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2008 summer progress.


By margusten, Section Diaries
Posted on Fri Aug 29th, 2008 at 01:18:50 PM MST
3 phase low current PMG.

Greetings from Estonia.

This story is about making something usable from scrap.

First I made magnet rotors from old microwaves and used car disc brakes.
More than 12 microwawes needed because all magnets are not same size.



Second - I made 3 phase stator from used magnet wire. That's why all windings isn't same size (old lacquer issue). 0.6 mm wire diametre and 400 w every winding. This must give out HIGH voltage. But not, because microwawe magnets are quite weak.



This combination of almost 3 kg. free copper has complete circuit. Definetely not optimal. That's why I left all wire ends outside for future possibilities.



No need to make new mold.



Here it goes.



Next day it looks like this:





One good friend helped me with weldings. I am not so good on it.



Here it is on test stand. Of couse it's working. Only with one rotor I measured 50V maximum speed (900rpm) cordless drill and 80V two rotors connected open circuit. Cordless drill was too weak for measuring shorted circuit current, more than 1A seen.

On last picture You can see new polar mount stand on my basement roof. Temporary satellite dish installed on it for perfect aligning. In future solar panels or solar consentrator will sit on it.
But it was good for watching unusual satellites too. 90E YAMAL is most east satellite we can see. Pitch angle 1 degree, almost parallel to earth surfice. I was able to see Russian channels from Vladivastok - time difference 8 houres. Always first morning news on this channel when I went to bed.

BR,

Margus

2008 summer progress. | 10 comments (10 topical, 0 editorial)

Re: 2008 summer progress. (3.00 / 0) (#1)
by tecker on Fri Aug 29th, 2008 at 08:00:58 AM MST
(User Info)

 A few have used doughnut magnets .It's very cool to get power from used stuff like that . It's hard to get the wire off clean and have the insulation good . I've been able to use polyurethane with some success . You can increase your  power by adding a neo in the hole the same polarity as the doughnut face . An oposite pole is present in the hole that messes with the peak charge times . Those look like between 12 and 19 mm either will do with some super glue and epoxie .



Re: 2008 summer progress. (3.00 / 0) (#2)
by tecker on Fri Aug 29th, 2008 at 08:03:28 AM MST
(User Info)

I see you can add another magnet rotor as you get more materials that will increase the ouput also .

[ Parent ]


Re: 2008 summer progress. (3.00 / 0) (#3)
by gotwind2 (ben[at]gotwind.org) on Fri Aug 29th, 2008 at 12:57:24 PM MST
(User Info) http://www.gotwind.org/index.htm

Great work margusten.

Cosidering the re-use of scrap materials, maybe you could use computer hard drive Neodymium magnets for your next attempt, as MickS did in Australia, story below.
http://www.fieldlines.com/story/2006/10/8/112046/572

Ben.

www.gotwind.org


[ Parent ]


Re: 2008 summer progress. (3.00 / 0) (#4)
by margusten (margusten.ee@mail.ee) on Fri Aug 29th, 2008 at 02:18:04 PM MST
(User Info) http://www.geocities.com/ResearchTriangle/Thinktank/1780

Hi,

I have more than 100 used computer hard discs waiting for disassemling and making next generator. It means more trouble than disassembling 12 microwawe owens.
Read my older diary about single phase machine using wery old computer scasi drive magnets. Definately Neodynamium magnets are much better, I noticed it when I was not able to separate this double rotor machine without tools.
This microwawe maget machine is double rotor machine too. Only pictures here taken from early stadium.
I was able to separate second magnet rotor from machine by two hands. Of course stator thichness was same, same mold used.

I had same idea to make weak microwawe magnets stronger by adding additional neodynamium magnets to ferrite magnet hole.
But I read from this forum that Neodynamium magnet can kill Ferrite magnet soon.
And I was afraid and let holes empty.
Is it true?

I hope to add some more pictures soon.

BR,

Margus

[ Parent ]



Re: 2008 summer progress. (3.00 / 0) (#6)
by tecker on Fri Aug 29th, 2008 at 04:28:05 PM MST
(User Info)

It won't be a problem you have to surround the magnet for a weakening you reallydon't need much just hide that pole in the middle maybe a harddrive mag or a piece of one on a 12mm ferrite button or cut washers.

[ Parent ]


Re: 2008 summer progress. (3.00 / 0) (#5)
by Stonebrain on Fri Aug 29th, 2008 at 02:59:46 PM MST
(User Info)

Hey margussen,
Did you know wead is growing on the roof of your basement?Or is it normal?
Or do you live under the ground like rabbits do?

just kidding.

Very cool what you make of scrap.Good idea to boost the microwaveferrits with harddiskneo's.
I think that if you put them the right way(the field of the neo's reinforcing the field of the ferrits) it won't kill the ferrits.The otherway around the neos maybe kill the ferrits,but then you would have to force the neos in the ferrits.

Well,that's what I guess.Better do some tests.

Could be the most powerfull magrotor from scrap ever build!!

cheers,
stonebrain



Re: 2008 summer progress. (3.00 / 0) (#7)
by blueyonder (windwoodgood at yahoo dot co dot uk) on Sun Aug 31st, 2008 at 05:28:40 AM MST
(User Info)

  hello margus. i see your very clever.
  i heard about using micro wave parts to make a wind gen
  but i never had a old microwave to take to bits to see what useful stuff was inside

   so now i know how i can build a wind gen using all scrap bits.
  you must have put a lot of time and energy into your project.
  and you used a brake disc as well.
  its a shame the neo magnets are so expensive.

   but now your playing with hard drive mags . so i will watch in the future
 for a rebuilt wind gen  with hard drive mags.

   you have done sum great work. thank you for sharing.
its a ill wind that dos no good



Re: 2008 summer progress. (3.00 / 0) (#8)
by Capt Slog (Capt.Slog(at this)gmail.com) on Sun Aug 31st, 2008 at 11:37:01 AM MST
(User Info)

Nice work Margus.  

I don't know if you've seen this but I thought you might like it....

http://www.windstuffnow.com/main/microwave_wind_generator.htm

I think it would be well worth your time making a second rotor to face the one you already have.

.
"Slowly changing the world, one watt at a time!"



Re: 2008 summer progress. (3.00 / 0) (#9)
by margusten (margusten.ee@mail.ee) on Mon Sep 1st, 2008 at 06:48:42 AM MST
(User Info) http://www.geocities.com/ResearchTriangle/Thinktank/1780

Thanks for all comments!

I didn't understand really how is safe way to add neodynamium magnets.
Fill the hole in ferrite magnet with pieces of hard disc magnets in same polarity?



Aniway it working little bit better than sawblade windmill, now down in grass.
This sawblade mill had high rpm. up to 2000 in storm conditions but it killed finally a bearing holder. Less than 2 Years uptime.



Some upgrade for new generator.





But with double rotor it was too heavy and I decided to cut down from 8 meters to 6.
Now it raises easily. New pictures not taken yet.



Margus


[ Parent ]



Re: 2008 summer progress. (3.00 / 0) (#10)
by spinningmagnets (velmis1450bc(at)aol(dot)com) on Mon Sep 1st, 2008 at 07:20:31 AM MST
(User Info)

Margus, I have read if you don't have enough magnets for two magnet rotors, it is still good to have the second spinning steel rotor as a magnetic flux path. Keep up the good work!



2008 summer progress. | 10 comments (10 topical, 0 editorial)
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