Forum Discussion
westend
Oct 11, 2014Explorer
I have one, a DC setup, though.
That "Wind Blue" is like most commercial offerings, highly over rated for real world use. You should note that shaft speed needs to be over 130 RPM to harvest even a small bit of amps. Attaining that 130 RPM in low wind conditions is hardly attainable, you will need a very light propset but large enough to overcome the starting drag of the alternator.
If you do start with small wind power, it will become evident, early on, that harvesting power from the wind ain't easy. For a permanent household situation with a three-phase generator, typical prop diameters are around 10'. I've tried to get around the larger logistical considerations by using permanent magnet DC generators and a 7', fairly well designed aluminum three blade prop set. I am continually experimenting with different motors to achieve the best balance between wind speed and harvest totals. I'm happy with the 7' props, they are noiseless and are an elegant solution for small wind sizing.
Good luck with your wind power!
That "Wind Blue" is like most commercial offerings, highly over rated for real world use. You should note that shaft speed needs to be over 130 RPM to harvest even a small bit of amps. Attaining that 130 RPM in low wind conditions is hardly attainable, you will need a very light propset but large enough to overcome the starting drag of the alternator.
If you do start with small wind power, it will become evident, early on, that harvesting power from the wind ain't easy. For a permanent household situation with a three-phase generator, typical prop diameters are around 10'. I've tried to get around the larger logistical considerations by using permanent magnet DC generators and a 7', fairly well designed aluminum three blade prop set. I am continually experimenting with different motors to achieve the best balance between wind speed and harvest totals. I'm happy with the 7' props, they are noiseless and are an elegant solution for small wind sizing.
Good luck with your wind power!
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