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Registered Member #190
Joined: Fri Feb 17 2006, 12:00AM
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Posts: 1567
Sulaiman wrote ...
Just a few thoughts;
If you do not furl the blades then the tower has to be very strong. If you build a strong tower wouldn't larger blades with furling be more cost-effective?
It's all about time and money. A stronger tower is more expensive to build. It is more expensive to lift. Larger blades do mean more power, but one then needs to build a bigger alternator. This means more steel, more magnets, and more wire. Again, this is added cost. Finally, more power requires a larger inverter, or else the power is lost as the winds pick up.
If I could, I would build a 100' tower with a 20-25' diameter rotor. Now that would be impressive to see.8-)
This is the wind turbine for which I made the shunt controller:
This is my first tower raising. I tested the winch brake by releasing it. It starts to fall before I engage the brake. If the brake didn't work I would have a lot of scrap metal! This tower is only 36' tall:
Here I am cutting the blade profile with a chainsaw. After this I have to sand it smooth with the proper contour:
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linear shunt failure
