The Wind is Free!

Hi there. It can be daunting! It is a big subject, and there are many aspects, as you have seen. Wind speed is best measured at the actual site, but approximations can be got from nearby airports, flying clubs (e.g. paragliders) or weather stations. As for the other questions ...

... like to build your design but I am unsure about: Magnets? how do you decide what to use? Coils? How do you decide? How do I find out our wind speed? How many rpm's will this wind speed achieve? How much volts,amps, watts will this generate? Thank you in advance...

http://www.sabels.com/WIND_POWER.htm
I found this company for magnets.

... in one section. Is it worth rescuing this baby and will it be easy to repair as the coils are covered in a resin or something? Maybe for a biggish wind turbine. Now somebody please give me short answer, Would you have bought it for the price of scrap metal, R5,40 per kg?

To be on the safe side, I am going to install a "stop end" on the swivel mount to limit rotation to about 355 degrees.
The catch will be to figure out the best placement of the stop end in relation to the most active wind directions for my area.

Hello Windgat, I am building a battery charging circuit that uses an input similar to wind - unpredictable and having a wide window of voltages and I need help to build a charge controller for the same. I find your circuit is a good starting point. However, I need ...

After I experiment with this I will be building a horizontal axis wind turbine may 5' or 10' it depends on the 15' tower I will make first. If the stator that I am making for the vawt does not work well (wich I think it won't) I will use it on the hawt. Still ...

The 300Watt with the 2m blades is based on the 3rd power average. The 50 Watt with the 1m blades is a mistake and should have been 70Watt.

A normal fridge compressor operates @

Yes, at that low wind speed there is not much power available. But remember, at double that speed, there is EIGHT times more power. Calculations based on average speed are only valid for a linear power-speed relationship. For a wind ...

JTECH wrote: Also, more power for your money compared to solar (PV).

Now THAT remains to be seen !

I've given up of trying to get sustained power out of the wind. It can't be done, unless you go really BIG. At an average windspeed of 3.5m/s (=average in PE) a one meter blade will get you

Looks good.
Do you have any idea of windspeed vs RPM? That would allow a 'cut in' wind speed to be calculated.

Marcel, you still here? Did you connect with Reinhard Otto? Basically I am looking for a low rpm PM DC motor to charge deep cycle 12V batteries, do have something or can you guide me?

Thanks

harry

Do you think that this wind turbine will be good because of it's size?

Hi Windgat Just a question on coil shape, I have built a vertical wind generator, 9 coils with just one 12 magnetic plate. On design, I did not worry about the inner dimmension of the coil. I used 40mm top and 20mm bottom for the inside of the coils. Why ...

I was hoping that somebody has changed the squirrel cage rotor with a permanent magnet rotor. Something like milling the rotor down to fit magnets onto the rotor. I came across this site on the internet:(http://www.otherpower.com/otherpower_wind_alternators.html). Perhaps it will help. (see:Inducti...

... the input. Since I understand very little about electricity my following question might sound strange to you. Hypothetically speaking, I have two windturbines and they are identical as far as all the components, number of coils and magnets are concerned, except for the one`s coils consists of ...

... Is there a complete guide of what should be taken in mind when trying to calculate the whole constraction? I mean what should I start from? The wind in my area, the voltage, the watts I want? Sorry man, I'm a bit confused. P.S. If possible, please make a list with the terminology we use here ...

... huge dam wall next to the house. I have a few single and 3phase squirrel cage electric motors lying on the farm. Want to convert then to vertical wind generators. At the moment my renewable energy is as follows: 24 x 600AH lead acid batteries 2kw of solar cells 6 KVA 48Volt inverter Anybody has ...

hello to all, am designing a turbine blade using xfoil. i have done all the necessary calculation including the average wind speed of the site i selected and the airfoil analysis for the aifoils i am using now. am using the mh airfoil. they are mh102, mh104, mh106, mh10, mh110. am ...

... as the turbine doesn't get into a 'spin' around the vertical axis. This will only happen if the vane is far too short or light - otherwise the wind tends to veer (change in a clockwise direction) and back (counterclockwise), which means on average there is not (or very little) twist in the ...

Hi Windgat,

Just need some info,
I have a 24 volt wind turbine what i would like to know is can i charge a single 12 volt 200ah battrey from it.

Thanx,

Rod.

... solutions for preventing damage to the cable, running down the pole from the stator , as the turbine turns on its swivel mounting due to change in wind direction. Thanx

[quote="windgat The longer the blades, the less RPM the wind will give you... this also depends on TSR (tip speed ratio). I was under the impression that one would get more RPM than with shorter blades :?: :? With a 30km/h ...

hi windgat rod here,i have a 10foot wind turbine 24 volt system .i have the compleat system up and charging.what i need is the dump controll unit, can you build me a unit and what will be the cost.the units from the suppliers ...

I set off building a 12v wind turbine. This is my first project.

I started building the mould of a stator using Hugh Piggott