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Re: Magnets

... leftovers from previous jobs and the rest is tubing and pipes for the frame and stand. This is just a toy to show people that we are blessed with WIND AND WIND IS POWER TO BE HARNESSED. FOR FREE. I use ferrites, 75 x 50 x 25 (24 per alternator) on the serious jobs, and having imported many of ...
by windwize1
on Sun Feb 01, 2015 12:20 am
 
Forum: General
Topic: Magnets
Replies: 15
Views: 14987

Re: Why wind power is better than solar panels

The advantage of generating power is that it can be generated in one place, and used in another, unlike the windpomp.
by amber14
on Fri Jan 30, 2015 7:06 am
 
Forum: General
Topic: Why wind power is better than solar panels
Replies: 7
Views: 8384

Re: magnet shape

Usually arc or wedge are widely used in wind turbine. Block magnets can work out well too as all these magnets need to be assemble together to products the magnetic field.
by jameswang
on Fri Jan 09, 2015 1:58 am
 
Forum: Rotors and magnets
Topic: magnet shape
Replies: 3
Views: 3523

Re: where to get magnets in gauteng!

Gentleman, may I comment on a general observation please: I notice that most guys wanting to work with wind turbines are clamoring for rare earth / neodymium magnets, mainly because they not only shine nicely, they are extremely strong (lets face it). Are all aware that they ...
by windwize1
on Sun Jan 04, 2015 8:54 pm
 
Forum: Rotors and magnets
Topic: where to get magnets in gauteng!
Replies: 2
Views: 1146

Northern Power aims its 60 kW turbine

... at distributed power applications November 18, 2014 Paul Dvorak The next generation of the company’s permanent magnet, direct drive distributed wind turbines is now available. At 60 kilowatts of rated power, with a 24-meter rotor, the recently launched NPS 60-24 can produce substantial amounts ...
by DoctorEvil
on Mon Dec 01, 2014 12:59 pm
 
Forum: Rotors and magnets
Topic: Northern Power aims its 60 kW turbine
Replies: 0
Views: 1008

Re: Low Cost! 500w to 1500W Wind Turbines in PAKISTAN

In view of the electricity shortage and load shedding / frequent power outages in PAKISTAN a group of investors have decided to
setup Low Cost 500W to 1500W Wind Turbines (PMG) manufacturing facility for the homeowners throughout PAKISTAN (starting from Karachi -Sindh).
by joni93
on Wed Nov 12, 2014 9:14 pm
 
Forum: General
Topic: Low Cost! 500w to 1500W Wind Turbines in PAKISTAN
Replies: 2
Views: 4198

Re: Hello everyone

... very long way to go. You can choose to help save the environment no matter where you live, because no matter where you are the sun shines and the wind blows.
by namal
on Mon Oct 27, 2014 6:28 am
 
Forum: General
Topic: Hello everyone
Replies: 4
Views: 4207

Re: Darling Wind Power

That is high. I wonder how well it would work in reverse? My guess it would offer a lot of resistance, and there may be a lot of static friction - i.e. it would need a lot of torque to start it spinning. A worm gear will not work in reverse at all!
by Arslan01
on Thu Oct 23, 2014 7:34 am
 
Forum: General
Topic: Darling Wind Power
Replies: 3
Views: 3959

Re: Micro wind turbines for rural homes in Africa

What voltage do you intend to get from the generator? How far apart will the magnets be? You are using very small magnets and very few coil winds, which means you will need to get a high RPM to get a reasonable voltage.Normally that means shorter blades, otherwise the tip speed gets too high. I thin...
by syed20
on Tue Oct 21, 2014 1:38 pm
 
Forum: General
Topic: Micro wind turbines for rural homes in Africa
Replies: 3
Views: 5114

Re: new start

... postings, and your name comes up all over. Are you the main guy on this forum? I would greatly appreciate any info you can give me on a suitable wind turbine. I live in Kimberley, and I have already installed a 2400w solar array, complete with Outback Charge controller, 2 x 3kw Inverters, a 660AH ...
by Xandra
on Thu Oct 16, 2014 9:35 am
 
Forum: General
Topic: new start
Replies: 2
Views: 4076

Re: Why wind power is better than solar panels

Hi Jay, looks great! You can't use capacitors alone to increase voltage. You can make a circuit using a coil, a FET, and capacitor, which is called a DC boost converter. Or you can try increase the rpm to get more voltage. Once you get 13.5 voltage you are good to charge a 12V battery.
by anamta
on Fri Oct 03, 2014 10:27 pm
 
Forum: General
Topic: Why wind power is better than solar panels
Replies: 7
Views: 8384

Re: Wind Power

Hi,

You must consult with a company that renders power plant management services. They will guide you rightly.



