Windmill Generator Blade Design

To understand how your windmill generator will create electricity we need to get a handle on how it works.  We don’t need high wind speed if the wind generator is efficient, in fact too much wind can be more of a problem than a help!

What we need to understand is that as the wind speed doubles, it will create 8 Times the power at the wind generator.  If the wind speed is tripled, you will get 27 times more output on the windmill generator!

Realistically, a wind speed of around 5 mph (miles per hour) is fine.  Couple this with an efficient windmill generator with suitable blade length and you will get a lot of power.  Something to understand for calculating, is that the longer the turbine blades – the more power output (you had probably guessed that factor!)  By doubling the length of the blades on your wind generator, the power output increase four times!  So it’s nice to build blades to a decent length to help the output.

Whatever style of motor you use to generate electricity, it will need some minor maintenance from time to time, so consider the fact that you will need to get to it again the future.  If you have space for an 8 foot blade on your wind generator, that’s great, but remember you will need to set this very high indeed and this will put your motor along way away for any maintenance (such as changes brushes or bearings).

OK enough of the technical (honestly, you don’t need to be a genius for some good returns), all you really need is a good plan to work to and ideally a proven design.  Then making a sensible windmill generator is easy.