Browse Groups

• ## Need to know relation between turns, poles and rpm

(4)
• NextPrevious
• I am trying to do a DIY project of 1KW 3 phase permanent magnet alternator suitable. I think of around 1 feet dia stator with rotors having PMs on its both
Jan 30, 2009 1 of 4
View Source
I am trying to do a DIY project of 1KW 3 phase permanent magnet
alternator suitable. I think of around 1 feet dia stator with rotors
having PMs on its both ends.
I need guidance regarding
1] No. of electrical poles to be maintained on stator
2] Total no. of coils per phase and no. of turns, wire size for each
coil.
3] No. of magnets on rotor wheel

Also can I get mathematical relation between no. of poles, no. of
turns, rpm to the output of alternator.
• 12 magnets on each plate, 9 coils sandwiched in between. We use N50 magnets, 2 x 1 x .5 What voltage are you trying to produce? Steve Spence
Jan 30, 2009 1 of 4
View Source
12 magnets on each plate, 9 coils sandwiched in between. We use N50
magnets, 2" x 1" x .5"

What voltage are you trying to produce?

Steve Spence
http://www.green-trust.org
http://www.buildittogether.info

sanat wrote:
>
>
> I am trying to do a DIY project of 1KW 3 phase permanent magnet
> alternator suitable. I think of around 1 feet dia stator with rotors
> having PMs on its both ends.
> I need guidance regarding
> 1] No. of electrical poles to be maintained on stator
> 2] Total no. of coils per phase and no. of turns, wire size for each
> coil.
> 3] No. of magnets on rotor wheel
>
> Also can I get mathematical relation between no. of poles, no. of
> turns, rpm to the output of alternator.
>
>
• the formula is 1.33 (magnet) x no. of coils ... From: Steve Spence Subject: Re: [axialflux] Need to know relation between turns,
Jan 30, 2009 1 of 4
View Source
 the formula is 1.33 (magnet) x no. of coils --- On Fri, 1/30/09, Steve Spence wrote:From: Steve Spence Subject: Re: [axialflux] Need to know relation between turns, poles and rpmTo: axialflux@yahoogroups.comDate: Friday, January 30, 2009, 7:52 AM 12 magnets on each plate, 9 coils sandwiched in between. We use N50 magnets, 2" x 1" x .5" What voltage are you trying to produce? Steve Spence http://www.green- trust.org http://www.builditt ogether.info sanat wrote: > > > I am trying to do a DIY project of 1KW 3 phase permanent magnet > alternator suitable. I think of around 1 feet dia stator with rotors > having PMs on its both ends. > I need guidance regarding > 1] No. of electrical poles to be maintained on stator > 2] Total no. of coils per phase and no. of turns, wire size for each > coil. > 3] No. of magnets on rotor wheel > > Also can I get mathematical relation between no. of poles, no. of > turns, rpm to the output of alternator. > >

• Can you further explain that with an example? Steve Spence http://www.green-trust.org http://www.buildittogether.info
Jan 31, 2009 1 of 4
View Source
Can you further explain that with an example?

Steve Spence
http://www.green-trust.org
http://www.buildittogether.info

doug duncan wrote:
>
>
> the formula is 1.33 (magnet) x no. of coils
>
> --- On *Fri, 1/30/09, Steve Spence /<sspence@...>/* wrote:
>
> From: Steve Spence <sspence@...>
> Subject: Re: [axialflux] Need to know relation between turns, poles
> and rpm
> To: axialflux@yahoogroups.com
> Date: Friday, January 30, 2009, 7:52 AM
>
> 12 magnets on each plate, 9 coils sandwiched in between. We use N50
> magnets, 2" x 1" x .5"
>
> What voltage are you trying to produce?
>
> Steve Spence
> http://www.green- trust.org <http://www.green-trust.org>
> http://www.builditt ogether.info <http://www.buildittogether.info>
>
> sanat wrote:
> >
> >
> > I am trying to do a DIY project of 1KW 3 phase permanent magnet
> > alternator suitable. I think of around 1 feet dia stator with rotors
> > having PMs on its both ends.
> > I need guidance regarding
> > 1] No. of electrical poles to be maintained on stator
> > 2] Total no. of coils per phase and no. of turns, wire size for each
> > coil.
> > 3] No. of magnets on rotor wheel
> >
> > Also can I get mathematical relation between no. of poles, no. of
> > turns, rpm to the output of alternator.
> >
> >
>
>
>
Your message has been successfully submitted and would be delivered to recipients shortly.
• Changes have not been saved
Press OK to abandon changes or Cancel to continue editing
• Your browser is not supported
Kindly note that Groups does not support 7.0 or earlier versions of Internet Explorer. We recommend upgrading to the latest Internet Explorer, Google Chrome, or Firefox. If you are using IE 9 or later, make sure you turn off Compatibility View.