------------------------------
http://www.sterling-energy.com/services/
by kristahiles111
on Thu Aug 21, 2014 11:10 am
 
Forum: General
Topic: Wind Power
Replies: 22
Views: 14911

Re: Spring loaded varriable pitch hub

... turbines, like the large turbines attached to an AC grid. For a standalone turbine feeding into a DC system, the rotation speed can vary with wind speed. Another option is electronic - a variable DC-DC convertor driven by a microprocessor which optimises the DC voltage, and thereby the rotation ...
by windgat
on Sun Mar 16, 2014 9:58 am
 
Forum: Blades and Hub
Topic: Spring loaded varriable pitch hub
Replies: 11
Views: 8546

Re: Batteries

... stood for a long time so I'm sure I'm not going to get any voltage out of them, as for the de-sulfator there are plans in The Poor man's guide to wind mills maybe I could try build that and try it out on these batteries.Have you seen that or heard of any results from that De-Sulfator he talks ...
by chocolate7
on Tue Jan 28, 2014 8:40 am
 
Forum: Electrics and controls
Topic: Batteries
Replies: 14
Views: 11015

Re: Why wind power is better than solar panels

JTECH wrote:Yes and they don't rely on the sun to shine, so they work at night too provided the wind blows! Also, more power for your money compared to solar (PV).

Even I have got wind farm and I prefer wind energy over soolar.. It is easy to maintain and more efficient.
by MiguelCooper
on Tue Jan 14, 2014 11:26 am
 
Forum: General
Topic: Why wind power is better than solar panels
Replies: 7
Views: 8384

Re: The price of learning by experience

Great going man,.., Even I do have plans of insatlling solar and wind farms very soon.. I think it is the best way in contributing towards saving nature.
by AlfredKlein
on Tue Nov 19, 2013 8:13 am
 
Forum: General
Topic: The price of learning by experience
Replies: 42
Views: 35504

Re: The price of learning by experience

... 2009 and again in 2010. That shouldn't have kept we away from this site but my first turbine also got blown out of the sky. I sort of gave up on wind energy. My solar geyser and PV panels have been eminently successful. I hate failure and I hate to give up. The broken turbine lying in my garage ...
by turning green
on Sat Sep 21, 2013 1:08 pm
 
Forum: General
Topic: The price of learning by experience
Replies: 42
Views: 35504

Re: Different Stator needed??

... know how hot the stator gets - I have never monitored it. Of course, there is a neat factor in that the hotter the stator gets, the harder the wind must be blowing, which means the stator is naturally cooled if it is exposed to the wind. Some like Greystoke on this forum will be the oen you ...
by siamon
on Tue Aug 13, 2013 2:28 pm
 
Forum: Stators and coils
Topic: Different Stator needed??
Replies: 2
Views: 2251

Re: New propeller design

... my product at all. Our turbine will produce 100% of its own capability at any given moment and yes, perhaps its only utilizing a percentage of the wind hitting the sweep area but as far as I'm concerned that's not important. Much like a claim that one only receives 59% of gifts on Christmas morning. ...
by OooWeh
on Sun Jul 28, 2013 9:11 am
 
Forum: General
Topic: New propeller design
Replies: 3
Views: 3621

Need some advise please

I built a wind turbine a couple of years ago but the voltage produce was only 11 volts so never did anything with it. tried with only 2 blades and got the rpm up but my furling was not good so the blades ripped off, now I'm thinking ...
by Jay
on Tue Apr 23, 2013 8:55 am
 
Forum: General
Topic: Need some advise please
Replies: 3
Views: 3630

Re: Water cooling a stator for more efficiency

... know how hot the stator gets - I have never monitored it. Of course, there is a neat factor in that the hotter the stator gets, the harder the wind must be blowing, which means the stator is naturally cooled if it is exposed to the wind. Some like Greystoke on this forum will be the oen you ...
by windgat
on Wed Apr 17, 2013 2:48 pm
 
Forum: Stators and coils
Topic: Water cooling a stator for more efficiency
Replies: 1
Views: 1777

Water cooling a stator for more efficiency

... curiosity and because I'm often accused of being completely mad, what would be the best way to create a stator that would burn up in any strong wind, ie. if I used really thin winding wire, would that do it. Hope this provokes some thought, I've seen water cooling on industrial stators but not ...
by EmeraldIsle
on Mon Apr 15, 2013 1:27 pm
 
Forum: Stators and coils
Topic: Water cooling a stator for more efficiency
Replies: 1
Views: 1777

Re: New propeller design

... to our current understanding of Physics (c.f. Betz), the maximum power that it is possible to get from that area, at an arbitrary 10m/s (a strong wind!), is about (at sea level, so you would get a bit less up there) 0.35 * 1.33 * 1000 = 464.6W This is at an impossible 100% efficiency. At 7.2km/h, ...
by windgat
on Fri Jan 25, 2013 11:39 am
 
Forum: General
Topic: New propeller design
Replies: 3
Views: 3621

New propeller design

Hi Everyone. I have casually browsed through these pages and am impressed with the knowledge they offer. I live in Johannesburg where the wind leaves a lot to be desired. As a handyman and kinetic art hobbyist, I stumbled across an idea for a new propeller design that takes full advantage of ...
by OooWeh
on Sat Jan 19, 2013 1:56 pm
 
Forum: General
Topic: New propeller design
Replies: 3
Views: 3621

Re: SUPPLIERS WIND POWER GENERATOR

... very long way to go. You can choose to help save the environment no matter where you live, because no matter where you are the sun shines and the wind blows.
by sullie
on Mon Jul 18, 2011 12:45 am
 
Forum: General
Topic: SUPPLIERS WIND POWER GENERATOR
Replies: 4
Views: 6082
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