wind power

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wind power

Postby dinko » Thu Jan 31, 2013 10:34 am

Hi, I'm new to the forum.
I need a little help about wind power.
How to get a lot of power with less speed propeller?
I'm Croatian and I apologize for the grammatical errors.
Thanks.
dinko
 
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Re: wind power

Postby BillBushnell » Fri Feb 01, 2013 3:51 pm

Hi Dinko,

Your English is better than mine :D

To achieve more power with less propeller speed you just need a propeller with more surface area.

The Dutch built many of these over 200 years ago.

http://en.wikipedia.org/wiki/Windmills

For more info on the general engineering rules governing wind mill design and efficiency see that following

http://www.thebackshed.com/windmill/art ... Brown1.asp
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Re: wind power

Postby dinko » Sun Feb 03, 2013 10:26 am

Thank you very much for your reply.
But I've asked the wrong question.
I wanted to ask how to get more amperage with less speed, the number of windings of wire should be used and what type of wire?
dinko
 
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Re: wind power

Postby BillBushnell » Sun Feb 03, 2013 2:48 pm

Hi Dinko,

Thanks for clarifying your question. The attached link gives step by step instructions for building a homemade generator for a windmill.

http://www.mikeswindmillshop.com/howtow ... rator.html

As indicated you need to use a copper magnet wire. Note the wire appears to be bare copper wire but actually it has a nonconductive coating. The article tells you how to wind the stator to achieve various output voltages.

When the generator is connected to a load (for example a light bulb or heating element) the current will flow in accordance with Ohm's law

Voltage = Resistance x Amperage.

In this case the resistance is the internal resistance of the generator plus the resistance of the load. So to answer your question (how to get more amperage with less speed) you can increase the amperage through the load by increasing the output voltage of the generator. You increase the output voltage of the generator by increasing the number of windings.

http://www.whitbyhydro.on.ca/pdf/5.2.C_GenBasics.pdf
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Re: wind power

Postby dinko » Sun Feb 03, 2013 4:38 pm

Thank you very much for your answers. Really appreciate it.
dinko
 
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