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Overunity Machines Forum



AC Permenent Magnet Motor

Started by gotoluc, April 12, 2009, 04:41:35 PM

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jadaro2600

#5
April 13, 2009, 03:04:15 AM
AC is indeed different from square waves.

I assume he has the coils setup to oppose one another? ..to pulse in opposite directions as the rotor spins?

wings

#6
April 13, 2009, 04:34:18 AM
it seem a synchronous motor with air coil

http://en.wikipedia.org/wiki/Synchronous_motor

Michelinho

#7
April 13, 2009, 04:37:09 AM
Hi gotoluc,

Interesting video and I did something similar with my Newman motor V 1.0 driving it with my signal generator using square and sine waves last year. I did not have a ammeter connected so it went by as an interesting experiment.
I think that as you increase the load, the magnets does not create as strong a CEMF and the load diminish. Same as when you load the generator with the light but the speed drops faster and the rotor bucks to a stall. Same problem as you increase speed the CEMF makes the rotor lose sync.

Thanks for lighting one more cell in my poor brain.

Keep up the good work.

Michel

gotoluc

#8
April 13, 2009, 12:09:02 PM
Quote from: jadaro2600 on April 13, 2009, 03:04:15 AM
AC is indeed different from square waves.

I assume he has the coils setup to oppose one another? ..to pulse in opposite directions as the rotor spins?


Hi jadaro2600,

thanks for looking at this topic :) Can you explain more on your statement "AC is indeed different from square waves" because my understanding AC is square wave, triangle wave or sine wave. If a wave form is alternating polarities at every pulse I though this was AC. I would not want to make a mistake and I'm open to learning.

The coils are not setup to oppose one another. They are both in the same direction and connected in series in the 2 last tests of the video.

Luc

broli

#9
April 13, 2009, 12:46:25 PM
This is very interesting indeed.

I think the key to this motor is tuning it to the load like you said. When you load it you have to make sure the load does not have a bigger torque than your motor. If you can fine tune the load just where it almost equals your motor torque I then believe this spot will give you the lowest input current and highest efficiency results. Loading the motor any more will bring it to a halt like you have seen.

Also how does the motor do on higher frequencies than you just have shown?
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