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Re: Magnets

... on a single shaft to make a cute (but not very efficient) savonius rotor; the hub is a water pump from a vehicle; the two steel plates for the alternator are two square 3,2 mm pieces (they need not be round, only balanced); the enamel wire is .8 mm leftovers from previous jobs and the rest ...
by windwize1
on Sun Feb 01, 2015 12:20 am
 
Forum: General
Topic: Magnets
Replies: 15
Views: 13742

Re: Using car alternator

Can u not use a Car alternater to generate the power.
by aahanifnoor
on Fri Jan 23, 2015 6:57 am
 
Forum: General
Topic: Using car alternator
Replies: 2
Views: 3179

Re: alternator power

how can we use solar panel in town or village if we have lack of recourse....now days we are use water as a power in our town.



___________________________

basit
by basit
on Tue Nov 11, 2014 8:22 am
 
Forum: Electrics and controls
Topic: alternator power
Replies: 7
Views: 6181

Re: Using a Car alternator.

Hi DIYman. First step is to check what rpm is needed to get the voltage you want. Say you want to run a 12V system, then it means you need 14V from the alternator. So spin it until it gets 14V, and measure the rpm. How to do this depends on your instruments and ingenuity!
by Chikky123
on Thu Oct 30, 2014 3:00 pm
 
Forum: General
Topic: Using a Car alternator.
Replies: 1
Views: 3807

Re: New propeller design

... will be 100% of the gifts I will get regardless of the gifts I may have gotten if some scientist hadn't made the claim in the first place. Our alternator was designed resembling a cannery cage and the magnetic hub turns inside the stator. The stator turns in the opposite direction to the hub ...
by OooWeh
on Sun Jul 28, 2013 9:11 am
 
Forum: General
Topic: New propeller design
Replies: 3
Views: 3016

Re: Need some advise please

... you get 13.5 voltage you are good to charge a 12V battery. What generator are you using? Your problem is typically of projects which use a car alternator or other high rpm motor as a generator. To make it turn downwind, try reversing the blades, and removing the tail - that alone might do it.
by windgat
on Wed May 15, 2013 7:00 pm
 
Forum: General
Topic: Need some advise please
Replies: 3
Views: 3024

Re: Farm windmill

Yes it can. If you use an alternator, then a gearing system is needed to turn the very low rpm of the blades into a fast enough RPM to generate the required voltage. Or you can build a low RPM generator, as described on the main site, and connect it via a belt or gear system.
by windgat
on Sat Jun 11, 2011 8:53 am
 
Forum: General
Topic: Farm windmill
Replies: 8
Views: 5432

Re: Simply the Motor part

... would need to have your turbine on a pulley assembly making it bigger and bulkier, and the will be a lot friction making it less efficient. The alternator... This one caught me by surprise. The average cheapy you can pick up for around R250, But that will only be around a 50AMP @ 14 volts which ...
by chadley
on Wed Oct 20, 2010 11:19 am
 
Forum: Stators and coils
Topic: Simply the Motor part
Replies: 3
Views: 2850

Re: Farm windmill

... in 1 or more stages that will up the speed. To do this in 1 stage 1 might need a weel or gear of about 1500mm in radius on the windmill. On the alternator side you then needs a weel or gear of about 75mm radius. If I remember correctly from school maths the formula for the surcumfere of a circle ...
by bellboyrsa
on Sun Apr 11, 2010 9:54 pm
 
Forum: General
Topic: Farm windmill
Replies: 8
Views: 5432

Re: Farm windmill

I have also heard of people who have added a belt drive at the top of the tower, and bolted on a car alternator. It needs to be geared up a lot, as the alternator needs to turn fast to generate enough voltage.
by windgat
on Thu Apr 08, 2010 11:31 pm
 
Forum: General
Topic: Farm windmill
Replies: 8
Views: 5432

Re: Wind generator plans link and question

... is it to get the blades to be identical (or close)? Its a complex 3d shape... how do you check its accurate? I have seen web pages about modifying alternators, but haven't paid much attention because I make my own generators. Googling 'alternator conversion permanent magnet' should give you lots ...
by windgat
on Sun Jan 17, 2010 10:14 am
 
Forum: Blades and Hub
Topic: Wind generator plans link and question
Replies: 1
Views: 2270

Wind generator plans link and question

... file) in the upper right is the best blade I have ever used! The link is here- http://www.tongacharter.com/report-wind.htm My question is the alternator to generator system is listed as experimental. Anybody have a good design for making the change? Scott
by yachtwork
on Sun Jan 17, 2010 3:05 am
 
Forum: Blades and Hub
Topic: Wind generator plans link and question
Replies: 1
Views: 2270

Re: Pretoria Area

Hi Drake. Nice stuff to get for free!

