
>>--
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>>
>>
>>
>
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>

Gary Neal
Research Assistant - Drivetrain Technology Center
Applied Research Laboratory - Penn State University
PO Box 30
Research Building West
North Atherton Street
State College, PA 16801
814-863-5468 (phone)
814-863-6185 (fax)

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