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Forum Index : Windmills : questions regarding generator

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Mickus
Newbie

Joined: 14/11/2011
Location: Australia
Posts: 17
Posted: 09:40am 18 Nov 2011
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This will be my fist foray into wind energy. Im starting off very small and looking at generating enough power to run some LED lights in the kids cubby house.

Unfortunately I have no experience in electronics and I am struggling to wrap my head around volts,current,amps RPM.

I have seen from some posts that Ebay can give more problems than its worth due to mislabelling and incorrect info for beginners.

I will be making a system that has no batteries and no electronics as such, meaning no wind no light, this is only for my first system and while I continue to learn.

I have seen some info on a 12v 300prm, that is stated to be able to produce 5w.
As I have no idea of what it all means, I have based my decision on a slower RPM as most posts state that wind catn spin blades at 1200prm, unless in a cyclone.

Any feed back appreciated.

Can anyone recommend a website that is good for beginners to learn about electricity that may possible link into wind energy or solar
 
Racingken

Newbie

Joined: 24/11/2011
Location: United States
Posts: 28
Posted: 05:33pm 25 Nov 2011
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Her is one if you want to try and build one at low cost. http://www.mdpub.com/Wind_Turbine/

A link to the equipment needed for the whole system.
http://www.mdpub.com/Wind_Turbine/

I am looking into building my own starting with building my own motor/generator, so I have a few links to some different items of interest.
Ken
Racingken
 
MrDelanco

Senior Member

Joined: 12/11/2011
Location: United States
Posts: 101
Posted: 05:42pm 25 Nov 2011
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Hello Ken;

When you say building your own, do you mean buying the units and just putting them together, or do you mean winding your own coils and making your own blades ?

You state "I am looking into building my own starting with building my own motor/generator," if this is so then check out the one I built.

Building an Alt-Generator

Regards Bob.
MrDelanco:Project Videos
It is not only too know what it does but to understand how it does what it does.
 
Racingken

Newbie

Joined: 24/11/2011
Location: United States
Posts: 28
Posted: 05:46pm 25 Nov 2011
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I mean winding my own coils, and choosing the right size pm style magnets. and thanks for the interest as I will probably have a few questions down the line.

I will go check out yours right now!
Thanks again, Ken
Racingken
 
Racingken

Newbie

Joined: 24/11/2011
Location: United States
Posts: 28
Posted: 06:07pm 25 Nov 2011
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It looks like a great system you put together there! I see that it has plenty of power too. Correct me if I am wrong, (as I am still learning this part) but yours is a single phase unit, correct?

Ken
I see by the design of it that you are going to add another rotor. Will that be like adding a phase to it? Before you mention it I have seen what a 3 phase single rotor design should look like. I am just not sure about whether or not it would be considerd another phase when adding more rotors.Edited by Racingken 2011-11-27
Racingken
 
MrDelanco

Senior Member

Joined: 12/11/2011
Location: United States
Posts: 101
Posted: 10:28pm 25 Nov 2011
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  Racingken said   It looks like a great system you put together there! I see that it has plenty of power too. Correct me if I am wrong, (as I am still learning this part) but yours is a single phase unit, correct?

Ken


No Ken it is two(2) phase I have no need here for three(3) phase so I wired it for two(2) phase. I can change it at anytime as I brought the connections of the coil's outside of the unit.


MrDelanco:Project Videos
It is not only too know what it does but to understand how it does what it does.
 
Marcus20VT
Regular Member

Joined: 02/09/2008
Location: Wales
Posts: 49
Posted: 06:34pm 26 Nov 2011
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Hi Mickus - if you are just going to run a few LED's, you will be better buying a PV panel: Easier to install, easier to maintain and a more consistent voltage.
 
Racingken

Newbie

Joined: 24/11/2011
Location: United States
Posts: 28
Posted: 02:54pm 27 Nov 2011
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MrDelanco
I thank you for your reply.

No Ken it is two(2) phase I have no need here for three(3) phase so I wired it for two(2) phase. I can change it at anytime as I brought the connections of the coil's outside of the unit.

I guess what I should have said was it was single phase with just the one rotor in it. So you wired each rotor as a single phase then.

Is there an advantage to using 3 phase, Like in low wind applications?

Ken
Racingken
 
MrDelanco

Senior Member

Joined: 12/11/2011
Location: United States
Posts: 101
Posted: 02:14am 28 Nov 2011
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  Racingken said   MrDelanco
I thank you for your reply.

No Ken it is two(2) phase I have no need here for three(3) phase so I wired it for two(2) phase. I can change it at anytime as I brought the connections of the coil's outside of the unit.

I guess what I should have said was it was single phase with just the one rotor in it. So you wired each rotor as a single phase then.

Is there an advantage to using 3 phase, Like in low wind applications?

Ken


Domestic or house current in the USA is single phase line to neutral 120 volt's 60 Hz.
220 volt's comes from two(2) single phase line's to neutral are referenced as two phase's.

Two(2) phase is used with unit's requiring 220 volt's to operate, there are many unit's out there that require 220 volt's in the USA.

3 phase can be somewhat confusing, 3 phase is when each phase is 120 degrees out of phase to the others. This also helps to reduce inductive line losses in AC.

I built my alt-generator as a three(3) phase unit but have it operating as two(2) single phase units because of the sub-systems I have built and installed. I have found no advantage with my system design by running three(3) phase in low winds.

The rotor holds the magnets, the stator holds the coil assembly.

A 3 phase stator will have 9 coils. Each phase will consist of 3 coils in series and be wired as star or delta for the connection between the phases.
Three(3) Phase Basic's

Regards MrDelanco.


Edited by MrDelanco 2011-11-29
MrDelanco:Project Videos
It is not only too know what it does but to understand how it does what it does.
 
Racingken

Newbie

Joined: 24/11/2011
Location: United States
Posts: 28
Posted: 02:24am 28 Nov 2011
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Thank you for pointing me in the right direction on the phases. I guess I will be building a single phase stator then.
another question..... Do you get more output with the two stators, or is it just for 220v?
Racingken
 
MrDelanco

Senior Member

Joined: 12/11/2011
Location: United States
Posts: 101
Posted: 05:09am 29 Nov 2011
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  Racingken said   Thank you for pointing me in the right direction on the phases. I guess I will be building a single phase stator then.
another question..... Do you get more output with the two stators, or is it just for 220v?


Here's a link to get your feet wet about some small kits.Generator Kits

MrDelanco:Project Videos
It is not only too know what it does but to understand how it does what it does.
 
viatu3
Newbie

Joined: 29/11/2011
Location: United States
Posts: 5
Posted: 09:31am 29 Nov 2011
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I would suggest to stay away of ebay. I think you can find better offers.
Also the posting about the 3 phases is very interesting, thank you for sharing the link. I will read through it. I didn't know how much a single house needs.
The small Generator Kits look also useful to me :)
 
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