Wind energy to electric energy - Page 2 - Electronic Circuits Projects Diagrams Free

williB · 15th December 2004, 08:10 PM

I dont know why i didnt check the current before , But i just did and the motor puts out a respectable 0.040 to 0.060 A !! Even when turning very slowly..!! and i got it to produce a maximum of 0.91 mA ..
At one speed it was putting out 43 mV and 62mA , with one meter reading voltage the other reading Amps.
granted as it is now I would need 31 devices connected in series to charge a NiCd but i see potential here...
i was wondering if there was any way to rewind the motor to output more voltage.??

williB · 16th December 2004, 04:01 AM

Maybe by using a higher voltage motor could I get more voltage out ou it..??

williB · 16th December 2004, 05:14 AM

Quote:

Originally Posted by Juglenaut

I made one out a box fan with a gear the matched to the hub with 4 DC motors, two series in parallel bank with the other two series and some other stuff to make it happen. I found that if closely matched motors work very good for this. This generator produced about 8 volts at 3 amps with a steady 25 Mph wind, it is also good as a DC fan.

what is a 540 DC motor ?
8 Volts wow , how did you do it??

williB · 16th December 2004, 05:34 AM

Quote:

Originally Posted by Dirtylude

Anybody making a bigger one of these, I saw a 'How it's Made' show on commercial wind generaters and they were using modified car alternators, which are more efficient then a generator. I would think you could get a smaller version out of a motorcycle or scooter for a smaller turbine. It would still have to be much larger than the project one shown in the PDF.

the one in the PDF is small, about 5 inches tip to tip..
my new version is almost 8 inches tip to tip , and almost 8 inches high..
next i am going to try a really large one..maybe using a 5 gallon bucket..
i think the trick is going to be to keep the mass of the airfoil as low as possible..

**Nigel Goodwin** · 16th December 2004, 07:07 AM

Quote:

Originally Posted by williB

what is a 540 DC motor ?
8 Volts wow , how did you do it??

A 540 is a common model makers motor.

The voltage generated depends (obviously) on the type of motor, and the speed you rotate it at. You need to drive the motor quite fast, so gearing up will be essential.

Vaibhav Birit · 16th December 2004, 07:48 AM

I read somewhere that the motor used in a floppy drive has great potential for wind to electricity conversion. Anybody has more info on this.

williB · 16th December 2004, 04:30 PM

Youre right nigel cuz i had checked another motor last night ..
and had a vast inprovement in the output voltage..
spinning it by hand ,somewhat slowly, i was getting two Volts !!
which is plenty for our purpose , and with the torque this thing gives i think it will work fine..

Quote:

I read somewhere that the motor used in a floppy drive has great potential for wind to electricity conversion. Anybody has more info on this.

dont know...

williB · 17th December 2004, 05:20 AM

Check out this site..!!

http://www.otherpower.com/otherpower_experiments.html

bryan1 · 17th December 2004, 10:09 AM

Hey WilliB,
Eh mate that link to otherpower is the best thing since sliced bread as far as I'm concerned. It's good to find a heap of info on remote power systems especially on hydro as I'm looking at ways to produce power from water as I dont call my farm uppsndowns for nothing

Cheers Bryan1

williB · 17th December 2004, 01:06 PM

yeah they show you how to make generators/alternators out of old auto brake rotors..
very cool stuff..!!

chemelec · 17th December 2004, 01:49 PM

Why not just use a Good old Fashioned Bicycle Generator.

It will put out 6 volts at about 500 mA.

williB · 17th December 2004, 04:18 PM

http://www.otherpower.com/trips3.html
this is from the site..

Quote:

It seems were getting a good 100 watts around 10mph, which is quite reasonable for a 10' prop. We probably see about 500 watts or so at 25 mph and maybe 700 at 30 when it starts furling out of the wind. 500 watts in 25 mph is a bit less than we'd hope for from the 10' prop, and I believe it's because the alternator is a bit too powerful for it.

i plan on making a smaller version of this..
except with a savonius design..

bryan1 · 18th December 2004, 11:15 AM

Eh WilliB,
I finally found what I was looking for and that was a full description on building an alternator both for wind and hydro. I found it on Hugh Piggots website and thank you very much again for the link. I'll certainly be posting some pictures once I've built one and have it working on hydro.