Neither option you mention is ideal. Search this forum for 'alternator' to see discussions around that.
by windgat
on Sat Dec 12, 2009 10:58 am
 
Forum: General
Topic: Pretoria Area
Replies: 8
Views: 7404

Re: Pretoria Area

... the solar cells are a bit out of my student budget. my starting question would be; which would be the best option for a generator a cars fan or an alternator?
by DRAKE
on Wed Dec 09, 2009 11:14 am
 
Forum: General
Topic: Pretoria Area
Replies: 8
Views: 7404

market for wind generators

Hi All, I am new to this forum. My name is Marcel and I designed and build alternators in the past. My alternators were used mainly for mining vehicles. Both my stators and rotors were laminated steel, and used an electromagnetic coil. I also designed and build ...
by marcel
on Mon Nov 02, 2009 10:37 am
 
Forum: Stators and coils
Topic: market for wind generators
Replies: 3
Views: 3049

Re: alternator power

hi...
you want to convert a alternator into windmill ? sure u r thinking right but ther are some problem due to high rpm,you can solve this matter,contact me via mail
but the idea is not free you have to pay.if you intersted contact me my Email-ashakily@gmail.com
prb
by prakash
on Wed Oct 28, 2009 1:27 pm
 
Forum: Electrics and controls
Topic: alternator power
Replies: 7
Views: 6181

AC or DC Motor as Generator

... this AC directly into your DB board unless you buy a very expensive inverter which can range from R3000 up to R15000 and more Fact AC Using a car alternator you can produce a pure sinewave which theoreticaly can be injected directly into your DB board however the rpm's required to use an alternator ...
by mobile
on Mon Oct 12, 2009 9:58 am
 
Forum: Stators and coils
Topic: AC or DC Motor as Generator
Replies: 10
Views: 8871

Re: PVC blades

... become even more brittle. ABS fairs much better in all weather conditions. Anyway I am also building a 4 pole 12 coil radial flux air core 3 phase alternator out of the same pipe. The main goal is to generate 100w in 10mph-ish wind using ABS as the main material for the Stator and blades. The diameter ...
by ironman87
on Sun Sep 13, 2009 9:22 am
 
Forum: Blades and Hub
Topic: PVC blades
Replies: 13
Views: 9536

Re: Using car alternator

Hi there Robert. Please see the post below. Its called 'Using a car alternator' in the General section.

http://windpower.org.za/forum/viewtopic.php?f=6&t=153
by windgat
on Tue Sep 01, 2009 11:53 pm
 
Forum: General
Topic: Using car alternator
Replies: 2
Views: 3179

Using car alternator

I like the Idea of using wind terbin to generate power. Can u not use a Car alternater to generate the power.

Thanks

Robert
by RobertG
on Tue Sep 01, 2009 2:16 pm
 
Forum: General
Topic: Using car alternator
Replies: 2
Views: 3179

Re: alternator power

Alternator use in a wind system has a view issues, high rpm needed. The freq changes as the speed does. Don't use the ac side as you will cry later. The tests that was done using altenators has resulted as follows, you have ...
by basiedp
on Wed Aug 05, 2009 7:16 pm
 
Forum: Electrics and controls
Topic: alternator power
Replies: 7
Views: 6181

Re: Getting discount on magnets

There seems to be a problem getting magnets, so why not use a car alternator with a large pulley on the blades side to a small pulley on the alternator, this should increase the speed of the alternator,has anyone tried it??
by KenFoyn
on Wed Jul 01, 2009 12:18 pm
 
Forum: Rotors and magnets
Topic: Getting discount on magnets
Replies: 41
Views: 28367

Re: alternator power

40Ah in 24 hours = about 2amps continuous, which is about 25 watts Lets take a 1m radius blade, and work with max possible power. 10km/h = 2.7m/s max power 21Watts 15km/h = 4.2ms max power 82 Watts So wind speed is critical. Since you will lose power by gearing up with a pulley (or a chain or a gear...
by windgat
on Mon Jun 22, 2009 12:10 am
 
Forum: Electrics and controls
Topic: alternator power
Replies: 7
Views: 6181

Re: alternator power

Hi guys, I am also interested in using a car alternator as a wind generator, as I don't have spare time to make a gen myself. However, I have no idea how to make the blades and how big. Can anyone help? It is for a friend who runs a few lights ...
by Fritz
on Sun Jun 21, 2009 10:21 pm
 
Forum: Electrics and controls
Topic: alternator power
Replies: 7
Views: 6181

Re: How much power does a wind generator produce?

... - I can't justify the expense of R5000 - R6000 on magnets alone. It's just not on, and I'm now investigating the use of a standard mains voltage alternator. The one I'm looking at is about R3000 for 2.4kVA (@ 3000rpm :shock: ).
by Greystoke
on Wed Jun 10, 2009 12:39 pm
 
Forum: General
Topic: How much power does a wind generator produce?
Replies: 85
Views: 53210
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