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Hidamen

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Joined: 24/02/2011
Location: Brazil
Posts: 9

Posted: 02:02pm 24 Feb 2011

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Hello All,

I've to create a single phase stator for a specific application to convert power.

I've some questions and and i'll like to ask for some help of you guys if possible.

I'll describe my doubts but those are also on the image below to help visualize the doubts.

On the first square.

The best way to wire the stator coils on a single phase mode is A)Wire 2 coils in series totalizing 4 pairs or B)Wire the 8 cores in series one after the other !?!?

The second square

The correct way to define the magnet poles for the rotors (in single phase) is A)Reversing the poles N/S or B)All poles are pointing the same direction ?!

The third square

Since the stator will be in the middle of two rotors the correct way to assemble the rotors on it are A)Reversing the poles N/S on the rotor 1 and also inversing the rotor 2 poles to stand against the rotor 1 or B)Inverse the magnet poles all N on rotor 1 all S on rotor 2 !?!?

I'll like to ask as well the correct number of magnets on each rotor for each coil !?

Really Thanks All

Tinker

Guru

Joined: 07/11/2007
Location: Australia
Posts: 1904

Posted: 02:20pm 24 Feb 2011

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Is this a school asignment question?

look at the info on the home page for this site, single phase is covered among the basic Alternator pages.
Also read up on how AC is generated when a coil cuts a magnetic field and you'll be able to answer all your questions yourself

Klaus

Hidamen

Newbie

Joined: 24/02/2011
Location: Brazil
Posts: 9

Posted: 09:42pm 25 Feb 2011

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Hello Tinker/All,

As suggested i took more education on the subject and came with another design.

Please if you've any suggestion to improve it or saw anything wrong please comment.

Thanks

niall1

Senior Member

Joined: 20/11/2008
Location: Ireland
Posts: 331

Posted: 10:09pm 25 Feb 2011

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hi Hidamen

have a look at this thread on fieldlines...theres two diagrams at the bottom which show a conventional single phase

http://fieldlines.com/board/index.php/topic,144341.0.html

theres other formats to do single phase (i think) but the above layout shows it very well..... Edited by niall1 2011-02-27

niall

niall1

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Joined: 20/11/2008
Location: Ireland
Posts: 331

Posted: 10:18pm 25 Feb 2011

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trying to get the click link to work....single phase

niall

Hidamen

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Joined: 24/02/2011
Location: Brazil
Posts: 9

Posted: 10:32pm 25 Feb 2011

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Niall1,

I see that in order to produce power it must be like phase in/phase out, like all magnets passing on the coils and after it out the coils.

Im worried if the magnets on my plan are on the correct position, i mean one rotor is totally north and the other totally south.

The design is also illustrative, i'll find magnets that can fully cover the coils

Im missing something !?

Thanks

niall1

Senior Member

Joined: 20/11/2008
Location: Ireland
Posts: 331

Posted: 11:05pm 25 Feb 2011

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yes ..the mags should be n/s/n/s on each rotor....the rotors will attract each other as the n/s pattern on one rotor will be directly opposite the s/n pattern on the other

if you imagine the the rotors rotating , a coil will be experiencing a pair of n/s mags passing over it and then a pair of s/n

the upper and lower parts of the coil dont really do anything as its the wire that is perpendicular (or cut) by the magnets that is causing a current to flow....

this is a 3 phase model but ignore that aspect of it for a second...

concentrate on looking at one color (single phase)....its the same thing....but not with alcohol intake....

model Edited by niall1 2011-02-27

niall

Hidamen

Newbie

Joined: 24/02/2011
Location: Brazil
Posts: 9

Posted: 11:17pm 25 Feb 2011

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Thanks Nidall1,

I'll create another model and post in a few time.

Now i got it :)

But i got a new question !?!? There's any math regarding the amount of wire of the coil vs the voltage/current that it produces !?

Thanks

Hidamen

Newbie

Joined: 24/02/2011
Location: Brazil
Posts: 9

Posted: 11:39pm 25 Feb 2011

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Hi,

I think that it's correct now :)

Thanks

niall1

Senior Member

Joined: 20/11/2008
Location: Ireland
Posts: 331

Posted: 11:39pm 25 Feb 2011

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mmm...lots of unknowns there .....thats territory for other other forum members...

there are published designs (books) that cover all the numbers for you

Hugh Piggot and the Otherpower books are available ...that,d save you money and frustration in the long run

i,d really recommend getting Hughs ...i,m sure Otherpowers is just as good

but its good to try to think about things first as well ...makes it more fun

sorry this reply overlapped your last post...

i,d be inclined to stick as close as is reasonable to the animation , (proportions)

Edited by niall1 2011-02-27

niall

brucedownunder2
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Joined: 14/09/2005
Location: Australia
Posts: 1548

Posted: 11:41pm 25 Feb 2011

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Hi Hidamen,,

sou brasileira minha familia mora em Uberaba e eu moro na Australia. Meu marido tem um windmil, e esta sempre neste site, talking to people about this. WHERE in brasil are you?

(Ilda says hello to our first Brasilian windgennie member )

Have a nice day,

ILDA E BRUCE

Bushboy

Hidamen

Newbie

Joined: 24/02/2011
Location: Brazil
Posts: 9

Posted: 11:50pm 25 Feb 2011

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Hi Ilda/Bruce,

Estou em campinas são paulo :)

I wasn't expecting find a Brazuca around hehehehe nice to meet you

Niall

Thanks for the help i'll see if i can find this book, i just got one about magnets but it's just one side of the conversor, i need both :)

Thanks AllEdited by Hidamen 2011-02-27

niall1

Senior Member

Joined: 20/11/2008
Location: Ireland
Posts: 331

Posted: 12:01am 26 Feb 2011

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i see Hugh has a Spanish version of his book ....but is that Portuguese ?...

niall

Hidamen

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Joined: 24/02/2011
Location: Brazil
Posts: 9

Posted: 12:08am 26 Feb 2011

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Niall1,

Yes it's Brazilian Portuguese (Portugal speak Portuguese as well but they got their own version :P)

I can handle English NP there

Thanks

Hidamen

Newbie

Joined: 24/02/2011
Location: Brazil
Posts: 9

Posted: 12:58am 26 Feb 2011

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Hi All,

It's a interesting thing :)

We can assemble the coils in parallel or in series, in series it produces more wattage, in parallel more Amperage...

Also there's another item to consider, not just the amount of wire on the coils, but the speed that the engine will run ..

I imagine that there must be a equation to each factor in order to reach the best performance ...

I've found this one from Windgenkits (http://www.windgenkits.com/faq.htm) but i wonder if the math regarding the coil wiring could be more specific

Thanks

niall1

Senior Member

Joined: 20/11/2008
Location: Ireland
Posts: 331

Posted: 01:42am 26 Feb 2011

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erm....Hidamen

earlier i said ...

"a coil will be experiencing a pair of n/s mags passing over it and then a pair of s/n"

in a single rotor design its easier for me to get my head around it like that ...but with dual rotors its a bad description

the magnet pole layout will still be the the same...but its better to think about it in terms of the magnetic circuit alternating through the coils....

Edited by niall1 2011-02-27

niall

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