Cheers Bryan1

williB · 18th December 2004, 07:48 PM

I'm having a hard time finding a source of magnets..
Didnt old TV's have six or eight really strong magnets in them..?
I just took apart a pc monitor unfortunatly i did not find what i was looking for..
anyone have any sugestions..??

FoxyRick · 18th December 2004, 09:47 PM

The strongest magnets you'll get are in Hard Drives. Beg some really old ones and take them apart. Each will yield 2, sometimes 4, *seriously* strong Neodymium-Iron-Boron (iirc) magnets. Amazing things!

Don't let them snap together, they are brittle. Don't keep them in a stack together, the force can crush the middle ones.

Don't trap your fingers between them. Don't put them either side of your earlobe, as a friend of mine did. It really hurts (funny though if it isn't you!)

FoxyRick.

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15th December 2004, 08:10 PM	(permalink)
williB	I dont know why i didnt check the current before , But i just did and the motor puts out a respectable 0.040 to 0.060 A !! Even when turning very slowly..!! and i got it to produce a maximum of 0.91 mA .. At one speed it was putting out 43 mV and 62mA , with one meter reading voltage the other reading Amps. granted as it is now I would need 31 devices connected in series to charge a NiCd but i see potential here... i was wondering if there was any way to rewind the motor to output more voltage.??

16th December 2004, 04:01 AM	(permalink)
williB	Maybe by using a higher voltage motor could I get more voltage out ou it..??

16th December 2004, 07:48 AM	(permalink)
Vaibhav Birit	I read somewhere that the motor used in a floppy drive has great potential for wind to electricity conversion. Anybody has more info on this. __________________ www.vaibhavbirit.bravehost.com

17th December 2004, 05:20 AM	(permalink)
williB	Check out this site..!! http://www.otherpower.com/otherpower_experiments.html

17th December 2004, 10:09 AM	(permalink)
bryan1	Hey WilliB, Eh mate that link to otherpower is the best thing since sliced bread as far as I'm concerned. It's good to find a heap of info on remote power systems especially on hydro as I'm looking at ways to produce power from water as I dont call my farm uppsndowns for nothing Cheers Bryan1

17th December 2004, 01:06 PM	(permalink)
williB	yeah they show you how to make generators/alternators out of old auto brake rotors.. very cool stuff..!!

17th December 2004, 01:49 PM	(permalink)
chemelec	Why not just use a Good old Fashioned Bicycle Generator. It will put out 6 volts at about 500 mA. __________________ I No Longer accept Private Messages on here. All Emails to me Must Contain the Word \"Electronic\" in the \"Subject Line\" or they go Directly to my Junk Mail Folder. Email me at: chemelec@hotmail.com Website: http://www3.telus.net/chemelec

18th December 2004, 11:15 AM	(permalink)
bryan1	Eh WilliB, I finally found what I was looking for and that was a full description on building an alternator both for wind and hydro. I found it on Hugh Piggots website and thank you very much again for the link. I'll certainly be posting some pictures once I've built one and have it working on hydro. Cheers Bryan1

18th December 2004, 07:48 PM	(permalink)
williB	I'm having a hard time finding a source of magnets.. Didnt old TV's have six or eight really strong magnets in them..? I just took apart a pc monitor unfortunatly i did not find what i was looking for.. anyone have any sugestions..??

18th December 2004, 09:47 PM	(permalink)
FoxyRick	The strongest magnets you'll get are in Hard Drives. Beg some really old ones and take them apart. Each will yield 2, sometimes 4, seriously strong Neodymium-Iron-Boron (iirc) magnets. Amazing things! Don't let them snap together, they are brittle. Don't keep them in a stack together, the force can crush the middle ones. Don't trap your fingers between them. Don't put them either side of your earlobe, as a friend of mine did. It really hurts (funny though if it isn't you!) FoxyRick.